The sequence of cpu_enter_lowpower() for Cortex-A15 is
different from the sequence for Cortex-A9. This patch
implements cpu_enter_lowpower() for EXYNOS5 SoC which
has Cortex-A15 cores.
Basded on original patch has been submitted by Changhwan Youn
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
[kgene.kim@samsung.com: use flush_cache_louis() instead of
flush_cache_all() as per Lorenzo and Santosh's suggestion]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
another one fixing the check of a GPIO for USB host overcurrent.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iQEcBAABAgAGBQJQphQoAAoJEAf03oE53VmQDs0H/1SCQfdQY8iLNs+3WGYhGngG
vMID1KWKmX6URrppi2gklr8weUoqYIVIA8I7+hLvr33tGrmSPRDrGV6vI5m0wAiJ
nkDNAkcGJ6dh/hhotakjqqKLkNtD1xDdErHMOO77fAK811gQj1sVp+8S+UwDQUf7
O1bbMpMar2/3c6cLb27GE7M4FrLwjmCnQxyQWyBrckPhPMzYNw3MbcW3CINXSYBY
q/FtFX7nsl2cfPsz8M2KCB43SKZT/bizkPnnjA5QQDhUPlsyTQWdS2z1RAwP2SZn
3WXoL4t4bNo1Ynusz416pB3djHqJwhxxWYxdMD91nIUXmmXkvIg+fWsdaNmaBI0=
=wlxI
-----END PGP SIGNATURE-----
Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes
From Nicolas Ferre <nicolas.ferre@atmel.com>:
Two little fixes, one related to the move to sparse irq and
another one fixing the check of a GPIO for USB host overcurrent.
* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
ARM: at91/usbh: fix overcurrent gpio setup
ARM: at91/AT91SAM9G45: fix crypto peripherals irq issue due to sparse irq support
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This patch sets HPM (Host power mask bit) to bit 16 according to i.MX
Reference Manual. Falsely it was set to bit 8, but this controls pull-up
Impedance.
Reported-by: Michael Burkey <mdburkey@gmail.com>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Acked-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The error-valued pointer clk is used for the arg of kfree, it should be
kfree(gate) if clk_register() return ERR_PTR().
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Use gpio_is_valid also for overcurrent pins (which are currently
negative in many board files).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Spare irq support introduced by commit 8fe82a5 (ARM: at91: sparse irq support)
involves to add the NR_IRQS_LEGACY offset to irq number.
Signed-off-by: Nicolas Royer <nicolas@eukrea.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Eric Bénard <eric@eukrea.com>
Tested-by: Eric Bénard <eric@eukrea.com>
Cc: stable@vger.kernel.org # 3.6
Since commit edc88ceb0 (ARM: be really quiet when building with 'make -s') the
following output is generated when building a kernel for ARM:
echo ' Kernel: arch/arm/boot/Image is ready'
Kernel: arch/arm/boot/Image is ready
Building modules, stage 2.
echo ' Kernel: arch/arm/boot/zImage is ready'
Kernel: arch/arm/boot/zImage is ready
As per Documentation/kbuild/makefiles.txt the correct way of using kecho is
'@$(kecho)'.
Make this change so no more unwanted 'echo' messages are displayed.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Kevin Hilman and Paul Walmsley.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=pyxl
-----END PGP SIGNATURE-----
Merge tag 'omap-for-v3.7-rc4/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren <tony@atomide.com>:
Minor OMAP PM and hwmod fixes for v3.7-rc series via
Kevin Hilman and Paul Walmsley.
* tag 'omap-for-v3.7-rc4/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP4: PM: fix regulator name for VDD_MPU
ARM: OMAP4: hwmod data: do not enable or reset the McPDM during kernel init
ARM: OMAP2+: hwmod: add flag to prevent hwmod code from touching IP block during init
ARM: OMAP: hwmod: wait for sysreset complete after enabling hwmod
ARM: OMAP2+: clockdomain: Fix OMAP4 ISS clk domain to support only SWSUP
ARM: OMAP2+: PM: add missing newline to VC warning message
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
on omap4 again. Although it's getting rather late for these
changes for the -rc cycle, it is important as many devices
are using MUSB for charging and connectivity.
With the USB PHY changes, MUSB started using the newly added
drivers/usb/phy/omap-usb2.c driver introduced by commit
657b306a (usb: phy: add a new driver for omap usb2 phy)
that is using the newly introduced drivers/bus/omap-ocp2scp.c
introduced by commit 26a84b3e (drivers: bus: add a new driver
for omap-ocp2scp).
These changes allowed dropping a lot of PHY related code from
arch/arm/mach-omap2/omap_phy_internal.c and have it live in
the device driver like it should with commit c9e4412a (arm: omap:
phy: remove unused functions from omap-phy-internal.c).
However, MUSB on omap4 broke with these changes for legacy
platform data boot, and now only works with device tree for
omap4. Unfortunately we are still few critical bindings away
from being able to make omap4 usbale with device tree.
Fix the regression properly by adding platform data support
to the ocp2scp driver so we can avoid adding back the driver
code to arch/arm/mach-omap2.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=bbq5
-----END PGP SIGNATURE-----
Merge tag 'omap-for-v3.7-rc4/musb-regression-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren <tony@atomide.com>:
This series fixes an annoying regression to make MUSB working
on omap4 again. Although it's getting rather late for these
changes for the -rc cycle, it is important as many devices
are using MUSB for charging and connectivity.
With the USB PHY changes, MUSB started using the newly added
drivers/usb/phy/omap-usb2.c driver introduced by commit
657b306a (usb: phy: add a new driver for omap usb2 phy)
that is using the newly introduced drivers/bus/omap-ocp2scp.c
introduced by commit 26a84b3e (drivers: bus: add a new driver
for omap-ocp2scp).
These changes allowed dropping a lot of PHY related code from
arch/arm/mach-omap2/omap_phy_internal.c and have it live in
the device driver like it should with commit c9e4412a (arm: omap:
phy: remove unused functions from omap-phy-internal.c).
However, MUSB on omap4 broke with these changes for legacy
platform data boot, and now only works with device tree for
omap4. Unfortunately we are still few critical bindings away
from being able to make omap4 usbale with device tree.
Fix the regression properly by adding platform data support
to the ocp2scp driver so we can avoid adding back the driver
code to arch/arm/mach-omap2.
* tag 'omap-for-v3.7-rc4/musb-regression-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: ocp2scp: create omap device for ocp2scp
ARM: OMAP4: add _dev_attr_ to ocp2scp for representing usb_phy
drivers: bus: ocp2scp: add pdata support
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* Fix compile issues on ARM.
* Fix hypercall fallback code for old hypervisors.
* Print out which HVM parameter failed if it fails.
* Fix idle notifier call after irq_enter.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQEcBAABAgAGBQJQnQdGAAoJEFjIrFwIi8fJPBAIAMX1HRx3udqhv7fziynZvFTb
hj47XYIJHOK7P4fK7vZoSNgMHjL6LW5cUqC8VN67G3zUSkX9JYFsPBj6v4bWn+rG
b9CS+MW7hS80LGbbqkh1F+YSEfZ863RlF9PPX2acaHTw49MlIgIqwhxIo6hy+Nm6
thu6SlbEIJkSUdhbYMOAmy5aH/3+UuuQg+oq3P7mzV8fZjEihnrrF0NlT4wOZK1o
gsfrKYKJLVT526W9PF/L23/A/MCHMpvjNStpaDLOGNjV9sBMpJI8JRax6+657+q1
0kXvN5mAwTKWOaXBl4LEC9R8n1IKB91TgOY6HJAcXkb1eoP5KAeNSmU8RbsZ2T0=
=XZ+0
-----END PGP SIGNATURE-----
Merge tag 'stable/for-linus-3.7-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull Xen fixes from Konrad Rzeszutek Wilk:
"There are three ARM compile fixes (we forgot to export certain
functions and if the drivers are built as an module - we go belly-up).
There is also an mismatch of irq_enter() / exit_idle() calls sequence
which were fixed some time ago in other piece of codes, but failed to
appear in the Xen code.
Lastly a fix for to help in the field with troubleshooting in case we
cannot get the appropriate parameter and also fallback code when
working with very old hypervisors."
Bug-fixes:
- Fix compile issues on ARM.
- Fix hypercall fallback code for old hypervisors.
- Print out which HVM parameter failed if it fails.
- Fix idle notifier call after irq_enter.
* tag 'stable/for-linus-3.7-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/arm: Fix compile errors when drivers are compiled as modules (export more).
xen/arm: Fix compile errors when drivers are compiled as modules.
xen/generic: Disable fallback build on ARM.
xen/events: fix RCU warning, or Call idle notifier after irq_enter()
xen/hvm: If we fail to fetch an HVM parameter print out which flag it is.
xen/hypercall: fix hypercall fallback code for very old hypervisors
The commit 911dec0db4
"xen/arm: Fix compile errors when drivers are compiled as modules." exports
the neccessary functions. But to guard ourselves against out-of-tree modules
and future drivers hitting this, lets export all of the relevant
hypercalls.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Platfrom device for ocp2scp is created using omap_device_build in
devices file. This is used for both omap4(musb) and omap5(dwc3).
This is needed to fix MUSB regression caused by commit c9e4412a
(arm: omap: phy: remove unused functions from omap-phy-internal.c)
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[tony@atomide.com: updated comments for regression info]
Signed-off-by: Tony Lindgren <tony@atomide.com>
In order to reflect devices(usb_phy) attached to ocp2scp bus, ocp2scp
is assigned a device attribute to represent the attached devices.
This is needed to fix MUSB regression caused by commit c9e4412a
(arm: omap: phy: remove unused functions from omap-phy-internal.c)
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
[tony@atomide.com: updated comments for regression info]
Signed-off-by: Tony Lindgren <tony@atomide.com>
We end up with:
ERROR: "HYPERVISOR_event_channel_op" [drivers/xen/xen-gntdev.ko] undefined!
ERROR: "privcmd_call" [drivers/xen/xen-privcmd.ko] undefined!
ERROR: "HYPERVISOR_grant_table_op" [drivers/net/xen-netback/xen-netback.ko] undefined!
and this patch exports said function (which is implemented in hypercall.S).
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Pull arm fixes from Russell King:
"Not much here again.
The two most notable things here are the sched_clock() fix, which was
causing problems with the scheduling of threaded IRQs after a suspend
event, and the vfp fix, which afaik has only been seen on some older
OMAP boards. Nevertheless, both are fairly important fixes."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7569/1: mm: uninitialized warning corrections
ARM: 7567/1: io: avoid GCC's offsettable addressing modes for halfword accesses
ARM: 7566/1: vfp: fix save and restore when running on pre-VFPv3 and CONFIG_VFPv3 set
ARM: 7565/1: sched: stop sched_clock() during suspend
From Stephen Warren:
* 'for-3.7/fixes-for-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
ARM: dt: tegra: fix length of pad control and mux registers
In some cases, an interrupt can occur and prevent cause failure to enter
wfi. This causes reset to hang. Retrying the wfi should be enough to
prevent reset from hanging.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
From Haojian Zhuang:
* 'upload/fix' of git://github.com/hzhuang1/linux:
ARM: pxa/spitz_pm: Fix hang when resuming from STR
ARM: pxa: hx4700: Fix backlight PWM device number
commit 24d7b40a (ARM: OMAP2+: PM: MPU DVFS: use generic CPU device for
MPU-SS) updated the regulator name used for the MPU regulator, but only
updated OMAP3, not OMAP4. Fix the OMAP4 name as well, otherwise CPUfreq
fails to find the MPU regulator.
Signed-off-by: Kevin Hilman <khilman@ti.com>
The variables here are really not used uninitialized.
arch/arm/mm/alignment.c: In function 'do_alignment':
arch/arm/mm/alignment.c:327:15: warning: 'offset.un' may be used uninitialized in this function [-Wmaybe-uninitialized]
arch/arm/mm/alignment.c:748:21: note: 'offset.un' was declared here
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Resolve this kernel boot message:
omap_hwmod: mcpdm: cannot be enabled for reset (3)
The McPDM on OMAP4 can only receive its functional clock from an
off-chip source. This source is not guaranteed to be present on the
board, and when present, it is controlled by I2C. This would
introduce a board dependency to the early hwmod code which it was not
designed to handle. Also, neither the driver for this off-chip clock
provider nor the I2C code is available early in boot when the hwmod
code is attempting to enable and reset IP blocks. This effectively
makes it impossible to enable and reset this device during hwmod init.
At its core, this patch is a workaround for an OMAP hardware problem.
It should be possible to configure the OMAP to provide any IP block's
functional clock from an on-chip source. (This is true for almost
every IP block on the chip. As far as I know, McPDM is the only
exception.) If the kernel cannot reset and configure IP blocks, it
cannot guarantee a sane SoC state. Relying on an optional off-chip
clock also creates a board dependency which is beyond the scope of the
early hwmod code.
This patch works around the issue by marking the McPDM hwmod record
with the HWMOD_EXT_OPT_MAIN_CLK flag. This prevents the hwmod
code from touching the device early during boot.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Péter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Add HWMOD_EXT_OPT_MAIN_CLK flag to indicate that this IP block is
dependent on an off-chip functional clock that is not guaranteed to be
present during initialization. IP blocks marked with this flag are
left in the INITIALIZED state during kernel init.
This is a workaround for a hardware problem. It should be possible to
guarantee that at least one clock source will be present and active
for any IP block's main functional clock. This ensures that the hwmod
code can enable and reset the IP block. Resetting the IP block during
kernel init prevents any bogus bootloader, ROM code, or previous OS
configuration from affecting the kernel. Hopefully a clock
multiplexer can be added on future SoCs.
N.B., at some point in the future, it should be possible to query the
clock framework for this type of information. Then this flag should
no longer be needed.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
The reg property contains <base length> not <base last_offset>. Fix
the length values to be length not last_offset.
Cc: stable@vger.kernel.org
Signed-off-by: Pritesh Raithatha <praithatha@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Use the new __HVC macro in hypercall.S.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
When waking up from off-mode, some IP blocks are reset automatically by
hardware. For this reason, software must wait until the reset has
completed before attempting to access the IP block.
This patch fixes for example the bug introduced by commit
6c31b2150f ("mmc: omap_hsmmc: remove access
to SYSCONFIG register"), in which the MMC IP block is reset during
off-mode entry, but the code expects the module to be already available
during the execution of context restore.
This version includes a fix from Kevin Hilman <khilman@ti.com> for
GPIO problems on the 37xx EVM - thanks Kevin.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Venkatraman S <svenkatr@ti.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
[paul@pwsan.com: moved softreset wait code into separate function; call
from top of _enable_sysc() rather than the bottom; include fix from Kevin
Hilman for GPIO sluggishness]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Since CAM domain (ISS) has no module wake-up dependency
with any other clock domain of the device and the dynamic
dependency from L3_main_2 is always disabled, the domain
needs to be in force wakeup in order to be able to access
it for configure (sysconfig) it or use it.
Also since there is no clock in the domain managed automatically
by the hardware, there is no use to configure automatic
clock domain transition. SW should keep the SW_WKUP domain
transition as long as a module in the domain is required to
be functional.
Signed-off-by: Miguel Vadillo <vadillo@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Using the 'o' memory constraint in inline assembly can result in GCC
generating invalid immediate offsets for memory access instructions with
reduced addressing capabilities (i.e. smaller than 12-bit immediate
offsets):
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54983
As there is no constraint to specify the exact addressing mode we need,
fallback to using 'Q' exclusively for halfword I/O accesses. This may
emit an additional add instruction (using an extra register) in order
to construct the address but it will always be accepted by GAS.
Reported-by: Bastian Hecht <hechtb@googlemail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
After commit 846a136881 ("ARM: vfp: fix
saving d16-d31 vfp registers on v6+ kernels"), the OMAP 2430SDP board
started crashing during boot with omap2plus_defconfig:
[ 3.875122] mmcblk0: mmc0:e624 SD04G 3.69 GiB
[ 3.915954] mmcblk0: p1
[ 4.086639] Internal error: Oops - undefined instruction: 0 [#1] SMP ARM
[ 4.093719] Modules linked in:
[ 4.096954] CPU: 0 Not tainted (3.6.0-02232-g759e00b #570)
[ 4.103149] PC is at vfp_reload_hw+0x1c/0x44
[ 4.107666] LR is at __und_usr_fault_32+0x0/0x8
It turns out that the context save/restore fix unmasked a latent bug
in commit 5aaf254409 ("ARM: 6203/1: Make
VFPv3 usable on ARMv6"). When CONFIG_VFPv3 is set, but the kernel is
booted on a pre-VFPv3 core, the code attempts to save and restore the
d16-d31 VFP registers. These are only present on non-D16 VFPv3+, so
this results in an undefined instruction exception. The code didn't
crash before commit 846a136 because the save and restore code was
only touching d0-d15, present on all VFP.
Fix by implementing a request from Russell King to add a new HWCAP
flag that affirmatively indicates the presence of the d16-d31
registers:
http://marc.info/?l=linux-arm-kernel&m=135013547905283&w=2
and some feedback from Måns to clarify the name of the HWCAP flag.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Martin <dave.martin@linaro.org>
Cc: Måns Rullgård <mans.rullgard@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The scheduler imposes a requirement to sched_clock()
which is to stop the clock during suspend, if we don't
do that any RT thread will be rescheduled in the future
which might cause any sort of problems.
This became an issue on OMAP when we converted omap-i2c.c
to use threaded IRQs, it turned out that depending on how
much time we spent on suspend, the I2C IRQ thread would
end up being rescheduled so far in the future that I2C
transfers would timeout and, because omap_hsmmc depends
on an I2C-connected device to detect if an MMC card is
inserted in the slot, our rootfs would just vanish.
arch/arm/kernel/sched_clock.c already had an optional
implementation (sched_clock_needs_suspend()) which would
handle scheduler's requirement properly, what this patch
does is simply to make that implementation non-optional.
Note that this has the side-effect that printk timings
won't reflect the actual time spent on suspend so other
methods to measure that will have to be used.
This has been tested with beagleboard XM (OMAP3630) and
pandaboard rev A3 (OMAP4430). Suspend to RAM is now working
after this patch.
Thanks to Kevin Hilman for helping out with debugging.
Acked-by: Kevin Hilman <khilman@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Bug fixes for a number of ARM platforms, mostly OMAP, imx and at91.
These come a little later than I had hoped but unfortunately we
had a few of these patches cause regressions themselves and had to
work out how to deal with those in the meantime.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=IDdm
-----END PGP SIGNATURE-----
Merge tag 'fixes-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc fixes from Arnd Bergmann:
"Bug fixes for a number of ARM platforms, mostly OMAP, imx and at91.
These come a little later than I had hoped but unfortunately we had a
few of these patches cause regressions themselves and had to work out
how to deal with those in the meantime."
* tag 'fixes-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits)
Revert "ARM i.MX25: Fix PWM per clock lookups"
ARM: versatile: fix versatile_defconfig
ARM: mvebu: update defconfig with 3.7 changes
ARM: at91: fix at91x40 build
ARM: socfpga: Fix socfpga compilation with early_printk() enabled
ARM: SPEAr: Remove unused empty files
MAINTAINERS: Add arm-soc tree entry
ARM: dts: mxs: add the "clock-names" for gpmi-nand
ARM: ux500: Correct SDI5 address and add some format changes
ARM: ux500: Specify AMBA Primecell IDs for Nomadik I2C in DT
ARM: ux500: Fix build error relating to IRQCHIP_SKIP_SET_WAKE
ARM: at91: drop duplicated config SOC_AT91SAM9 entry
ARM: at91/i2c: change id to let i2c-at91 work
ARM: at91/i2c: change id to let i2c-gpio work
ARM: at91/dts: at91sam9g20ek_common: Fix typos in buttons labels.
ARM: at91: fix external interrupt specification in board code
ARM: at91: fix external interrupts in non-DT case
ARM: at91: at91sam9g10: fix SOC type detection
ARM: at91/tc: fix typo in the DT document
ARM: AM33XX: Fix configuration of dmtimer parent clock by dmtimer driverDate:Wed, 17 Oct 2012 13:55:55 -0500
...
Devices that use spitz_pm.c will fail to resume
from STR (Suspend To Ram) when the charger plug is inserted
or removed when a device is in STR mode. The culprit is
a misconfigured gpio line - GPIO18. GPIO18 should be configured as a
regular GPIO input but it gets configured as an alternate function
GPIO18_RDY. And then later in postsuspend() it gets configured as
a regular GPIO18 input line.
Fix this by removing the GPIO18_RDY configuration so that GPIO18
only gets configured as a regular gpio input.
Signed-off-by: Marko Katic <dromede@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Recent changes to PXA PWM support changed the PXA27X PWM device
numbering scheme.
The linux-3.5 PXA PWM driver followed the hardware numbering scheme for
the 4 PWMs, while the linux-3.6-rc1 PXA PWM driver has adopted a linear
numbering scheme:
Address Hardware 3.5 pwm_id 3.6-rc1 pwm_id
0x40b00000 PWM0 0 0
0x40b00010 PWM2 2 1
0x40c00000 PWM1 1 2
0x40c00010 PWM3 3 3
The hx4700 backlight uses PWM1 at 0x40c00000. Consequently the pwm_id
must be changed from 1 to 2.
This patch fixes the backlight PWM device number and at the same time
moves from the legacy PWM API (pwm_id) to the new PWM API (pwm_lookup).
Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
This reverts commit 92063cee11, it
was applied prematurely, causing this build error for
imx_v4_v5_defconfig:
arch/arm/mach-imx/clk-imx25.c: In function 'mx25_clocks_init':
arch/arm/mach-imx/clk-imx25.c:206:26: error: 'pwm_ipg_per' undeclared (first use in this function)
arch/arm/mach-imx/clk-imx25.c:206:26: note: each undeclared identifier is reported only once for each function it appears in
Sascha Hauer explains:
> There are several gates missing in clk-imx25.c. I have a patch which
> adds support for them and I seem to have missed that the above depends
> on it.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
With the introduction of CONFIG_ARCH_MULTIPLATFORM, versatile is
no longer the default platform, so we need to enable
CONFIG_ARCH_VERSATILE explicitly in order for that to be selected
rather than the multiplatform configuration.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The split of 370 and XP into two Kconfig options and the multiplatform
kernel support has changed a few Kconfig symbols, so let's update the
mvebu_defconfig file with the latest changes.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
patch 738a0fd7 "ARM: at91: fix external interrupts in non-DT case"
fixed a run-time error on some at91 platforms but did not apply
the same change to at91x40, which now doesn't build.
This changes at91x40 in the same way that the other platforms
were changed.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Here is one patch, a revert of a omap serial driver patch that was causing
problems, for your 3.7-rc tree.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
iEYEABECAAYFAlCKwvoACgkQMUfUDdst+ymoNACeKWk+71cE4eNIDm72ZXI1W+Vr
IKwAn1ucM5516OgesMlNrQ6tiKQFWo6M
=4ou2
-----END PGP SIGNATURE-----
Merge tag 'tty-3.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull serial fix from Greg Kroah-Hartman:
"Here is one patch, a revert of a omap serial driver patch that was
causing problems, for your 3.7-rc tree.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'tty-3.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "serial: omap: fix software flow control"
From Kukjin Kim <kgene.kim@samsung.com>:
One is spi stuff for fix the device names for the different subtypes of
the spi controller. And the other is adding missing .smp field for
exynos4-dt and fixing memory sections for exynos4210-trats board.
* 'v3.7-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Set .smp field of machine descriptor for exynos4-dt
ARM: dts: Split memory into 4 sections for exynos4210-trats
ARM: SAMSUNG: Add naming of s3c64xx-spi devices
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This reverts commit 871ae57adc, which is
scheduled for v3.8 and accidently got into v3.7-rc series.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Pull ARM fixes from Russell King:
"A random collection of various fixes, mainly from Arnd and a few other
people. Not thing really stands out here."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: drop experimental status for hotplug and Thumb2
ARM: 7560/1: SMP_TWD: use DIV_ROUND_CLOSEST() for periodic mode
ARM: 7559/1: smp: switch away from the idmap before updating init_mm.mm_count
ARM: 7556/1: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD
ARM: 7555/1: kexec: fix segment memory addresses check
ARM: warnings in arch/arm/include/asm/uaccess.h
ARM: binfmt_flat: unused variable 'persistent'
ARM: be really quiet when building with 'make -s'
ARM: pass -marm to gcc by default for both C and assembler
ARM: Xen: fix initial build problems
ARM: export default read_current_timer
ARM: Fix another build warning in arch/arm/mm/alignment.c
ARM: export set_irq_flags
ARM: kprobes: make more tests conditional
Pull CMA and DMA-mapping fixes from Marek Szyprowski:
"This consists mainly of a set of one-liner fixes and cleanups for a
few minor issues identified in both Contiguous Memory Allocator code
and ARM DMA-mapping subsystem."
* 'fixes_for_linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
ARM: mm: Remove unused arm_vmregion priv field
ARM: dma-mapping: fix build warning in __dma_alloc()
ARM: dma-mapping: support debug_dma_mapping_error
mm: cma: alloc_contig_range: return early for err path
drivers: cma: Fix wrong CMA selected region size default value
drivers: dma-coherent: Fix typo in dma_mmap_from_coherent documentation
drivers: dma-contiguous: Don't redefine SZ_1M
Add missing newline to warning message to avoid annoying
wrapping problems during kernel boot like this one:
omap_vc_i2c_init: I2C config for vdd_iva does not match other channels (0).
omap_vc_i2c_init: I2C config for vdd_mpu does not match other channels (0).Power Management for TI OMAP4.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This fixes early_printk() compilation for
socfpga. (senduart/busyuart/waituart were missing). It does that by
making Picochip code generic.
Signed-off-by: Pavel Machek <pavel@denx.de>
Acked-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Few empty files (spear1310_misc_regs.h and spear1340_misc_regs.h) are created by
commit b31e23726 "SPEAr13xx: Add header files".
Don't know how they got added, obviously my fault :)
But nobody could even catch them in reviews.
Remove them.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
mux and pinctrl fixes, and Beagle OPP fix.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=GIXH
-----END PGP SIGNATURE-----
Merge tag 'omap-for-v3.7-rc2/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren <tony@atomide.com>:
Timer fix for am33xx, runtime PM fix for UART, audio McBSP fixes,
mux and pinctrl fixes, and Beagle OPP fix.
* tag 'omap-for-v3.7-rc2/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: AM33XX: Fix configuration of dmtimer parent clock by dmtimer driverDate:Wed, 17 Oct 2012 13:55:55 -0500
ARM: OMAP3: Beagle: fix OPP customization and initcall ordering
ARM: OMAP3: Fix 3430 legacy mux names for ssi1 signals.
ARM: OMAP2+: Fix location of select PINCTRL
ARM/dts: omap3: Fix mcbsp2/3 hwmods to be able to probe the drivers for audio
ARM: OMAP2: UART: fix console UART mismatched runtime PM status
ARM: OMAP3: PM: apply part of the erratum i582 workaround
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
