One Laptop Per Child is a non-profit that produced the XO series of
eductional laptops for children.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Rob Herring <robh@kernel.org>
Document the new PMC binding with only one PMC node for all the PMC clocks
instead of one node per clock as this proved to be problematic.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add a restructured text file describing how to write drivers with support
for P2P DMA transactions. The document describes how to use the APIs that
were added in the previous few commits.
Also adds an index for the PCI documentation tree even though this is the
only PCI document that has been converted to restructured text at this
time.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Add a new directory in the driver API guide for PCI-specific documentation.
This is in preparation for adding a new PCI P2P DMA driver writers guide
which will go in this directory.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Sanyog Kale <sanyog.r.kale@intel.com>
Cc: Sagar Dharia <sdharia@codeaurora.org>
Add a sysfs group to display statistics about P2P memory that is registered
in each PCI device.
Attributes in the group display the total amount of P2P memory, the amount
available and whether it is published or not.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This is a per-VM capability which can be enabled by userspace so that
the faulting linear address will be included with the information
about a pending #PF in L2, and the "new DR6 bits" will be included
with the information about a pending #DB in L2. With this capability
enabled, the L1 hypervisor can now intercept #PF before CR2 is
modified. Under VMX, the L1 hypervisor can now intercept #DB before
DR6 and DR7 are modified.
When userspace has enabled KVM_CAP_EXCEPTION_PAYLOAD, it should
generally provide an appropriate payload when injecting a #PF or #DB
exception via KVM_SET_VCPU_EVENTS. However, to support restoring old
checkpoints, this payload is not required.
Note that bit 16 of the "new DR6 bits" is set to indicate that a debug
exception (#DB) or a breakpoint exception (#BP) occurred inside an RTM
region while advanced debugging of RTM transactional regions was
enabled. This is the reverse of DR6.RTM, which is cleared in this
scenario.
This capability also enables exception.pending in struct
kvm_vcpu_events, which allows userspace to distinguish between pending
and injected exceptions.
Reported-by: Jim Mattson <jmattson@google.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The per-VM capability KVM_CAP_EXCEPTION_PAYLOAD (to be introduced in a
later commit) adds the following fields to struct kvm_vcpu_events:
exception_has_payload, exception_payload, and exception.pending.
With this capability set, all of the details of vcpu->arch.exception,
including the payload for a pending exception, are reported to
userspace in response to KVM_GET_VCPU_EVENTS.
With this capability clear, the original ABI is preserved, and the
exception.injected field is set for either pending or injected
exceptions.
When userspace calls KVM_SET_VCPU_EVENTS with
KVM_CAP_EXCEPTION_PAYLOAD clear, exception.injected is no longer
translated to exception.pending. KVM_SET_VCPU_EVENTS can now only
establish a pending exception when KVM_CAP_EXCEPTION_PAYLOAD is set.
Reported-by: Jim Mattson <jmattson@google.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The DAC960 driver has been obsoleted by the myrb/myrs drivers,
so it can be dropped.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The internal codec on Allwinner A64 is split into 2 parts. The
analog path controls are routed through an embedded custom register
bus accessed through the PRCM block just as on A23/A33/H3.
Add a binding for this hardware.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The I2S block used for the audio codec in the A64 differs from other 3
I2S modules in A64 and isn't compatible with H3. But it is very similar
to what is found in A10(sun4i). However, its TX FIFO is
located at a different address.
Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add bindings to get device control module which has the device id and
vendor id to be configured in the keystone PCIe controller.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
To prevent dynamic completion objects from being de-allocated while still
in use, add a recommendation to embed them in long lived data structures.
Also add a note for the on-stack case that emphasizes the dangers of
the limited scope, and recommends dynamic allocation if scope limitations
are not clearly understood.
[ mingo: Minor touch-ups of the text, expanded it a bit to make the
warnings Nicholas added more prominent. ]
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: john.garry@huawei.com
Link: http://lkml.kernel.org/r/1539697539-24055-1-git-send-email-hofrat@osadl.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The header file indicates that there are 36 reserved bytes at the end
of this structure. Adjust the documentation to agree with the header
file.
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Coalesced pio is based on coalesced mmio and can be used for some port
like rtc port, pci-host config port and so on.
Specially in case of rtc as coalesced pio, some versions of windows guest
access rtc frequently because of rtc as system tick. guest access rtc like
this: write register index to 0x70, then write or read data from 0x71.
writing 0x70 port is just as index and do nothing else. So we can use
coalesced pio to handle this scene to reduce VM-EXIT time.
When starting and closing a virtual machine, it will access pci-host config
port frequently. So setting these port as coalesced pio can reduce startup
and shutdown time.
without my patch, get the vm-exit time of accessing rtc 0x70 and piix 0xcf8
using perf tools: (guest OS : windows 7 64bit)
IO Port Access Samples Samples% Time% Min Time Max Time Avg time
0x70:POUT 86 30.99% 74.59% 9us 29us 10.75us (+- 3.41%)
0xcf8:POUT 1119 2.60% 2.12% 2.79us 56.83us 3.41us (+- 2.23%)
with my patch
IO Port Access Samples Samples% Time% Min Time Max Time Avg time
0x70:POUT 106 32.02% 29.47% 0us 10us 1.57us (+- 7.38%)
0xcf8:POUT 1065 1.67% 0.28% 0.41us 65.44us 0.66us (+- 10.55%)
Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Using hypercall for sending IPIs is faster because this allows to specify
any number of vCPUs (even > 64 with sparse CPU set), the whole procedure
will take only one VMEXIT.
Current Hyper-V TLFS (v5.0b) claims that HvCallSendSyntheticClusterIpi
hypercall can't be 'fast' (passing parameters through registers) but
apparently this is not true, Windows always uses it as 'fast' so we need
to support that.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is better than letting the other developers wondering what are the
supported strings.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add the clocks supported in global clock controller which clock the
peripherals like BLSPs, SDCC, USB, MDSS etc. Register all the clocks
to the clock framework for the clients to be able to request for them.
Signed-off-by: Shefali Jain <shefjain@codeaurora.org>
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Co-developed-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Anu Ramanathan <anur@codeaurora.org>
[bamse, vkoul: rebase and tidyup for upstream]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
[sboyd@kernel.org: Lowercase hex]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the global clock controller found on SDM660
based devices. This should allow most non-multimedia device
drivers to probe and control their clocks.
Based on CAF implementation.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
[craig: rename parents to fit upstream, and other cleanups]
Signed-off-by: Craig Tatlor <ctatlor97@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
[sboyd@kernel.org: Rename gcc_660 to gcc_sdm660 and fix numbering of
defines to avoid duplicates]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Note that, it requires "f2fs: return correct errno in f2fs_gc".
This adds a lightweight non-persistent snapshotting scheme to f2fs.
To use, mount with the option checkpoint=disable, and to return to
normal operation, remount with checkpoint=enable. If the filesystem
is shut down before remounting with checkpoint=enable, it will revert
back to its apparent state when it was first mounted with
checkpoint=disable. This is useful for situations where you wish to be
able to roll back the state of the disk in case of some critical
failure.
Signed-off-by: Daniel Rosenberg <drosen@google.com>
[Jaegeuk Kim: use SB_RDONLY instead of MS_RDONLY]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Add a new compatible string "ti,am654-ecap" to support PWM ECAP IP of
TI AM654 SoC.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This patch fixes a minor, incorrect piece of grammar in the UIO howto.
Signed-off-by: Will Korteland <will@korte.land>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Clarify the intention that interfaces and upper layers use
regions rather than managers directly.
Rearrange API documentation to better group the API functions
used to create FPGA mgr/bridge/regions and the API used for
programming FPGAs.
Signed-off-by: Alan Tull <atull@kernel.org>
Suggested-by: Federico Vaga <federico.vaga@cern.ch>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add devm_fpga_region_create() which is the
managed version of fpga_region_create().
Change current region drivers to use
devm_fpga_region_create().
Signed-off-by: Alan Tull <atull@kernel.org>
Suggested-by: Federico Vaga <federico.vaga@cern.ch>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add devm_fpga_bridge_create() which is the managed
version of fpga_bridge_create().
Change current bridge drivers to use
devm_fpga_bridge_create().
Signed-off-by: Alan Tull <atull@kernel.org>
Suggested-by: Federico Vaga <federico.vaga@cern.ch>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add devm_fpga_mgr_create() which is the managed
version of fpga_mgr_create().
Change current FPGA manager drivers to use
devm_fpga_mgr_create()
Signed-off-by: Alan Tull <atull@kernel.org>
Suggested-by: Federico Vaga <federico.vaga@cern.ch>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Updated documentation to explain base_frequency attribute.
Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Broadcom SoC pins are controlled using CRU ("Clock and Reset Unit" or
"Central Resource Unit") registers. There are more CRU registers and
functions so CRU should be represented as a separated block in DT.
Moreover CRU is a sub-block of DMU ("Device Management Unit") so that
one should also get its own node.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add support for the DEC FDDIcontroller 700 (DEFZA), Digital Equipment
Corporation's first-generation FDDI network interface adapter, made for
TURBOchannel and based on a discrete version of what eventually became
Motorola's widely used CAMEL chipset.
The CAMEL chipset is present for example in the DEC FDDIcontroller
TURBOchannel, EISA and PCI adapters (DEFTA/DEFEA/DEFPA) that we support
with the `defxx' driver, however the host bus interface logic and the
firmware API are different in the DEFZA and hence a separate driver is
required.
There isn't much to say about the driver except that it works, but there
is one peculiarity to mention. The adapter implements two Tx/Rx queue
pairs.
Of these one pair is the usual network Tx/Rx queue pair, in this case
used by the adapter to exchange frames with the ring, via the RMC (Ring
Memory Controller) chip. The Tx queue is handled directly by the RMC
chip and resides in onboard packet memory. The Rx queue is maintained
via DMA in host memory by adapter's firmware copying received data
stored by the RMC in onboard packet memory.
The other pair is used to communicate SMT frames with adapter's
firmware. Any SMT frame received from the RMC via the Rx queue must be
queued back by the driver to the SMT Rx queue for the firmware to
process. Similarly the firmware uses the SMT Tx queue to supply the
driver with SMT frames that must be queued back to the Tx queue for the
RMC to send to the ring.
This solution was chosen because the designers ran out of PCB space and
could not squeeze in more logic onto the board that would be required to
handle this SMT frame traffic without the need to involve the driver, as
with the later DEFTA/DEFEA/DEFPA adapters.
Finally the driver does some Frame Control byte decoding, so to avoid
magic numbers some macros are added to <linux/if_fddi.h>.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This documentation was inadvertently released under the CC-BY-SA-4.0
license. It was intended to be released under GPL-2.0 or later.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
The R7S9210 belongs to the RZ/A2 SoC series
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Rob Herring <robh@kernel.org>
Add USB PHY support for r8a7744 SoC. Renesas RZ/G1N (R8A7744)
USB PHY is identical to the R-Car Gen2 family.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Rob Herring <robh@kernel.org>
Document RZ/G1N (r8a7744) SoC specific bindings.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Rob Herring <robh@kernel.org>
Document SoC specific compatible strings for r8a7744. No driver change
is needed as the fallback strings will activate the right code.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
Add thermal sensor support for r8a7744 SoC. The Renesas RZ/G1N
(r8a7744) thermal sensor module is identical to the R-Car Gen2 family.
No driver change is needed due to the fallback compatible value
"renesas,rcar-gen2-thermal".
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
The RZ/G1C (a.k.a. R8A77470) comes with three SDHI interfaces,
SDHI0 and SDHI2 are compatible with R-Car Gen2 SDHIs, and
SDHI1 is compatible with R-Car Gen3 SDHIs, as it comes with an
internal DMAC, therefore SDHI1 is fully compatible with driver
renesas_sdhi_internal_dmac driver. As a result, the compatible
strings for the R8A77470 SDHI interfaces are a little bit special.
Document SDHI support for the RZ/G1C SoC.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add device tree binding documentation details of msa
memory region for ath10k qmi client for SDM845/APQ8098
SoC into "qcom,ath10k.txt".
Signed-off-by: Govind Singh <govinds@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Niklas Cassel <niklas.cassel@linaro.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This adds device tree binding documentation for the CPU watchdog found
on Armada 37xx SOCs (EspressoBin, Turris Mox).
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Add description of DT bindings for mpc8xxx-wdt driver which
handles the CPU watchdog timer on the mpc83xx, mpc86xx and mpc8xx.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Conflicts were easy to resolve using immediate context mostly,
except the cls_u32.c one where I simply too the entire HEAD
chunk.
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove "manual" table of contents and leave only the ReST tag so that
Sphinx will take care of TOC generation.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Some platforms may use a single device tree to describe two address
spaces, as described in d9f43babb9 ("Documentation: dt: Add bindings
for Secure-only devices"). For these platforms it makes sense to define
a secure counterpart of /chosen, namely: /secure-chosen. This new node
is meant to be used by the secure firmware to pass data to the secure
OS. Only the stdout-path property is supported for now.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
When converting from text to rst, the kobjects section and its sole
subsection about device tree nodes were coalesced into a single section,
yielding an inconsistent result.
Remove all references to kobjects, as
1. Device tree object pointers are not compatible to kobject pointers
(the former may embed the latter, though), and
2. there are no printk formats defined for kobject types.
Update the vsprintf() source code comments to match the above.
Fixes: b3ed23213e ("doc: convert printk-formats.txt to rst")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The existing wording implies that the use of spin_unlock whilst irqs are
disabled might trigger a reschedule. However the preemptible() test in
preempt_schedule will prevent a reschedule if irqs are disabled.
Lets improve the clarity of this wording to change the example from
spin_unlock to cond_resched() and cond_resched_lock() as these are
functions that will trigger a reschedule if the preempt count is 0 without
testing that irqs are disabled.
Also remove the 'Last Updated' line as this is not up to date and better
tracked via GIT.
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Commit ef548c551e ("dm flakey: introduce "error_writes" feature")
added the ability to dm flakey to error out writes in contrast to
silently dropping it with 'drop_writes'. Unfortunately this feature
is not currently documented and one has to be either familiar with the
source code of dm flakey or check out xfstests sources to know of
this parameter. So document it.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This patch fixes a couple of punctuation nits which can make the document
more correct and readable.
Also missing "()" are added to some function references for consistency.
Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Let's document the magic a bit, especially why device_hotplug_lock is
required when adding/removing memory and how it all play together with
requests to online/offline memory from user space.
[ rppt: moved the text to Documentation/core-api/memory-hotplug.rst ]
Link: http://lkml.kernel.org/r/20180925091457.28651-7-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Pavel Tatashin <pavel.tatashin@microsoft.com>
Reviewed-by: Rashmica Gupta <rashmica.g@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: John Allen <jallen@linux.vnet.ibm.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Mathieu Malaterre <malat@debian.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: YASUAKI ISHIMATSU <yasu.isimatu@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
to allow additions of new documentation about memory hotplug under the same
roof.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Add support for r8a7744. The Renesas RZ/G1N (R8A7744) PCIe controller
is identical to the R-Car Gen2 family.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Another difference between IPv4 and IPv6 is the generation of RTM_DELROUTE
notifications when a device is taken down (admin down) or deleted. IPv4
does not generate a message for routes evicted by the down or delete;
IPv6 does. A NOS at scale really needs to avoid these messages and have
IPv4 and IPv6 behave similarly, relying on userspace to handle link
notifications and evict the routes.
At this point existing user behavior needs to be preserved. Since
notifications are a global action (not per app) the only way to preserve
existing behavior and allow the messages to be skipped is to add a new
sysctl (net/ipv6/route/skip_notify_on_dev_down) which can be set to
disable the notificatioons.
IPv6 route code already supports the option to skip the message (it is
used for multipath routes for example). Besides the new sysctl we need
to pass the skip_notify setting through the generic fib6_clean and
fib6_walk functions to fib6_clean_node and to set skip_notify on calls
to __ip_del_rt for the addrconf_ifdown path.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Document r8a7744 specific compatible strings. No driver change is
needed as the fallback compatible string "renesas,tpu" activates the
right code in the driver.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Document the R-Car V3{M|H} (R8A779{7|8}0) SoC in the Renesas TPU
bindings; the TPU hardware in those is the Renesas standard 4-channel
timer pulse unit.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Document the R-Car V3{M|H} (R8A779{7|8}0) SoC in the Renesas R-Car PWM
bindings. R8A77970's hardware is a generic R-Car gen3 PWM, while R8A77980
has an extra error injection register...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The "compatible" property description contradicts even the example given:
it only says that there must be a single value while the example has the
fallback value too -- which makes much more sense. Moreover, the generic
property value is misdocumented as being R-Car (and RZ/G1) specific...
Fixes: 382457e562 ("pwm: renesas-tpu: Add DT support")
Fixes: 3ba111a018 ("dt-bindings: pwm: renesas-tpu: Document r8a774[35] support")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
On platforms using the Common Clock Framework, "%pC" prints the clock's
name. On legacy platforms, it prints the unhashed clock's address,
potentially leaking sensitive information regarding the kernel layout in
memory.
Avoid this leak by printing the hashed address instead. To distinguish
between clocks, a 32-bit unique identifier is as good as an actual
pointer value.
Fixes: ad67b74d24 ("printk: hash addresses printed with %p")
Link: http://lkml.kernel.org/r/20181011084249.4520-3-geert+renesas@glider.be
To: "Tobin C . Harding" <me@tobin.cc>
To: Andrew Morton <akpm@linux-foundation.org>
To: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Some touchscreens, depending on the firmware and/or the digitizer, report
coordinates which never reach 0 along one or both of their axis.
This has been seen for example on the Silead touchscreens on a Onda V891w
and a Point of View mobii TAB-P800w(v2.0).
This commit adds support for touchscreen-min-x and touchscreen-min-y
device-properties which can be set to communicate the actual start
coordinates (rather then 0,0) to userspace.
This commit also drop the "(in pixels)" comment from the documentation
of the touchscreen-size-x and touchscreen-size-y properties. The comment
suggested that there is a relation between the range of reported
coordinates and the display resolution, which is only true for some
devices. The "(in pixels)" comment is replaced with "(maximum x coordinate
reported + 1)" to mirror the language describing the new touchscreen-min-x
and -min-y properties.
When set this fixes e.g. not being able to click things in the GNOME3
top-bar on the 2 example tablets.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This patch implements the 'pattern_set'and 'pattern_clear'
interfaces to support SC27XX LED breathing mode.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Acked-by: Pavel Machek <pavel@ucw.c>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
This patch adds a new LED trigger that LED device can configure
to employ software or hardware pattern engine.
Consumers can write 'pattern' file to enable the software pattern
which alters the brightness for the specified duration with one
software timer.
Moreover consumers can write 'hw_pattern' file to enable the hardware
pattern for some LED controllers which can autonomously control
brightness over time, according to some preprogrammed hardware
patterns.
Signed-off-by: Raphael Teysseyre <rteysseyre@gmail.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
In preparation to convert board-level bindings to json-schema, move
various misc SoC bindings out to their own file.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Jun Nie <jun.nie@linaro.org>
Cc: Baoyou Xie <baoyou.xie@linaro.org>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
In preparation to convert board-level bindings to json-schema, move
various misc SoC bindings out to their own file.
Acked-by: Shawn Guo <shawnguo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
In preparation to convert board-level bindings to json-schema, move
various misc SoC bindings out to their own file.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
The ntb_hw_switchtec driver has requirements on kernel configuration so add
these notes to the documentation and also clean up a few other sentences in
the documentation.
Signed-off-by: Wesley Yung <wesley.yung@microchip.com>
Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
This is the SPI controller found on Marvel MMP2 and perhaps more
platforms.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Move GENI SE SPI controller device-tree bindings
from devicetree/bindings/soc/qcom/qcom,geni-se.txt
to devicetree/bindings/spi/qcom,spi-geni-qcom.txt.
Signed-off-by: Dilip Kota <dkota@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
SPI controller driver should maintain the maximum frequency
of the controller instead of relying on device tree bindings.
Because maximum frequency is specific property of SPI
controller.
Signed-off-by: Dilip Kota <dkota@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Bindings for Qualcomm Quad SPI used on SoCs such as sdm845.
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
Signed-off-by: Ryan Case <ryandcase@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This compatible adds the ability for dw spi controller driver to work with
the dw spi controller found on Alpine chips.
The dw spi controller has an auto-deselect of Chip-Select, in case there is
no data inside the Tx FIFO. While working on platforms with Alpine chips,
auto-deselect mode causes an issue for some spi devices that can't handle
the Chip-Select deselect in the middle of a transaction. It is a normal
behavior for a Tx FIFO to be empty in the middle of a transaction, due to
busy cpu. In the Alpine chip family an option to change the default
behavior was added to the original dw spi controller to prevent this issue
of de-asserting Chip-Select once TX FIFO is empty. The change was to allow
SW manual control of the Chip-Select. With this change, as long as the
Slave Enable Register is asserted, the Chip-Select will be asserted. As a
result, it is necessary to deselect the Slave Select Register once the
transaction is done. This feature is enabled via a new device compatible
string called 'amazon,alpine-dw-apb-ssi'. Once the driver identifies the
new compatible string, it enables the hw fixup logic, by writing to a
dedicated register found in the IP reserved area and will start manual
deselecting the Slave Select Register when the transfer ends.
Signed-off-by: Talel Shenhar <talel@amazon.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add the SPDX header to the STM class documentation.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The rules and order of identification of trace sources against the
"stp-policy" have changed; update the documentation to reflect that.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This adds ABI documentation for the new configfs attributes that come
with the MIPI SyS-T protocol driver.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Refresh the document:
- Remove unnecessary liguistic complexity and improve the clarity of the text
- Improve the explanations all around
- Remove unnecessary and stale version info
- Fix whitespace noise
- Make pseudo-code match kernel style
- Fix minor syntax errors in pseudo-code
- Use consistent denotation
- Mark multi-CPU sequences more explicitly
- Unbreak line breaks
- Use quotes to refer to 'struct completion'
- Use 'IRQ context' and 'IRQs' consistently
- Improve grammar
- etc.
Cc: John Garry <john.garry@huawei.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nicholas Mc Guire <hofrat@osadl.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: corbet@lwn.net
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/1539183392-239389-1-git-send-email-john.garry@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This patch fixes a couple of punctuation nits which can make the document
more correct and readable.
Also missing "()" are added to some function references for consistency.
Signed-off-by: John Garry <john.garry@huawei.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: corbet@lwn.net
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/1539183392-239389-1-git-send-email-john.garry@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Booting with "lsm.debug" will report future details on how LSM ordering
decisions are being made.
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: John Johansen <john.johansen@canonical.com>
Reviewed-by: James Morris <james.morris@microsoft.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
An ina3221 chip has three input ports. Each port is used
to measure the voltage and current of its input source.
The DT binding now has defined bindings for their input
sources, so the driver should read these information and
handle accordingly.
This patch adds a new structure of input source specific
information including input source label, shunt resistor
value and its connection status. It exposes these labels
via in[123]_label sysfs nodes upon available, and also
disables those channels where there are no input source
being connected. Meanwhile, it also adds in[123]_enable
sysfs nodes for users to get control of three channels,
and returns -ENODATA code for any sensor read according
to hwmon ABI.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Texas Instruments INA3221 is a triple-channel shunt and bus
voltage monitor. This patch adds a DT binding doc for it.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
MAX31725/MAX31726 are local temperature sensors with +/- 0.5 degree
Celsius accuracy and 16-bit (0.00390625 degrees Celsius) resolution.
They have a register mapping and encoding compatible with the lm75
series drivers. Address scan and extended temperature range are
not supported by this patch.
Tested on real hardware and verified temperature readings are correct.
Signed-off-by: Kun Yi <kunyi@google.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Use the nxp.com URLs for the MC13783 and MC13892 datasheets.
The original URLs are still valid, but the nxp.com one is shorter
and more up-to-date.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
'Atlas' was an internal name for the MC13783 PMIC only and does not
apply to MC13892.
To avoid confusion, remove the 'Atlas' term from the description.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This patch adds support for LTM4686 Ultrathin Dual 10A or
Single 20A uModule Regulator with Digital Power System Management.
Datasheet: http://www.analog.com/ltm4686
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
For now, just provide an API to allocate and remove ufs-bsg node. We
will use this framework to manage ufs devices by sending UPIU
transactions.
For the time being, implements an empty bsg_request() - will add some
more functionality in coming patches.
Nonetheless, we reveal here the protocol we are planning to use: UFS
Transport Protocol Transactions. UFS transactions consist of packets
called UFS Protocol Information Units (UPIU).
There are UPIU’s defined for UFS SCSI commands, responses, data in and
data out, task management, utility functions, vendor functions,
transaction synchronization and control, and more.
By using UPIUs, we get access to the most fine-grained internals of this
protocol, and able to communicate with the device in ways, that are
sometimes beyond the capacity of the ufs driver.
Moreover and as a result, our core structure - ufs_bsg_node has a pretty
lean structure: using upiu transactions that contains the outmost
detailed info, so we don't really need complex constructs to support it.
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <Bart.VanAssche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add $argN special fetch variable for accessing function
arguments. This allows user to trace the Nth argument easily
at the function entry.
Note that this returns most probably assignment of registers
and stacks. In some case, it may not work well. If you need
to access correct registers or stacks you should use perf-probe.
Link: http://lkml.kernel.org/r/152465888632.26224.3412465701570253696.stgit@devbox
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Add array type support for probe events.
This allows user to get arraied types from memory address.
The array type syntax is
TYPE[N]
Where TYPE is one of types (u8/16/32/64,s8/16/32/64,
x8/16/32/64, symbol, string) and N is a fixed value less
than 64.
The string array type is a bit different from other types. For
other base types, <base-type>[1] is equal to <base-type>
(e.g. +0(%di):x32[1] is same as +0(%di):x32.) But string[1] is not
equal to string. The string type itself represents "char array",
but string array type represents "char * array". So, for example,
+0(%di):string[1] is equal to +0(+0(%di)):string.
Link: http://lkml.kernel.org/r/152465891533.26224.6150658225601339931.stgit@devbox
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Add "symbol" type to probeevent, which is an alias of u32 or u64
(depends on BITS_PER_LONG). This shows the result value in
symbol+offset style. This type is only available with kprobe
events.
Link: http://lkml.kernel.org/r/152465882860.26224.14779072294412467338.stgit@devbox
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Short version: it does the right thing when given NULL or ERR_PTR(...)
and its calling conventions are chosen to have minimal PITA when
used in ->lookup() instances.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Arm v8 architecture supports multiple page sizes - 4k, 16k and
64k. Based on the active page size, the Linux port supports
corresponding hugepage sizes at PMD and PUD(4k only) levels.
In addition, the architecture also supports caching larger sized
ranges (composed of multiple entries) at the PTE and PMD level in the
TLBs using the contiguous bit. The Linux port makes use of this
architectural support to enable additional hugepage sizes.
Describe the two different types of hugepages supported by the arm64
kernel and the hugepage sizes enabled by each.
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Document that we actually work around ARM erratum 1188873
Fixes: 95b861a4a6 ("arm64: arch_timer: Add workaround for ARM erratum 1188873")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This patchset adds CCF compliant clock driver for ZynqMP.
Clock driver queries supported clock information from firmware
and regiters pll and output clocks with CCF.
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Merge tag 'zynqmp-soc-clk-for-v4.20' of https://github.com/Xilinx/linux-xlnx into next/drivers
arm64: zynqmp: SoC CLK changes for v4.20
This patchset adds CCF compliant clock driver for ZynqMP.
Clock driver queries supported clock information from firmware
and regiters pll and output clocks with CCF.
* tag 'zynqmp-soc-clk-for-v4.20' of https://github.com/Xilinx/linux-xlnx:
drivers: clk: Add ZynqMP clock driver
dt-bindings: clock: Add bindings for ZynqMP clock driver
firmware: xilinx: Add zynqmp IOCTL API for device control
Documentation: xilinx: Add documentation for eemi APIs
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This adds a new driver for the PDC Global (Power Domain Controller)
reset controller found on Qualcomm SDM845 SoCs, fixes a potential
use-after-free issue in reset_controller_dev.of_xlate() callbacks
from __of_reset_control_get(), and trivially fixes a documentation
grammar issue.
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Merge tag 'reset-for-4.20' of git://git.pengutronix.de/git/pza/linux into next/drivers
Reset controller changes for v4.20
This adds a new driver for the PDC Global (Power Domain Controller)
reset controller found on Qualcomm SDM845 SoCs, fixes a potential
use-after-free issue in reset_controller_dev.of_xlate() callbacks
from __of_reset_control_get(), and trivially fixes a documentation
grammar issue.
* tag 'reset-for-4.20' of git://git.pengutronix.de/git/pza/linux:
reset: Fix potential use-after-free in __of_reset_control_get()
reset: qcom: PDC Global (Power Domain Controller) reset controller
dt-bindings: reset: Add PDC Global binding for SDM845 SoCs
reset: Grammar s/more then once/more than once/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- A series from Aisheng Dong to add SCU firmware driver for i.MX8
SoCs. It implements IPC mechanism based on mailbox for message
exchange between AP and SCU firmware, and a set of SCU IPC
service APIs used by clients like i.MX8 power domain and clock
drivers.
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Merge tag 'imx-drivers-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/drivers
i.MX drivers change for 4.20, round 2:
- A series from Aisheng Dong to add SCU firmware driver for i.MX8
SoCs. It implements IPC mechanism based on mailbox for message
exchange between AP and SCU firmware, and a set of SCU IPC
service APIs used by clients like i.MX8 power domain and clock
drivers.
* tag 'imx-drivers-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
MAINTAINERS: imx: include drivers/firmware/imx path
firmware: imx: add misc svc support
firmware: imx: add SCU firmware driver support
dt-bindings: arm: fsl: add scu binding doc
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- Add support for the new RZ/N1D (R9A06G032) and RZ/N1S (R9A06G033)
SoCs,
- Add INTC-EX pin groups on R-Car E3.
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Merge tag 'sh-pfc-for-v4.20-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel
pinctrl: sh-pfc: Updates for v4.20 (take three)
- Add support for the new RZ/N1D (R9A06G032) and RZ/N1S (R9A06G033)
SoCs,
- Add INTC-EX pin groups on R-Car E3.
Xen PVH guests receive the address of the RSDP table from Xen. In order
to support booting a Xen PVH guest via Grub2 using the standard x86
boot entry we need a way for Grub2 to pass the RSDP address to the
kernel.
For this purpose expand the struct setup_header to hold the physical
address of the RSDP address. Being zero means it isn't specified and
has to be located the legacy way (searching through low memory or
EBDA).
While documenting the new setup_header layout and protocol version
2.14 add the missing documentation of protocol version 2.13.
There are Grub2 versions in several distros with a downstream patch
violating the boot protocol by writing past the end of setup_header.
This requires another update of the boot protocol to enable the kernel
to distinguish between a specified RSDP address and one filled with
garbage by such a broken Grub2.
From protocol 2.14 on Grub2 will write the version it is supporting
(but never a higher value than found to be supported by the kernel)
ored with 0x8000 to the version field of setup_header. This enables
the kernel to know up to which field Grub2 has written information
to. All fields after that are supposed to be clobbered.
Signed-off-by: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: boris.ostrovsky@oracle.com
Cc: bp@alien8.de
Cc: corbet@lwn.net
Cc: linux-doc@vger.kernel.org
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/20181010061456.22238-3-jgross@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This patch adds documentation of device tree bindings for the Synopsys
GPIO via CREG driver.
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Northstar has mux controller just like Northstar Plus and Northstar2.
It's a bit different though (different registers & pins) so it requires
its own binding.
It's needed to allow other block bindings specify required mux setup.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Kees Cook <keescook@chromium.org>
Fix Documentation location reference for where LSM descriptions should
be placed.
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: linux-security-module@vger.kernel.org
Signed-off-by: James Morris <james.morris@microsoft.com>
Implement the required wait and kick callbacks to support PV spinlocks in
Hyper-V guests.
[ tglx: Document the requirement for disabling interrupts in the wait()
callback. Remove goto and unnecessary includes. Add prototype
for hv_vcpu_is_preempted(). Adapted to pending paravirt changes. ]
Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Michael Kelley (EOSG) <Michael.H.Kelley@microsoft.com>
Cc: chao.p.peng@intel.com
Cc: chao.gao@intel.com
Cc: isaku.yamahata@intel.com
Cc: tianyu.lan@microsoft.com
Link: https://lkml.kernel.org/r/1538987374-51217-3-git-send-email-yi.y.sun@linux.intel.com
Add compatible strings for r8a7744. No driver change is needed as
"renesas,rcar-gen2-vin" will activate the right code.However, it is good
practice to document compatible strings for the specific SoC as this
allows SoC specific changes to the driver if needed, in addition to
document SoC support and therefore allow checkpatch.pl to validate
compatible string values.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Add documentation to describe Xilinx ZynqMP clock driver
bindings.
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Add documentation for embedded energy management interface (EEMI)
APIs. It includes information about eemi ops and how to use them.
It also includes API information and supported IOCTL IDs which can
be used for device and control configuration.
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
The driver for S6E63M0 AMOLED LCD panel is not used. It does not
support DeviceTree and respective possible users (S5Pv210 Aquila and
Goni boards) are DeviceTree-only.
Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Add a new compatible to use the host controller driver with the
MMC PHY on TI's AM654 SOCs
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Alexei Starovoitov says:
====================
pull-request: bpf-next 2018-10-08
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) sk_lookup_[tcp|udp] and sk_release helpers from Joe Stringer which allow
BPF programs to perform lookups for sockets in a network namespace. This would
allow programs to determine early on in processing whether the stack is
expecting to receive the packet, and perform some action (eg drop,
forward somewhere) based on this information.
2) per-cpu cgroup local storage from Roman Gushchin.
Per-cpu cgroup local storage is very similar to simple cgroup storage
except all the data is per-cpu. The main goal of per-cpu variant is to
implement super fast counters (e.g. packet counters), which don't require
neither lookups, neither atomic operations in a fast path.
The example of these hybrid counters is in selftests/bpf/netcnt_prog.c
3) allow HW offload of programs with BPF-to-BPF function calls from Quentin Monnet
4) support more than 64-byte key/value in HW offloaded BPF maps from Jakub Kicinski
5) rename of libbpf interfaces from Andrey Ignatov.
libbpf is maturing as a library and should follow good practices in
library design and implementation to play well with other libraries.
This patch set brings consistent naming convention to global symbols.
6) relicense libbpf as LGPL-2.1 OR BSD-2-Clause from Alexei Starovoitov
to let Apache2 projects use libbpf
7) various AF_XDP fixes from Björn and Magnus
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds a KVM_PPC_NO_HASH flag to the flags field of the
kvm_ppc_smmu_info struct, and arranges for it to be set when
running as a nested hypervisor, as an unambiguous indication
to userspace that HPT guests are not supported. Reporting the
KVM_CAP_PPC_MMU_HASH_V3 capability as false could be taken as
indicating only that the new HPT features in ISA V3.0 are not
supported, leaving it ambiguous whether pre-V3.0 HPT features
are supported.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
With this, userspace can enable a KVM-HV guest to run nested guests
under it.
The administrator can control whether any nested guests can be run;
setting the "nested" module parameter to false prevents any guests
becoming nested hypervisors (that is, any attempt to enable the nested
capability on a guest will fail). Guests which are already nested
hypervisors will continue to be so.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This merges in the "ppc-kvm" topic branch of the powerpc tree to get a
series of commits that touch both general arch/powerpc code and KVM
code. These commits will be merged both via the KVM tree and the
powerpc tree.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This adds a one-reg register identifier which can be used to read and
set the virtual PTCR for the guest. This register identifies the
address and size of the virtual partition table for the guest, which
contains information about the nested guests under this guest.
Migrating this value is the only extra requirement for migrating a
guest which has nested guests (assuming of course that the destination
host supports nested virtualization in the kvm-hv module).
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Allow setting the clock provider for the external clock called "mclk".
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
The STPMIC1 regulators supply power to the application processor as well as
to the external system peripherals such as DDR, Flash memories and system
devices.
Signed-off-by: pascal paillet <p.paillet@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
- improve overcorrent handling for imx
- some small code restructure (no function affect)
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Merge tag 'usb-ci-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-testing
Peter writes:
- Add pinctrl support for dual-role switch at chipidea-core
- improve overcorrent handling for imx
- some small code restructure (no function affect)
* tag 'usb-ci-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb:
usb: chipidea: Fix otg event handler
usb: chipidea: Prevent unbalanced IRQ disable
doc: usb: ci-hdrc-usb2: Add pinctrl properties definition
usb: chipidea: Add dynamic pinctrl selection
usb: chipidea: imx: make MODULE_LICENCE and SPDX-identifier match
usb: chipidea: imx: enable OTG overcurrent in case USB subsystem is already started
usb: chipidea: imx: do not use preprocessor conditionals for PM
On MT2712 MSDC0/3, HCLK/bus-clk need gate/ungate together,
or will hang when access MSDC register.
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add a device tree documentation file for the wm8782 stereo DAC to describe
the regulator handles.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add support for r8a7744 SoC. Renesas RZ/G1N (R8A7744) MMCIF is identical
to the R-Car Gen2 family.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add support for r8a7744 SoC. Renesas RZ/G1N (R8A7744) SDHI is identical
to the R-Car Gen2 family.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Add bindings documentation for pad pull up and pull down offset values to be
programmed before executing automatic pad drive strength calibration.
Signed-off-by: Aapo Vienamo <avienamo@nvidia.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Document the pinctrl bindings used by the SDHCI driver to reconfigure
pad voltages on controllers supporting multiple voltage levels.
Signed-off-by: Aapo Vienamo <avienamo@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This SD/eMMC controller is used for UniPhier SoC family.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The JZ4725B is the first JZ SoC version that introduced a 32-bit IMASK
register, not the JZ4750.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Document the R-Car V3M (R8A77970) SoC in the R-Car SDHI bindings -- it's
the usual R-Car gen3 compatible controller with the internal DMA engine.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
bpf_asm and the other classic BPF tools support jump conditions
comparing register A to register X, in addition to comparing
register A with constant K.
Only the latter was documented in filter.txt, add two new addressing
modes that describe the former.
Signed-off-by: Arthur Fabre <arthur@arthurfabre.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
The System Controller Firmware (SCFW) is a low-level system function
which runs on a dedicated Cortex-M core to provide power, clock, and
resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
(QM, QP), and i.MX8QX (QXP, DX).
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
My eyesight is not in good shape, which means that I have difficulty
reading the online Linux documentation. Specifically, body text is
oddly small compared to list items and the contrast of various text
elements is too low for me to be able to see easily.
Therefore, alter the HTML theme overrides to make the text larger and
increase the contrast for better visibility, and trust the typeface
choices of the reader's browser.
For the PDF output, increase the text size, use a sans-serif typeface
for sans-serif text, and use a serif typeface for "roman" serif text.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Current phrasing is ambiguous since it's unclear if attaching to a
children through PTRACE_TRACEME requires CAP_SYS_PTRACE. Rephrase the
sentence to make that clear.
Signed-off-by: Yves-Alexis Perez <corsac@corsac.net>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The memory hotplug notifier description is about kernel internals rather
than admin/user visible API. Place it appropriately.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The memory hotplug description in Documentation/memory-hotplug.txt is
already formatted as ReST and can be easily added to admin-guide/mm
section.
While on it, slightly update formatting to make it consistent with the
doc-guide.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Add a corresponding model list entry for ASUS G751 so that user can
test the quirk for another compatible machines more easily.
Reported-and-tested-by: Håvard <hovardslill@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Here are 8 small fixes for some char/misc driver issues
Included here are:
- fpga driver fixes
- thunderbolt bugfixes
- firmware core revert/fix
- hv core fix
- hv tool fix
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
I wrote:
"Char/Misc fixes for 4.19-rc7
Here are 8 small fixes for some char/misc driver issues
Included here are:
- fpga driver fixes
- thunderbolt bugfixes
- firmware core revert/fix
- hv core fix
- hv tool fix
All of these have been in linux-next with no reported issues."
* tag 'char-misc-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
thunderbolt: Initialize after IOMMUs
thunderbolt: Do not handle ICM events after domain is stopped
firmware: Always initialize the fw_priv list object
docs: fpga: document fpga manager flags
fpga: bridge: fix obvious function documentation error
tools: hv: fcopy: set 'error' in case an unknown operation was requested
fpga: do not access region struct after fpga_region_unregister
Drivers: hv: vmbus: Use get/put_cpu() in vmbus_connect()
After the cleanups from Baoquan He, make it even more readable:
- Remove the 'bits' area size column: it's pretty pointless and was even
wrong for some of the entries. Given that MB, GB, TB, PT are 10, 20,
30 and 40 bits, a "8 TB" size description makes it obvious that it's
43 bits.
- Introduce an "offset" column:
--------------------------------------------------------------------------------
start addr | offset | end addr | size | VM area description
-----------------|------------|------------------|---------|--------------------
...
ffff880000000000 | -120 TB | ffffc7ffffffffff | 64 TB | direct mapping of all physical memory (page_offset_base),
this is what limits max physical memory supported.
The -120 TB notation makes it obvious where this particular virtual memory
region starts: 120 TB down from the top of the 64-bit virtual memory space.
Especially the layout of the kernel mappings is a *lot* more obvious when
written this way, plus it's much easier to compare it with the size column
and understand/check/validate and modify the kernel's layout in the future.
- Mark the part from where the 47-bit and 56-bit kernel layouts are 100% identical,
this starts at the -512 GB offset and the EFI region.
- Re-shuffle the size desciptions to be continous blocks of sizes, instead of the
often mixed size. I.e. write "0.5 TB" instead of "512 GB" if we are still in
the TB-granular region of the map.
- Make the 47-bit and 56-bit descriptions use the *exact* same layout and wording,
and only differ where there's a material difference. This makes it easy to compare
the two tables side by side by switching between two terminal tabs.
- Plus enhance a lot of other stylistic/typographical details: make the tables
explicitly tabular, add headers, enhance certain entries, etc. etc.
Note that there are some apparent errors in the tables as well, but I'll fix
them in a separate patch to make it easier to review/validate.
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: corbet@lwn.net
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: thgarnie@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull irqchip updates from Marc Zyngier:
- kexec/kdump support for EFI-based GICv3 platforms
- Marvell SEI support
- QC PDC fixes
- GIC cleanups and optimizations
- DT updates
[ tglx: Dropped the madera driver as it breaks the build ]
In Documentation/x86/x86_64/mm.txt, the description of the x86-64 virtual
memory layout has become a confusing hodgepodge of inconsistencies:
- there's a hard to read mixture of 'TB' and 'bits' notation
- the entries sometimes mention a size in the description and sometimes not
- sometimes they list holes by address, sometimes only as an 'unused hole' line
So make it all a coherent, readable, well organized description.
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: corbet@lwn.net
Cc: linux-doc@vger.kernel.org
Cc: thgarnie@google.com
Link: http://lkml.kernel.org/r/20181006084327.27467-3-bhe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Move the ext4 data structures book to Documentation/filesystems/ext4/
since the administrative information moved elsewhere.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Move the ext4 mount option and other administrative stuff to the Linux
administrator's guide.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
HSIO register address space should be handled outside of the MAC
controller as there are some registers for PLL5 configuring,
SerDes/switch port muxing and a thermal sensor IP, so let's remove it.
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove the additional definition tag declared for WCSS sub-system
under reset-names.
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
With 63 non-merge commits, this is not a large merge window for USB
peripheral. The largest changes go to the UVC gadget driver which a
few folks have been improving.
Apart from UVC changes, we have a few more devices being added to
Renesas USB3 and DWC3 controller drivers and a couple minor bug fixes
on other drivers.
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Merge tag 'usb-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
USB for v4.20
With 63 non-merge commits, this is not a large merge window for USB
peripheral. The largest changes go to the UVC gadget driver which a
few folks have been improving.
Apart from UVC changes, we have a few more devices being added to
Renesas USB3 and DWC3 controller drivers and a couple minor bug fixes
on other drivers.
* tag 'usb-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (63 commits)
USB: net2280: Remove ->disconnect() callback from net2280_pullup()
usb: dwc2: disable power_down on rockchip devices
usb: gadget: udc: renesas_usb3: add support for r8a77990
dt-bindings: usb: renesas_usb3: add bindings for r8a77990
usb: gadget: udc: renesas_usb3: Add r8a774a1 support
usb: gadget: udc: renesas_usb3: Fix b-device mode for "workaround"
usb: dwc2: gadget: Add handler for WkupAlert interrupt
usb: dwc2: gadget: enable WKUP_ALERT interrupt
usb: dwc2: gadget: Program GREFCLK register
usb: dwc2: gadget: Add parameters for GREFCLK register
usb: dwc2: Add definitions for new registers
usb: dwc2: Update target (u)frame calculation
usb: dwc2: Add dwc2_gadget_dec_frame_num_by_one() function
usb: dwc2: Add core parameter for service interval support
usb: dwc2: Update registers definitions to support service interval
usb: renesas_usbhs: add support for R-Car E3
dt-bindings: usb: renesas_usbhs: add bindings for r8a77990
usb: renesas_usbhs: rcar3: Use OTG mode for R-Car D3
Revert "usb: renesas_usbhs: set the mode by using extcon state for non-otg channel"
usb: gadget: f_uac2: disable IN/OUT ep if unused
...
If the HDMI cable is disconnected or the CEC adapter is manually
unconfigured, then all pending transmits and wait-for-replies are
aborted. Signal this with new status bits (CEC_RX/TX_STATUS_ABORTED).
If due to (usually) a driver bug a transmit never ends (i.e. the
transmit_done was never called by the driver), then when this times
out the message is marked with CEC_TX_STATUS_TIMEOUT.
This should not happen and is an indication of a driver bug.
Without a separate status bit for this it was impossible to detect
this from userspace.
The 'transmit timed out' kernel message is now a warning, so this
should be more prominent in the kernel log as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org> # for v4.18 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Clarify that calling cec_transmit_done can start a new transmit and
that you should put the hardware in a state that allows for a new
transmit before calling this function.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Single patch from Wang Xin improving the read/write loop in at24
under high load.
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Merge tag 'at24-4.20-updates-for-wolfram' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-4.20
AT24 updates for 4.20
Single patch from Wang Xin improving the read/write loop in at24
under high load.
Add device-tree bindings documentation file for ADAU1977 audio codec.
This describes device-tree fields that are already supported by the driver.
The driver supports both I2C AND and SPI, and this doc covers both aspects
of the DT configuration.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This is documented as "required" but won't be present in old dtbs.
These resets are also present on other imx chips but right now only
imx7d implements them through the reset controller subsystem.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
It is best practice to have 1 binding per file, so board level bindings
should be separate for various misc SoC bindings. Move the Alpine CPU
control to al,alpine-smp and we can also remove a cross reference.
Cc: Tsahee Zidenberg <tsahee@annapurnalabs.com>
Cc: Antoine Tenart <antoine.tenart@free-electrons.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Fix a simple typo: Completetion -> Completion
Signed-off-by: Konrad Djimeli <kdjimeli@igalia.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This patch adds a new file to add information about configuration
parameters that are supported by bnxt_en driver via devlink.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a new file to add information about some of the
generic configuration parameters set via devlink.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
As the v4l2-fwnode framework now allows specifying defaults configurations,
expand the description of the optional endpoint properties for the CEU
interface to better explain which are their defaults values.
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Refer to video-interfaces.txt when describing standard properties.
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Allow specifying the bus type explicitly for MIPI D-PHY, parallel and
Bt.656 busses. This is useful for devices that can make use of different
bus types. There are CSI-2 transmitters and receivers but the PHY
selection needs to be made between C-PHY and D-PHY; many devices also
support parallel and Bt.656 interfaces but the means to pass that
information to software wasn't there.
Autodetection (value 0) is removed as an option as the property could be
simply omitted in that case.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Update the doc to describe the new method of adding subdevice
descriptors to async notifiers.
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Clarify that when you receive V4L2_EVENT_SOURCE_CHANGE with flag
V4L2_EVENT_SRC_CH_RESOLUTION set, and the new resolution appears
identical to the old resolution, then you still must restart the
streaming I/O.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This reverts commit c550f01c81.
Turns out the samsung tty driver is mucking around in the "unused" port
fields and this patch breaks that code :(
So we need to fix that driver up before this can be accepted.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Initial version of AP crypto virtualization via vfio-mdev
- Set the host program identifier
- Optimize page table locking
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Merge tag 'kvm-s390-next-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Features for 4.20
- Initial version of AP crypto virtualization via vfio-mdev
- Set the host program identifier
- Optimize page table locking
dtc warning, gpio setting for the sdmmc regulator on radxarock and a
new board the "S" variant of the rk3288-based Tinker board, that sports
an added emmc.
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Merge tag 'v4.20-rockchip-dts32-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/dt
Nodes for the newly support rk3188 display controller, a fix for a new
dtc warning, gpio setting for the sdmmc regulator on radxarock and a
new board the "S" variant of the rk3288-based Tinker board, that sports
an added emmc.
* tag 'v4.20-rockchip-dts32-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: rockchip: add rk3288-based Tinker board S
ARM: dts: rockchip: move shared tinker-board nodes to a common dtsi
ARM: dts: rockchip: explicitly set vcc_sd0 pin to gpio on rk3188-radxarock
ARM: dts: rockchip: Fix erroneous SPI bus dtc warnings on rk3036
ARM: dts: rockchip: add rk3188 lcd controller nodes
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
as the Vamrs Rock960. Another big feature is display support including hdmi
and the Innosilicon hdmiphy on the rk3328, right now enabled on the rock64.
The rock64 also got its spi-nor and spdif enabled. On the px30 we can see
dwc2-based usb support now and finally some misc fixes, like for a new dtc
warning, missing address and size cells and microSD fix on sapphire.
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Merge tag 'v4.20-rockchip-dts64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/dt
Some additional new boards, the rk3399-based RockPro64 from Pine64, as well
as the Vamrs Rock960. Another big feature is display support including hdmi
and the Innosilicon hdmiphy on the rk3328, right now enabled on the rock64.
The rock64 also got its spi-nor and spdif enabled. On the px30 we can see
dwc2-based usb support now and finally some misc fixes, like for a new dtc
warning, missing address and size cells and microSD fix on sapphire.
* tag 'v4.20-rockchip-dts64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: enable display nodes on rk3328-rock64
arm64: dts: rockchip: add rk3328 display nodes
arm64: dts: rockchip: add Innosilicon hdmi phy node to rk3328
arm64: dts: rockchip: add missing address and size cells for rk3399 mipi dsi
arm64: dts: rockchip: Enable SPI NOR flash on Rock64
arm64: dts: rockchip: add initial dts support for Rockpro64
arm64: dts: rockchip: enable dwc2-based otg controller on px30-evb
arm64: dts: rockchip: add dwc2 otg controller on px30
dt-bindings: usb: dwc2: add description for px30
arm64: dts: rockchip: Enable SD card detection for Rock960 boards
arm64: dts: rockchip: Add support for Rock960 board
dt-bindings: arm: rockchip: Add binding for Rock960 board
arm64: dts: rockchip: Split out common nodes for Rock960 based boards
arm64: dts: rockchip: add spdif sound node for rock64
arm64: dts: rockchip: Fix microSD in rk3399 sapphire board
arm64: dts: rockchip: Fix I2C bus unit-address error on rk3399-puma-haikou
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The driver already has support for setting the FDRB bit in the CONFA
register through platform data, but there was no property to set it
in the device-tree bindings.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add internal PCI bridge support for r8a7744 SoC. The Renesas RZ/G1N
(R8A7744) internal PCI bridge is identical to the R-Car Gen2 family.
This doesn't change the driver, so it does nothing by itself. But it does
mean that checkpatch won't complain about a future patch that adds
"renesas,pci-r8a7744" to a DT, which helps ensure that shipped DTs use
documented compatibility strings.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Allow the epoch value to be queried on a server connection. This is in the
rxrpc header of every packet for use in routing and is derived from the
client's state. It's also not supposed to change unless the client gets
restarted.
AFS can make use of this information to deduce whether a fileserver has
been restarted because the fileserver makes client calls to the filesystem
driver's cache manager to send notifications (ie. callback breaks) about
conflicting changes from other clients. These convey the fileserver's own
epoch value back to the filesystem.
Signed-off-by: David Howells <dhowells@redhat.com>
Allow the timestamp on the sk_buff holding the first DATA packet of a reply
to be queried. This can then be used as a base for the expiry time
calculation on the callback promise duration indicated by an operation
result.
Signed-off-by: David Howells <dhowells@redhat.com>
Minor conflict in net/core/rtnetlink.c, David Ahern's bug fix in 'net'
overlapped the renaming of a netlink attribute in net-next.
Signed-off-by: David S. Miller <davem@davemloft.net>
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BackMerge v4.19-rc6 into drm-next
I have some pulls based on rc6, and I prefer to have an explicit backmerge.
Signed-off-by: Dave Airlie <airlied@redhat.com>
- This patch series enables out-bridge for LVDS bridge device support,
and also includes two cleanups and one relevant dt binding update
for this.
Add Samsung 16x16 tiled format support
- This patch series adds Samsung 16x16 tiled format to scaler and
gsc drivers. As for this, it adds Samsung specific format to
drm_forcc.h header. For the git-pull request with relevant patches,
I requested ack-by[1] to relevant maintainers but there was no any response.
I'm pretty sure no problem to go to mainline though Exynos tree
because the only user of it is Exynos.
[1] https://patchwork.freedesktop.org/patch/243921/
Add configurable plane alpha and pixel blend mode support
- This patch series makes mixer driver to be configuragle for
pixel blend mode and plane alpha, which also includes one fixup
to set all default values correctly after reset.
One cleanup
- This patch replaces drm_atomic_helper_suspend/resume() with
drm_mode_config_helper_suspend/resume() to remove exynos specific
suspend_state.
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Merge tag 'exynos-drm-next-for-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next
Add out-bridge support
- This patch series enables out-bridge for LVDS bridge device support,
and also includes two cleanups and one relevant dt binding update
for this.
Add Samsung 16x16 tiled format support
- This patch series adds Samsung 16x16 tiled format to scaler and
gsc drivers. As for this, it adds Samsung specific format to
drm_forcc.h header. For the git-pull request with relevant patches,
I requested ack-by[1] to relevant maintainers but there was no any response.
I'm pretty sure no problem to go to mainline though Exynos tree
because the only user of it is Exynos.
(airlied: this looked fine to me)
[1] https://patchwork.freedesktop.org/patch/243921/
Add configurable plane alpha and pixel blend mode support
- This patch series makes mixer driver to be configuragle for
pixel blend mode and plane alpha, which also includes one fixup
to set all default values correctly after reset.
One cleanup
- This patch replaces drm_atomic_helper_suspend/resume() with
drm_mode_config_helper_suspend/resume() to remove exynos specific
suspend_state.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1538380891-24040-1-git-send-email-inki.dae@samsung.com
David writes:
"Networking fixes:
1) Prefix length validation in xfrm layer, from Steffen Klassert.
2) TX status reporting fix in mac80211, from Andrei Otcheretianski.
3) Fix hangs due to TX_DROP in mac80211, from Bob Copeland.
4) Fix DMA error regression in b43, from Larry Finger.
5) Add input validation to xenvif_set_hash_mapping(), from Jan Beulich.
6) SMMU unmapping fix in hns driver, from Yunsheng Lin.
7) Bluetooh crash in unpairing on SMP, from Matias Karhumaa.
8) WoL handling fixes in the phy layer, from Heiner Kallweit.
9) Fix deadlock in bonding, from Mahesh Bandewar.
10) Fill ttl inherit infor in vxlan driver, from Hangbin Liu.
11) Fix TX timeouts during netpoll, from Michael Chan.
12) RXRPC layer fixes from David Howells.
13) Another batch of ndo_poll_controller() removals to deal with
excessive resource consumption during load. From Eric Dumazet.
14) Fix a specific TIPC failure secnario, from LUU Duc Canh.
15) Really disable clocks in r8169 during suspend so that low
power states can actually be reached.
16) Fix SYN backlog lockdep issue in tcp and dccp, from Eric Dumazet.
17) Fix RCU locking in netpoll SKB send, which shows up in bonding,
from Dave Jones.
18) Fix TX stalls in r8169, from Heiner Kallweit.
19) Fix locksup in nfp due to control message storms, from Jakub
Kicinski.
20) Various rmnet bug fixes from Subash Abhinov Kasiviswanathan and
Sean Tranchetti.
21) Fix use after free in ip_cmsg_recv_dstaddr(), from Eric Dumazet."
* gitolite.kernel.org:/pub/scm/linux/kernel/git/davem/net: (122 commits)
ixgbe: check return value of napi_complete_done()
sctp: fix fall-through annotation
r8169: always autoneg on resume
ipv4: fix use-after-free in ip_cmsg_recv_dstaddr()
net: qualcomm: rmnet: Fix incorrect allocation flag in receive path
net: qualcomm: rmnet: Fix incorrect allocation flag in transmit
net: qualcomm: rmnet: Skip processing loopback packets
net: systemport: Fix wake-up interrupt race during resume
rtnl: limit IFLA_NUM_TX_QUEUES and IFLA_NUM_RX_QUEUES to 4096
bonding: fix warning message
inet: make sure to grab rcu_read_lock before using ireq->ireq_opt
nfp: avoid soft lockups under control message storm
declance: Fix continuation with the adapter identification message
net: fec: fix rare tx timeout
r8169: fix network stalls due to missing bit TXCFG_AUTO_FIFO
tun: napi flags belong to tfile
tun: initialize napi_mutex unconditionally
tun: remove unused parameters
bond: take rcu lock in netpoll_send_skb_on_dev
rtnetlink: Fail dump if target netnsid is invalid
...
Some time ago REQ_DISCARD was renamed into REQ_OP_DISCARD. Some comments
and documentation files were not updated however. Update these comments
and documentation files. See also commit 4e1b2d52a8 ("block, fs,
drivers: remove REQ_OP compat defs and related code").
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Philipp Reisner <philipp.reisner@linbit.com>
Cc: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Document support for the R-Car gen3 CMT types 0/1 bindings -- they seem
to be the same CMT types 0/1 as in the R-Car gen2 SoCs.
Also document R8A779{7|8}0 bindings as these are the R-Car gen3 SoCs for
which the initial support was done.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Allow specifying the physical address size limit for a new
VM via the kvm_type argument for the KVM_CREATE_VM ioctl. This
allows us to finalise the stage2 page table as early as possible
and hence perform the right checks on the memory slots
without complication. The size is encoded as Log2(PA_Size) in
bits[7:0] of the type field. For backward compatibility the
value 0 is reserved and implies 40bits. Also, lift the limit
of the IPA to host limit and allow lower IPA sizes (e.g, 32).
The userspace could check the extension KVM_CAP_ARM_VM_IPA_SIZE
for the availability of this feature. The cap check returns the
maximum limit for the physical address shift supported by the host.
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <cdall@kernel.org>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Change tool compiling process in order to be build using the same
mechanism used in other linux tools (e.g. iio, perf, etc). This will
allow in future the buildroot tool to build and integrate this tool in
a more expeditious way.
Update documentation accordingly.
Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Kishon Vijay Abraham I <kishon@ti.com>
The wait timeouts and delays are directly extracted from the NAND
timings and ->chip_delay is only used in legacy path, so let's move it
to the nand_legacy struct to make it clear.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Those hooks have been replaced by ->exec_op(). Move them to the
nand_legacy struct.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
We regularly have new NAND controller drivers that are making use of
fields/hooks that we want to get rid of but can't because of all the
legacy drivers that we might break if we do.
So, instead of removing those fields/hooks, let's move them to a
sub-struct which is clearly documented as deprecated.
We start with the ->IO_ADDR_{R,W] fields.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Let's make the raw NAND API consistent by patching all helpers to
take a nand_chip object instead of an mtd_info one.
Now is nand_release()'s turn.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Let's make the raw NAND API consistent by patching all helpers to take
a nand_chip object instead of an mtd_info one.
We start with nand_scan().
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Add the binding for the TLMM pinctrl block found in the SDM660 platform.
Signed-off-by: Craig Tatlor <ctatlor97@gmail.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add call to early_memtest() so that kernel compiled with
CONFIG_MEMTEST really perform memtest at startup when requested
via 'memtest' boot parameter.
Tested-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The tables in the ext4 readme are not particularly space efficient in
the text or html outputs, and they're totally broken in the pdf output.
Convert them into titled paragraphs so that they render more nicely.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
It turns out that the latex table formatters lay out table columns with
the exact proportional widths given in the table metadata, even if text
overflows outside the box. This was not caught during the initial
import because the HTML renderers are smart enough to fudge the table.
Fix the table column width formatting problems in the data structures
and algorithms documentation so that we don't have squashed columns.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The documentation build scripts won't build a pdf for the ext4
documentation unless explicitly called for, so ask for a separate
ext4.pdf to be generated with all the documentation.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Document the new pointer types in the verifier and how the pointer ID
tracking works to ensure that references which are taken are later
released.
Signed-off-by: Joe Stringer <joe@wand.net.nz>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Add selective auto-flow-control support for UniPhier serial driver.
Signed-off-by: Dai Okamura <okamura.dai@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The FIFO size of the UART devices is 64 on almost all UniPhier SoCs
with the exception Pro4TV SoC (MN2WS0235), which used 128 FIFO size.
However, Pro4TV SoC was never upstreamed, and out of production.
So, this property has never been used in a useful way.
Let's remove old unused code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
RZ/G1N (R8A7744) SoC also has the R-Car gen2 compatible SCIF, SCIFA,
SCIFB, and HSCIF ports, so document the SoC specific bindings.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the ISO7816 ioctl and associated accessors and data structure.
Drivers can then use this common implementation to handle ISO7816
(smart cards).
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
[ludovic.desroches@microchip.com: squash and rebase, removal of gpios, checkpatch fixes]
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add a "pps_4wire" file to serial ports in sysfs in case the kernel is
configured with CONFIG_PPS_CLIENT_LDISC. Writing 1 to the file enables
the use of CTS instead of DCD for PPS signal input. This is necessary
in case a serial port is not completely wired.
Though this affects PPS processing the patch is against the serial core
as the source of the serial port PPS event dispatching has to be
modified. Furthermore it should be possible to modify the source of
serial port PPS event dispatching before changing the line discipline.
Signed-off-by: Andreas Steinmetz <ast@domdv.de>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Tested-by: Steve Sakoman <steve@sakoman.com>
Tested-by: Eric Gallimore <egallimore@ucsd.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The platform firmware "location" data is used to find port peer
relationships. But firmware is an unreliable source, and there are
real world examples of errors leading to missing or wrong peer
relationships. Debugging this is currently hard.
Exporting the location attribute makes it easier to spot mismatches
between the firmware data and the real world.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The new scheme is required just to support legacy low and full-speed
devices. For high speed devices, it will slower the enumeration speed.
So in this patch we try the "old" enumeration scheme first for high speed
devices, and this is what Windows does since Windows 8.
Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Document r8a7744 xhci support. The driver will use the fallback
compatible string "renesas,rcar-gen2-xhci", therefore no driver
change is needed.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Document support for RZ/G1N (R8A7744) SoC.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The "pciserial" earlyprintk variant helps much on many modern x86
platforms, but unfortunately there are still some platforms with PCI
UART devices which have the wrong PCI class code. In that case, the
current class code check does not allow for them to be used for logging.
Add a sub-option "force" which overrides the class code check and thus
the use of such device can be enforced.
[ bp: massage formulations. ]
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Stuart R . Anderson" <stuart.r.anderson@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H Peter Anvin <hpa@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thymo van Beers <thymovanbeers@gmail.com>
Cc: alan@linux.intel.com
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/20181002164921.25833-1-feng.tang@intel.com
- support for multi-link streaming
- updates in intel driver for multi-link streaming
- Update Vinod's email
- Fix rst formatting
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Merge tag 'soundwire-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next
Vinod writes:
soundwire updates for 4.20-rc1
- support for multi-link streaming
- updates in intel driver for multi-link streaming
- Update Vinod's email
- Fix rst formatting
* tag 'soundwire-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
Documentation: soundwire: fix stream.rst markup warnings
soundwire: intel: Remove duplicate assignment
MAINTAINERS: Update Vinod's email
soundwire: intel: Fix uninitialized adev deref
soundwire: intel: Add pre/post bank switch ops
soundwire: keep track of Masters in a stream
soundwire: Add support for multi link bank switch
soundwire: Handle multiple master instances in a stream
soundwire: Add support to lock across bus instances
soundwire: Initialize completion for defer messages
Documentation: soundwire: Add documentation for multi link
This patch adds binding for r8a7744 (RZ/G1N).
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Document support for RZ/A2
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Remove references to deprecated features like NMI sourcing
and obsoleted module parameters.
Add details concerning new module parameter pretimeout and tips
to programming it.
Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Describe the System Error Interrupt (SEI) controller. It aggregates two
types of interrupts, wired and MSIs from respectively the AP and the
CPs, into a single SPI interrupt.
Suggested-by: Haim Boot <hayim@marvell.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Change the documentation to reflect the new bindings used for Marvell
ICU. This involves describing each interrupt group as a subnode of the
ICU node. Each of them having their own compatible.
The DT binding documentation still documents the legacy binding, where
there was a single node with no subnode.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
ICU size in CP110 is not 0x10 but at least 0x440 bytes long (from the
specification).
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
The Renesas RZ/N1 device family PINCTRL node description.
Based on a patch originally written by Michel Pollet at Renesas.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
mvebu soc for 4.20 (part 1)
- use dt_fixup to provide fallback for enable-method for Armada XP
- document the marvell,prestera compatible string
- update Thomas Petazzoni email in MAINTAINERS file
* tag 'mvebu-soc-4.20-1' of git://git.infradead.org/linux-mvebu:
dt-bindings: marvell,prestera: Add common compatible string
MAINTAINERS: replace free-electrons.com by bootlin.com for Thomas Petazzoni
ARM: mvebu: use dt_fixup to provide fallback for enable-method
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Document the R-Car E3 (R8A77990) SoC in the R-Car PCIe bindings.
Signed-off-by: Tho Vu <tho.vu.wh@rvc.renesas.com>
Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Phil Edworthy <phil.edworthy@renesas.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: Simon Horman <horms+renesas@verge.net.au>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-renesas-soc@vger.kernel.org
- New board support: Engicam's i.Core MX6 CPU module v1.5; ConnectCore
6UL Single Board Computer (SBC) Pro; i.MX6 ULZ based EVK board.
- Add Add SFF interface support for vf610-zii board.
- Disable unneeded devices like VPU and internal watchdog for imx51-zii
boards.
- Add 'no-sdio' and 'no-sd' property for vf610-zii-cfu1 board.
- Improve i.MX6 SLL GPIO support by adding gpio-ranges property and
clocks information.
- Update iomux header for i.MX7 Solo and i.MX6 ULL.
- Enable GPIO buttons as wakeup source for imx7d-sdb and imx6sx-sdb.
- Add GPIO keys and egalax touch screen support for imx6qdl-sabreauto.
- Switch to use SPDX-License-Identifier for more boards - vf610-twr,
imx7s-warp, Engicam boards.
- Add device tree bindings of 'fsl,pmic-stby-poweroff' property and add
the support for i.MX6 RIoTboard.
- DTC has new checks for SPI buses which will be landed on 4.20.
A patch from Rob to fix those 100+ warnings on i.MX boards. (Thanks!)
- Switch i.MX7 device tree to use updated coresight binding for
hardware ports.
- Misc small or random update and cleanup.
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Merge tag 'imx-dt-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt
i.MX device tree update for 4.20:
- New board support: Engicam's i.Core MX6 CPU module v1.5; ConnectCore
6UL Single Board Computer (SBC) Pro; i.MX6 ULZ based EVK board.
- Add Add SFF interface support for vf610-zii board.
- Disable unneeded devices like VPU and internal watchdog for imx51-zii
boards.
- Add 'no-sdio' and 'no-sd' property for vf610-zii-cfu1 board.
- Improve i.MX6 SLL GPIO support by adding gpio-ranges property and
clocks information.
- Update iomux header for i.MX7 Solo and i.MX6 ULL.
- Enable GPIO buttons as wakeup source for imx7d-sdb and imx6sx-sdb.
- Add GPIO keys and egalax touch screen support for imx6qdl-sabreauto.
- Switch to use SPDX-License-Identifier for more boards - vf610-twr,
imx7s-warp, Engicam boards.
- Add device tree bindings of 'fsl,pmic-stby-poweroff' property and add
the support for i.MX6 RIoTboard.
- DTC has new checks for SPI buses which will be landed on 4.20.
A patch from Rob to fix those 100+ warnings on i.MX boards. (Thanks!)
- Switch i.MX7 device tree to use updated coresight binding for
hardware ports.
- Misc small or random update and cleanup.
* tag 'imx-dt-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (50 commits)
ARM: dts: imx: add i.mx6ulz and i.mx6ulz 14x14 evk support
dt-bindings: arm: add compatible for i.MX6ULZ 14x14 EVK board
ARM: dts: imx53-ppd: Remove 'num-chipselects' property
ARM: dts: vf610-twr: Switch to SPDX identifier
ARM: dts: vf: Switch to SPDX identifier
ARM: dts: imx6qdl-zii-rdu2: Disable the internal RTC
ARM: dts: imx51-zii-rdu1: Fix the rtc compatible string
ARM: dts: imx6ul: use nvmem-cells for cpu speed grading
ARM: dts: imx: Fix SPI bus warnings
ARM: dts: imx7: Update coresight binding for hardware ports
ARM: dts: vf610-zii-cfu1: Pass the 'no-sd' property
ARM: dts: vf610-zii-cfu1: Pass the 'no-sdio' property
ARM: dts: imx51-zii-scu2-mezz: Disable the internal watchdog
ARM: dts: imx51-zii-scu2-mezz: Disable VPU
ARM: dts: imx51-zii-scu3-esb: Disable VPU
ARM: dts: imx51: Add label for VPU node
ARM: dts: imx6ull: update vdd_soc voltage for 900MHz operating point
ARM: dts: imx6ul: Add DTS for ConnectCore 6UL SBC Pro
ARM: dts: imx6: RIoTboard provide standby on power off option
dt-bindings: imx6q-clock: add new fsl,pmic-stby-poweroff property
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Document support for the Interrupt Controller for External Devices
(INTC-EX) in the Renesas E3 (r8a77990) SoC.
No driver update is needed.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Fix incorrect line number in example output
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/1538391663-54524-1-git-send-email-andrew.murray@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Amend the changes in commit:
1f03e8d291 ("locking/barriers: Replace smp_cond_acquire() with smp_cond_load_acquire()")
... by updating the documentation accordingly.
Also remove some obsolete information related to the implementation.
Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Akira Yokosawa <akiyks@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Daniel Lustig <dlustig@nvidia.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jade Alglave <j.alglave@ucl.ac.uk>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luc Maranget <luc.maranget@inria.fr>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-arch@vger.kernel.org
Cc: parri.andrea@gmail.com
Link: http://lkml.kernel.org/r/20180926182920.27644-5-paulmck@linux.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This is our usual H3/H5 pull request
The most notable changes are:
- the video decoding / encoding unit is finally enabled on the H3
- Mali support for the H5
- New boards: BananaPi M2+ v1.2, Orange Pi Zero Plus 2 H3 support
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Merge tag 'sunxi-h3-h5-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/dt
Allwinner H3 and H5 DT additions for 4.20
This is our usual H3/H5 pull request
The most notable changes are:
- the video decoding / encoding unit is finally enabled on the H3
- Mali support for the H5
- New boards: BananaPi M2+ v1.2, Orange Pi Zero Plus 2 H3 support
* tag 'sunxi-h3-h5-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: dts: sunxi: h3-h5: Add Bananapi M2+ v1.2 device trees
ARM: dts: sun8i-h3: Add Video Engine and reserved memory nodes
arm64: dts: allwinner: h5: Add device tree for Bananapi M2 Plus H5
ARM: dts: sun8i: h3: Split out non-SoC-specific parts of Bananapi M2 Plus
ARM: dts: sun8i: h3: bpi-m2-plus: Fix address for external RGMII Ethernet PHY
ARM: dts: sun8i: h3-h5: ir register size should be the whole memory block
arm64: dts: allwinner: h5: Add device node for Mali-450 GPU
ARM: dts: sun8i: Add initial Orangepi Zero Plus 2 H3 support
nvmem: sunxi-sid: add support for H5's SID controller
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull v4.20 RCU changes from Paul E. McKenney:
- Documentation updates, including some good-eye catches from
Joel Fernandes.
- SRCU updates, most notably changes enabling call_srcu() to be
invoked very early in the boot sequence.
- Torture-test updates, including some preliminary work towards
making rcutorture better able to find problems that result in
insufficient grace-period forward progress.
- Consolidate the RCU-bh, RCU-preempt, and RCU-sched flavors into
a single flavor similar to RCU-sched in !PREEMPT kernels and
into a single flavor similar to RCU-preempt (but also waiting
on preempt-disabled sequences of code) in PREEMPT kernels. This
branch also includes a refactoring of rcu_{nmi,irq}_{enter,exit}()
from Byungchul Park.
- Now that there is only one RCU flavor in any given running kernel,
the many "rsp" pointers are no longer required, and this cleanup
series removes them.
- This branch carries out additional cleanups made possible by
the RCU flavor consolidation, including inlining how-trivial
functions, updating comments and definitions, and removing
now-unneeded rcutorture scenarios.
- Initial changes to RCU to better promote forward progress of
grace periods, including fixing a bug found by Marius Hillenbrand
and David Woodhouse, with the fix suggested by Peter Zijlstra.
- Now that there is only one flavor of RCU in any running kernel,
there is also only on rcu_data structure per CPU. This means
that the rcu_dynticks structure can be merged into the rcu_data
structure, a task taken on by this branch. This branch also
contains a -rt-related fix from Mike Galbraith.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Implements counter freezing for Arch Perfmon v4 (Skylake and
newer). This allows to speed up the PMI handler by avoiding
unnecessary MSR writes and make it more accurate.
The Arch Perfmon v4 PMI handler is substantially different than
the older PMI handler.
Differences to the old handler:
- It relies on counter freezing, which eliminates several MSR
writes from the PMI handler and lowers the overhead significantly.
It makes the PMI handler more accurate, as all counters get
frozen atomically as soon as any counter overflows. So there is
much less counting of the PMI handler itself.
With the freezing we don't need to disable or enable counters or
PEBS. Only BTS which does not support auto-freezing still needs to
be explicitly managed.
- The PMU acking is done at the end, not the beginning.
This makes it possible to avoid manual enabling/disabling
of the PMU, instead we just rely on the freezing/acking.
- The APIC is acked before reenabling the PMU, which avoids
problems with LBRs occasionally not getting unfreezed on Skylake.
- Looping is only needed to workaround a corner case which several PMIs
are very close to each other. For common cases, the counters are freezed
during PMI handler. It doesn't need to do re-check.
This patch:
- Adds code to enable v4 counter freezing
- Fork <=v3 and >=v4 PMI handlers into separate functions.
- Add kernel parameter to disable counter freezing. It took some time to
debug counter freezing, so in case there are new problems we added an
option to turn it off. Would not expect this to be used until there
are new bugs.
- Only for big core. The patch for small core will be posted later
separately.
Performance:
When profiling a kernel build on Kabylake with different perf options,
measuring the length of all NMI handlers using the nmi handler
trace point:
V3 is without counter freezing.
V4 is with counter freezing.
The value is the average cost of the PMI handler.
(lower is better)
perf options ` V3(ns) V4(ns) delta
-c 100000 1088 894 -18%
-g -c 100000 1862 1646 -12%
--call-graph lbr -c 100000 3649 3367 -8%
--c.g. dwarf -c 100000 2248 1982 -12%
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: acme@kernel.org
Link: http://lkml.kernel.org/r/1533712328-2834-2-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
* Refactor of SCM compatibles and clock requirements
* SMEM cleanup
* Add LLCC EDAC driver
* Fixes for GENI clocks and macros
* Fix includes for llcc-slice and smem
* String overflow fixes for APR and wcnss_ctrl
* Fixup for COMPILE_TEST of qcom driver Kconfigs
* Cleanup of Kconfig depends of rpmh, smd_rpm, smsm, and smp2p
* Add SCM dependencies to SPM and rmtfs-mem
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Merge tag 'qcom-drivers-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/drivers
Qualcomm ARM Based Driver Updates for v4.20
* Refactor of SCM compatibles and clock requirements
* SMEM cleanup
* Add LLCC EDAC driver
* Fixes for GENI clocks and macros
* Fix includes for llcc-slice and smem
* String overflow fixes for APR and wcnss_ctrl
* Fixup for COMPILE_TEST of qcom driver Kconfigs
* Cleanup of Kconfig depends of rpmh, smd_rpm, smsm, and smp2p
* Add SCM dependencies to SPM and rmtfs-mem
* tag 'qcom-drivers-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux: (38 commits)
soc: qcom: geni: geni_se_clk_freq_match() should always accept multiples
soc: qcom: geni: Don't ignore clk_round_rate() errors in geni_se_clk_tbl_get()
soc: qcom: geni: Make version macros simpler
dt-bindings: firmware: scm: Add MSM8998 and SDM845
firmware: qcom: scm: Refactor clock handling
dt-bindings: firmware: scm: Refactor compatibles and clocks
soc: qcom: smem: a few last cleanups
soc: qcom: smem: verify partition host ids match
soc: qcom: smem: small change in global entry loop
soc: qcom: smem: verify partition offset_free_uncached
soc: qcom: smem: verify partition header size
soc: qcom: smem: introduce qcom_smem_partition_header()
soc: qcom: smem: require order of host ids to match
soc: qcom: smem: verify both host ids in partition header
soc: qcom: smem: small refactor in qcom_smem_enumerate_partitions()
soc: qcom: smem: always ignore partitions with 0 offset or size
soc: qcom: smem: initialize region struct only when successful
soc: qcom: smem: rename variable in qcom_smem_get_global()
drivers: qcom: rpmh-rsc: clear wait_for_compl after use
soc: qcom: rmtfs-mem: Validate that scm is available
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The SPS power domain driver is extended for S900 SoC.
This required merging a topic branch for the new bindings header.
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Merge tag 'actions-drivers+s900-sps-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/afaerber/linux-actions into next/drivers
Actions Semi SoC drivers for v4.20 #2
The SPS power domain driver is extended for S900 SoC.
This required merging a topic branch for the new bindings header.
* tag 'actions-drivers+s900-sps-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/afaerber/linux-actions:
soc: actions: sps: Add S900 power domains
dt-bindings: power: Add Actions Semi S900 SPS
soc: actions: Update SPS help text for S700
soc: actions: Convert to SPDX license identifiers
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The H6 is now supported in our SRAM driver bindings, and we have a small
Makefile change for the SRAM driver to build it without building the
ARCH_SUNXI architecture, especially relevant for the COMPILE_TEST case.
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Merge tag 'sunxi-drivers-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into next/drivers
Allwinner drivers changes for 4.20
The H6 is now supported in our SRAM driver bindings, and we have a small
Makefile change for the SRAM driver to build it without building the
ARCH_SUNXI architecture, especially relevant for the COMPILE_TEST case.
* tag 'sunxi-drivers-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
dt-bindings: sunxi-sram: add binding for Allwinner H6 SRAM C
drivers: soc: Allow building the sunxi driver without ARCH_SUNXI
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
