of_device_ids (i.e. compatible strings and the respective data) are not
supposed to change at runtime. All functions working with of_device_ids
provided by <linux/of.h> work with const of_device_ids. So mark the
non-const structs in arch/arm as const, too.
While at it also add some __initconst annotations.
Acked-by: Jason Cooper <jason@lakedameon.net>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull ARM updates from Russell King:
- clang assembly fixes from Ard
- optimisations and cleanups for Aurora L2 cache support
- efficient L2 cache support for secure monitor API on Exynos SoCs
- debug menu cleanup from Daniel Thompson to allow better behaviour for
multiplatform kernels
- StrongARM SA11x0 conversion to irq domains, and pxa_timer
- kprobes updates for older ARM CPUs
- move probes support out of arch/arm/kernel to arch/arm/probes
- add inline asm support for the rbit (reverse bits) instruction
- provide an ARM mode secondary CPU entry point (for Qualcomm CPUs)
- remove the unused ARMv3 user access code
- add driver_override support to AMBA Primecell bus
* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (55 commits)
ARM: 8256/1: driver coamba: add device binding path 'driver_override'
ARM: 8301/1: qcom: Use secondary_startup_arm()
ARM: 8302/1: Add a secondary_startup that assumes ARM mode
ARM: 8300/1: teach __asmeq that r11 == fp and r12 == ip
ARM: kprobes: Fix compilation error caused by superfluous '*'
ARM: 8297/1: cache-l2x0: optimize aurora range operations
ARM: 8296/1: cache-l2x0: clean up aurora cache handling
ARM: 8284/1: sa1100: clear RCSR_SMR on resume
ARM: 8283/1: sa1100: collie: clear PWER register on machine init
ARM: 8282/1: sa1100: use handle_domain_irq
ARM: 8281/1: sa1100: move GPIO-related IRQ code to gpio driver
ARM: 8280/1: sa1100: switch to irq_domain_add_simple()
ARM: 8279/1: sa1100: merge both GPIO irqdomains
ARM: 8278/1: sa1100: split irq handling for low GPIOs
ARM: 8291/1: replace magic number with PAGE_SHIFT macro in fixup_pv code
ARM: 8290/1: decompressor: fix a wrong comment
ARM: 8286/1: mm: Fix dma_contiguous_reserve comment
ARM: 8248/1: pm: remove outdated comment
ARM: 8274/1: Fix DEBUG_LL for multi-platform kernels (without PL01X)
ARM: 8273/1: Seperate DEBUG_UART_PHYS from DEBUG_LL on EP93XX
...
Commit 9a1091ef00 ("irqchip: gic: Support hierarchy irq domain")
changed the GIC driver to use a non-legacy IRQ domain on DT
platforms. This patch assumes that DT-driven systems are getting
all of their interrupts from device tree.
Turns out that OMAP has quite a few hidden gems, and still uses
hardcoded interrupts despite having fairly complete DTs.
This patch attempts to work around these by offering a translation
method that can be called directly from the hwmod code, if present.
The same hack is sprinkled over PRCM and TWL.
It isn't pretty, but it seems to do the job without having to add
more hacks to the interrupt controller code.
Tested on OMAP4 (Panda-ES) and OMAP5 (UEVM5432).
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Nishanth Menon <nm@ti.com>
[tony@atomide.com: updated to fix make randconfig issue]
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch implements generic DT L2C initialisation (the one from
init_IRQ in arch/arm/kernel/irq.c) for Omap4 and AM43 platforms and
kills the SoC specific stuff in arch/arm/mach-omap2/omap4-common.c.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Nishanth Menon <nm@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Only a few files really need that platform header. When later splitting
omap_mmc_platform_data into omap_mmc and omap_mmc_hs, those files
declaring an hs mmc platform data will have to change the platform
include, which is a good sanity check.
Also removing omap242x_init_mmc, which is not used anywhere, checked
with grep.
Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
In order to handle errata I688, a page of sram was reserved by doing a
static iotable map. Now that we use gen_pool to manage sram, we can
completely remove all of these static mappings and use gen_pool_alloc()
to get the one page of sram space needed to implement errata I688.
omap_bus_sync will be NOP until SRAM initialization happens.
Suggested-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
On OMAP SOCs using PL310 controllers, power_ctrl register is not
accessible from non-secure software even on PL310 versions which
support it. The secure code takes care of setting it up correctly
and power transitions are proven on these devices.
For example, AM437x has L2C-310 version r3p3 and ROM code on that
device does not support writing to L2C-310 power control register.
The L2C driver, however, tries writing to this register for all
revisions >= r3p0.
This leads to a warning dump on boot which leads most users to believe
that L2 cache is non-functional.
Since the problem is understood, and cannot be addressed through
software, replace the warning with a pr_info() while maintaining the
WARN_ON() for other truly unexpected scenarios.
Reported-by: Nishanth Menon <nm@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
gic_init_irq() is no longer used as of:
commit b42b918194
Author: Tony Lindgren <tony@atomide.com>
Date: Thu May 30 12:53:05 2013 -0700
ARM: OMAP2+: Remove board-omap4panda.c
Drop it.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>
Pull ARM updates from Russell King:
- Major clean-up of the L2 cache support code. The existing mess was
becoming rather unmaintainable through all the additions that others
have done over time. This turns it into a much nicer structure, and
implements a few performance improvements as well.
- Clean up some of the CP15 control register tweaks for alignment
support, moving some code and data into alignment.c
- DMA properties for ARM, from Santosh and reviewed by DT people. This
adds DT properties to specify bus translations we can't discover
automatically, and to indicate whether devices are coherent.
- Hibernation support for ARM
- Make ftrace work with read-only text in modules
- add suspend support for PJ4B CPUs
- rework interrupt masking for undefined instruction handling, which
allows us to enable interrupts earlier in the handling of these
exceptions.
- support for big endian page tables
- fix stacktrace support to exclude stacktrace functions from the
trace, and add save_stack_trace_regs() implementation so that kprobes
can record stack traces.
- Add support for the Cortex-A17 CPU.
- Remove last vestiges of ARM710 support.
- Removal of ARM "meminfo" structure, finally converting us solely to
memblock to handle the early memory initialisation.
* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (142 commits)
ARM: ensure C page table setup code follows assembly code (part II)
ARM: ensure C page table setup code follows assembly code
ARM: consolidate last remaining open-coded alignment trap enable
ARM: remove global cr_no_alignment
ARM: remove CPU_CP15 conditional from alignment.c
ARM: remove unused adjust_cr() function
ARM: move "noalign" command line option to alignment.c
ARM: provide common method to clear bits in CPU control register
ARM: 8025/1: Get rid of meminfo
ARM: 8060/1: mm: allow sub-architectures to override PCI I/O memory type
ARM: 8066/1: correction for ARM patch 8031/2
ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation
ARM: 8065/1: remove last use of CONFIG_CPU_ARM710
ARM: 8062/1: Modify ldrt fixup handler to re-execute the userspace instruction
ARM: 8047/1: rwsem: use asm-generic rwsem implementation
ARM: l2c: trial at enabling some Cortex-A9 optimisations
ARM: l2c: add warnings for stuff modifying aux_ctrl register values
ARM: l2c: print a warning with L2C-310 caches if the cache size is modified
ARM: l2c: remove old .set_debug method
ARM: l2c: kill L2X0_AUX_CTRL_MASK before anyone else makes use of this
...
Get rid of init call to initialize L2 cache. Instead use the init_early
machine hook. This helps in using the initialization routine across
SoCs without the need of ugly cpu_is_*() checks.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
L2 cache initialization for OMAP4 redundantly sets the cache policy to
Round-Robin. This is not needed since thats the PL310 default anyway.
Removing this reduces the number of platform specific aux control
settings.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Since we now always enable NS access to the unlock registers, this can
be removed from OMAP4. Remove the NS access bit for the interrupt
registers from OMAP4 as well - nothing in the kernel accesses that yet,
and we can add it in core code when we have the need.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The cache size should already be present in the L2 cache auxiliary
control register: it is part of the integration process to configure
the hardware IP. Most platforms get this right, yet still many
cargo-cult program, and assume that they always need specifying to
the L2 cache code. Remove them so we can find out which really need
this.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Now that OMAP2 uses the write_sec method, we don't need to enable the L2
cache in OMAP2 specific code; this can be done via the normal mechanisms
in the L2C code. Remove the OMAP2 specific code.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
With the write_sec method, we no longer need to override the default
L2C disable method, and we no longer need the L2C set_debug method.
Both of these can be handled via the write_sec method.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Since we now automatically enable early BRESP in core L2C-310 code when
we detect a Cortex-A9, we don't need platforms/SoCs to set this bit
explicitly. Instead, they should seek to preserve the value of bit 30
in the auxiliary control register.
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
We have a mixture of different devices with different register layouts,
but we group all the bits together in an opaque mess. Split them out
into those which are L2C-310 specific and ones which refer to earlier
devices. Provide full auxiliary control register definitions.
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Santosh says:
> But we should kill all of that since we long back decided to remove
> ES1.0 related code. The mach-omap code alreasy has removed the ES1.0
> compatibility so feel free to remove any specific ES1.0
> related stuff. That silicon is long dead.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.
Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The same workaround as ff999b8a09
"ARM: OMAP4460: Workaround for ROM bug because of CA9 r2pX GIC ..."
need to be applied not only when system is booting, but when MPUSS hits
OSWR state through CPUIdle too. Without this WA the same issue is
reproduced now on boards PandaES and Tablet/Blaze with SOM OMAP4460
when CONFIG_CPU_IDLE is enabled.
After MPUSS has enterred OSWR and waken up:
- GIC distributor became disabled forever
- scheduling is not performed any more
Cc: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reported-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Kexec disables outer cache before jumping to reboot code, but it doesn't
flush it explicitly. Flush is done implicitly inside of l2x0_disable().
But some SoC's override default .disable handler and don't flush cache.
This may lead to a corrupted memory during Kexec reboot on these
platforms.
This patch adds cache flush inside of OMAP4 and Highbank outer_cache.disable()
handlers to make it consistent with default l2x0_disable().
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Preparing to move the parsing of reboot= to generic kernel code forces
the change in reboot_mode handling to use the enum.
[akpm@linux-foundation.org: fix arch/arm/mach-socfpga/socfpga.c]
Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Russ Anderson <rja@sgi.com>
Cc: Robin Holt <holt@sgi.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Separate out OMAP4 restart and have it similar to other platforms, in
a different file. Main motive is to reuse omap4-common on platforms
other than OMAP4, like AM43x, even if OMAP4 is deselected (otherwise
would have caused build breakage).
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Here is a collection of cleanup patches. Among the pieces that stand out are:
- The deletion of h720x platforms
- Split of at91 non-dt platforms to their own Kconfig file to keep them separate
- General cleanups and refactoring of i.MX and MXS platforms
- Some restructuring of clock tables for OMAP
- Convertion of PMC driver for Tegra to dt-only
- Some renames of sunxi -> sun4i (Allwinner A10)
- ... plus a bunch of other stuff that I haven't mentioned
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Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanup from Olof Johansson:
"Here is a collection of cleanup patches. Among the pieces that stand
out are:
- The deletion of h720x platforms
- Split of at91 non-dt platforms to their own Kconfig file to keep
them separate
- General cleanups and refactoring of i.MX and MXS platforms
- Some restructuring of clock tables for OMAP
- Convertion of PMC driver for Tegra to dt-only
- Some renames of sunxi -> sun4i (Allwinner A10)
- ... plus a bunch of other stuff that I haven't mentioned"
* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (119 commits)
ARM: i.MX: remove unused ARCH_* configs
ARM i.MX53: remove platform ahci support
ARM: sunxi: Rework the restart code
irqchip: sunxi: Rename sunxi to sun4i
irqchip: sunxi: Make use of the IRQCHIP_DECLARE macro
clocksource: sunxi: Rename sunxi to sun4i
clocksource: sunxi: make use of CLKSRC_OF
clocksource: sunxi: Cleanup the timer code
ARM: at91: remove trailing semicolon from macros
ARM: at91/setup: fix trivial typos
ARM: EXYNOS: remove "config EXYNOS_DEV_DRM"
ARM: EXYNOS: change the name of USB ohci header
ARM: SAMSUNG: Remove unnecessary code for dma
ARM: S3C24XX: Remove unused GPIO drive strength register definitions
ARM: OMAP4+: PM: Restore CPU power state to ON with clockdomain force wakeup method
ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2412
ARM: S3C24XX: Removed unneeded dependency on CPU_S3C2410
ARM: S3C24XX: Removed unneeded dependency on ARCH_S3C24XX for boards
ARM: SAMSUNG: Fix typo "CONFIG_SAMSUNG_DEV_RTC"
ARM: S5P64X0: Fix typo "CONFIG_S5P64X0_SETUP_SDHCI"
...
OMAP4460 ROM code bug needs the GIC distributor and local timer
bases to be available for the bug work around. In current code, dt
case these bases are not initialized leading to failure of the
errata work-around.
Fix it by extracting the bases from dt blob and populating them.
Reported-by: Sourav Poddar <sourav.poddar@ti.com>
Tested-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Converting more ARM platforms to multiplatform support. This time, OMAP
gets converted, which is a major step since this is by far the largest
platform in terms of code size. The same thing happens to the vt8500
platform.
Conflicts include:
* Two mach/uncompress.h files are removed, the changes made to them
elsewhere can be discarded now.
* Moving the OMAP4 irq_match array has context clashes with turning
omap4_sar_ram_init into an omap_early_initcall()
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Merge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC multiplatform support from Arnd Bergmann:
"Converting more ARM platforms to multiplatform support. This time,
OMAP gets converted, which is a major step since this is by far the
largest platform in terms of code size. The same thing happens to the
vt8500 platform."
* tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
net: cwdavinci_cpdma: export symbols for cpsw
remoteproc: omap: depend on OMAP_MBOX_FWK
[media] davinci: do not include mach/hardware.h
ARM: OMAP2+: Make sure files with omap initcalls include soc.h
ARM: OMAP2+: Include soc.h to drm.c to fix compiling
ARM: OMAP2+: Fix warning for hwspinlock omap_postcore_initcall
ARM: multi_v7_defconfig: add ARCH_ZYNQ
ARM: multi_v7_defconfig: remove unnecessary CONFIG_GPIOLIB
arm: vt8500: Remove remaining mach includes
arm: vt8500: Convert debug-macro.S to be multiplatform friendly
arm: vt8500: Remove single platform Kconfig options
ARM: OMAP2+: Remove now obsolete uncompress.h and debug-macro.S
ARM: OMAP2+: Add minimal support for booting vexpress
ARM: OMAP2+: Enable ARCH_MULTIPLATFORM support
ARM: OMAP2+: Disable code that currently does not work with multiplaform
ARM: OMAP2+: Add multiplatform debug_ll support
ARM: OMAP: Fix dmaengine init for multiplatform
ARM: OMAP: Fix i2c cmdline initcall for multiplatform
ARM: OMAP2+: Use omap initcalls
ARM: OMAP2+: Limit omap initcalls to omap only on multiplatform kernels
Now that we have GIC moved to drivers/irqchip and all GIC DT init for
platforms using irqchip_init, move gic.h and update the remaining
includes.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Anton Vorontsov <avorontsov@mvista.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Convert all GIC DT initialization over to use common irqchip_init
function.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
This way the initcalls don't run on other SoCs on multiplatform
kernels. Otherwise we'll get something like this when booting
on vexpress:
omap_hwmod: _ensure_mpu_hwmod_is_setup: MPU initiator hwmod mpu not yet registered
...
WARNING: at arch/arm/mach-omap2/pm.c:82 _init_omap_device+0x74/0x94()
_init_omap_device: could not find omap_hwmod for mpu
...
omap-dma-engine omap-dma-engine: OMAP DMA engine driver
...
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Cleanup patches for various ARM platforms and some of their associated
drivers. There's also a branch in here that enables Freescale i.MX to be
part of the multiplatform support -- the first "big" SoC that is moved
over (more multiplatform work comes in a separate branch later during
the merge window).
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups on various subarchitectures from Olof Johansson:
"Cleanup patches for various ARM platforms and some of their associated
drivers. There's also a branch in here that enables Freescale i.MX to
be part of the multiplatform support -- the first "big" SoC that is
moved over (more multiplatform work comes in a separate branch later
during the merge window)."
Conflicts fixed as per Olof, including a silent semantic one in
arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to
omap3xxx_restart(), and a new user of the old name was added).
* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits)
ARM: omap: fix typo on timer cleanup
ARM: EXYNOS: Remove unused regs-mem.h file
ARM: EXYNOS: Remove unused non-dt support for dwmci controller
ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan
ARM: OMAP3: cm-t3517: use GPTIMER for system clock
ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER
ARM: SAMSUNG: use devm_ functions for ADC driver
ARM: EXYNOS: no duplicate mask/unmask in eint0_15
ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443
ARM: EXYNOS: Remove i2c0 resource information and setting of device names
ARM: Kirkwood: checkpatch cleanups
ARM: Kirkwood: Fix sparse warnings.
ARM: Kirkwood: Remove unused includes
ARM: kirkwood: cleanup lsxl board includes
ARM: integrator: use BUG_ON where possible
ARM: integrator: push down SC dependencies
ARM: integrator: delete static UART1 mapping
ARM: integrator: delete SC mapping on the CP
ARM: integrator: remove static CP syscon mapping
ARM: integrator: remove static AP syscon mapping
...
This is a collection of header file cleanups, mostly for OMAP and AT91,
that keeps moving the platforms in the direction of multiplatform by
removing the need for mach-dependent header files used in drivers and
other places.
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Merge tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC Header cleanups from Olof Johansson:
"This is a collection of header file cleanups, mostly for OMAP and
AT91, that keeps moving the platforms in the direction of
multiplatform by removing the need for mach-dependent header files
used in drivers and other places."
Fix up mostly trivial conflicts as per Olof.
* tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (106 commits)
ARM: OMAP2+: Move iommu/iovmm headers to platform_data
ARM: OMAP2+: Make some definitions local
ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c
ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.h
ARM: OMAP2+: Move iopgtable header to drivers/iommu/
ARM: OMAP: Merge iommu2.h into iommu.h
atmel: move ATMEL_MAX_UART to platform_data/atmel.h
ARM: OMAP: Remove omap_init_consistent_dma_size()
arm: at91: move at91rm9200 rtc header in drivers/rtc
arm: at91: move reset controller header to arm/arm/mach-at91
arm: at91: move pit define to the driver
arm: at91: move at91_shdwc.h to arch/arm/mach-at91
arm: at91: move board header to arch/arm/mach-at91
arn: at91: move at91_tc.h to arch/arm/mach-at91
arm: at91 move at91_aic.h to arch/arm/mach-at91
arm: at91 move board.h to arch/arm/mach-at91
arm: at91: move platfarm_data to include/linux/platform_data/atmel.h
arm: at91: drop machine defconfig
ARM: OMAP: Remove NEED_MACH_GPIO_H
ARM: OMAP: Remove unnecessary mach and plat includes
...
Second set of OMAP PRCM cleanups for 3.8.
These patches remove the use of omap_prcm_get_reset_sources() from the
OMAP watchdog driver, and remove mach-omap2/prcm.c and
plat-omap/include/plat/prcm.h.
Basic test logs for this branch on top of Tony's cleanup-prcm branch
at commit 7fc54fd308 are here:
http://www.pwsan.com/omap/testlogs/prcm_cleanup_b_3.8/20121108151646/
However, cleanup-prcm at 7fc54fd3 does not include some fixes
that are needed for a successful test. With several reverts,
fixes, and workarounds applied, the following test logs were
obtained:
http://www.pwsan.com/omap/testlogs/TEST_prcm_cleanup_b_3.8/20121108151930/
which indicate that the series tests cleanly.
This second pull request updates one of the patches which broke
with rmk's allnoconfigs, and also updates the tag description to
indicate that 7fc54fd3 is building cleanly here.
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Merge tag 'omap-for-v3.8/cleanup-prcm-part2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup
From Tony Lindgren <tony@atomide.com>:
More PRCM cleanups via Paul Walmsley <paul@pwsan.com>:
Second set of OMAP PRCM cleanups for 3.8.
These patches remove the use of omap_prcm_get_reset_sources() from the
OMAP watchdog driver, and remove mach-omap2/prcm.c and
plat-omap/include/plat/prcm.h.
Basic test logs for this branch on top of Tony's cleanup-prcm branch
at commit 7fc54fd308 are here:
http://www.pwsan.com/omap/testlogs/prcm_cleanup_b_3.8/20121108151646/
However, cleanup-prcm at 7fc54fd3 does not include some fixes
that are needed for a successful test. With several reverts,
fixes, and workarounds applied, the following test logs were
obtained:
http://www.pwsan.com/omap/testlogs/TEST_prcm_cleanup_b_3.8/20121108151930/
which indicate that the series tests cleanly.
This second pull request updates one of the patches which broke
with rmk's allnoconfigs, and also updates the tag description to
indicate that 7fc54fd3 is building cleanly here.
* tag 'omap-for-v3.8/cleanup-prcm-part2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (27 commits)
ARM: OMAP2: Fix compillation error in cm_common
ARM: OMAP2+: PRCM: remove obsolete prcm.[ch]
ARM: OMAP2+: hwmod: call to _omap4_disable_module() should use the SoC-specific call
ARM: OMAP2+: PRCM: consolidate PRCM-related timeout macros
ARM: OMAP2+: PRCM: split and relocate the PRM/CM globals setup
ARM: OMAP2+: PRCM: remove omap2_cm_wait_idlest()
ARM: OMAP2+: CM/clock: convert _omap2_module_wait_ready() to use SoC-independent CM functions
ARM: OMAP2xxx: APLL/CM: convert to use omap2_cm_wait_module_ready()
ARM: OMAP2+: board files: use SoC-specific system restart functions
ARM: OMAP2+: PRCM: create SoC-specific chip restart functions
ARM: OMAP2xxx: clock: move virt_prcm_set code into clkt2xxx_virt_prcm_set.c
ARM: OMAP2xxx: clock: remove global 'dclk' variable
ARM: OMAP2/3: PRM: add SoC reset functions (using the CORE DPLL method)
ARM: OMAP2+: common: remove mach-omap2/common.c globals and map_common_io code
ARM: OMAP2+: PRCM: remove omap_prcm_get_reset_sources()
watchdog: OMAP: use standard GETBOOTSTATUS interface; use platform_data fn ptr
ARM: OMAP2+: WDT: move init; add read_reset_sources pdata function pointer
ARM: OMAP1: CGRM: fix omap1_get_reset_sources() return type
ARM: OMAP2+: PRM: create PRM reset source API for the watchdog timer driver
ARM: OMAP1: create read_reset_sources() function (for initial use by watchdog)
...
Conflicts:
arch/arm/mach-omap2/cm33xx.c
arch/arm/mach-omap2/io.c
arch/arm/mach-omap2/prm_common.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Split omap2_set_globals_prcm() into PRM, CM, and PRCM_MPU variants, since
these are all separate IP blocks. This should make it easier to move the
PRM, CM, PRCM_MPU code into drivers/ in future patchsets.
At this point arch/arm/plat-omap/include/plat/prcm.h is empty; a
subsequent patch will remove it, and remove the #include from all the
files that #include it.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
Split omap_prcm_restart() from mach-omap2/prcm.c into SoC-specific
variants. These functions need to be able to save the reboot reason
into the scratchpad RAM. This implies a dependency on both the PRM
and SCM IP blocks, so they've been moved into their own file. This
will eventually call functions in the PRM and SCM drivers, once those
are created.
Vaibhav Hiremath <hvaibhav@ti.com> identified an unused prototype in
the first version of this patch - now removed. Tony Lindgren
<tony@atomide.com> noted a compile problem with some RMK Kconfigs;
resolved in this patch.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Get rid of the mach-omap2/common.c globals by moving the global
initialization for IP block addresses that must occur early into
mach-omap2/io.c. In the process, remove the *_map_common_io*() and
SoC-specific *set_globals* functions.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
'Workaround for ROM bug because of CA9 r2pX gic control'
register change disables the gic distributor while the secondary
cpu is being booted. If a localtimer interrupt on the primary cpu
occurs when the distributor is turned off, the interrupt is lost,
and the localtimer never fires again.
Make the primary cpu wait for the secondary cpu to reenable the
gic distributor (with interrupts off for safety), and then
check if the pending bit is set in the localtimer but not the
gic. If so, ack it in the localtimer, and reset the timer with
the minimum timeout to trigger a new timer interrupt.
Signed-off-by: Colin Cross <ccross@android.com>
[s-jan@ti.com: adapted to k3.4 + validated functionality]
Signed-off-by: Sebastien Jan <s-jan@ti.com>
[t-kristo@ti.com: dropped generic ARM kernel exports from the code, rebased
to mainline]
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
On OMAP4+ devices, GIC register context is lost when MPUSS hits
the OSWR(Open Switch Retention). On the CPU wakeup path, ROM code
gets executed and one of the steps in it is to restore the
saved context of the GIC. The ROM Code GIC distributor restoration
is split in two parts: CPU specific register done by each CPU and
common register done by only one CPU.
Below is the abstract flow.
...............................................................
- MPUSS in OSWR state.
- CPU0 wakes up on the event(interrupt) and start executing ROM code.
[..]
- CPU0 executes "GIC Restoration:"
[...]
- CPU0 swicthes to non-secure mode and jumps to OS resume code.
[...]
- CPU0 is online in OS
- CPU0 enables the GIC distributor. GICD.Enable Non-secure = 1
- CPU0 wakes up CPU1 with clock-domain force wakeup method.
- CPU0 continues it's execution.
[..]
- CPU1 wakes up and start executing ROM code.
[..]
- CPU1 executes "GIC Restoration:"
[..]
- CPU1 swicthes to non-secure mode and jumps to OS resume code.
[...]
- CPU1 is online in OS and start executing.
[...] -
GIC Restoration: /* Common routine for HS and GP devices */
{
if (GICD != 1) { /* This will be true in OSWR state */
if (GIC_SAR_BACKUP_STATE == SAVED)
- CPU restores GIC distributor
else
- reconfigure GIC distributor to boot values.
GICD.Enable secure = 1
}
if (GIC_SAR_BACKUP_STATE == SAVED)
- CPU restore its GIC CPU interface registers if saved.
else
- reconfigure its GIC CPU interface registers to boot
values.
}
...............................................................
So as mentioned in the flow, GICD != 1 condition decides how
the GIC registers are handled in ROM code wakeup path from
OSWR. As evident from the flow, ROM code relies on the entire
GICD register value and not specific register bits.
The assumption was valid till CortexA9 r1pX version since there
was only one banked bit to control secure and non-secure GICD.
Secure view which ROM code sees:
bit 0 == Enable Non-secure
Non-secure view which HLOS sees:
bit 0 == Enable secure
But GICD register has changed between CortexA9 r1pX and r2pX.
On r2pX GICD register is composed of 2 bits.
Secure view which ROM code sees:
bit 1 == Enable Non-secure
bit 0 == Enable secure
Non-secure view which HLOS sees:
bit 0 == Enable Non-secure
Hence on OMAP4460(r2pX) devices, if you go through the
above flow again during CPU1 wakeup, GICD == 3 and hence
ROM code fails to understand the real wakeup power state
and reconfigures GIC distributor to boot values. This is
nasty since you loose the entire interrupt controller
context in a live system.
The ROM code fix done on next OMAP4 device (OMAP4470 - r2px) is to
check "GICD.Enable secure != 1" for GIC restoration in OSWR wakeup path.
Since ROM code can't be fixed on OMAP4460 devices, a work around
needs to be implemented. As evident from the flow, as long as
CPU1 sees GICD == 1 in it's wakeup path from OSWR, the issue
won't happen. Below is the flow with the work-around.
...............................................................
- MPUSS in OSWR state.
- CPU0 wakes up on the event(interrupt) and start executing ROM code.
[..]
- CPU0 executes "GIC Restoration:"
[..]
- CPU0 swicthes to non-secure mode and jumps to OS resume code.
[..]
- CPU0 is online in OS.
- CPU0 does GICD.Enable Non-secure = 0
- CPU0 wakes up CPU1 with clock domain force wakeup method.
- CPU0 waits for GICD.Enable Non-secure = 1
- CPU0 coninues it's execution.
[..]
- CPU1 wakes up and start executing ROM code.
[..]
- CPU1 executes "GIC Restoration:"
[..]
- CPU1 swicthes to non-secure mode and jumps to OS resume code.
[..]
- CPU1 is online in OS
- CPU1 does GICD.Enable Non-secure = 1
- CPU1 start executing
[...]
...............................................................
With this procedure, the GIC configuration done between the
CPU0 wakeup and CPU1 wakeup will not be lost but during this
short windows, the CPU0 will not receive interrupts.
The BUG is applicable to only OMAP4460(r2pX) devices.
OMAP4470 (also r2pX) is not affected by this bug because
ROM code has been fixed.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Let's make the omap2+ specific parts private to mach-omap2.
This leaves just a minimal shared code into plat-omap like
it should be.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Most of the defines are specific to omap1 and omap2+,
and should be in the local headers. Only minimal function
prototypes need to be shared.
As discussed on linux-arm-kernel, we want to avoid
relative includes for the arch/arm/*omap* shared code:
http://www.spinics.net/lists/linux-omap/msg80520.html
So this patch re-adds a minimal plat/sram.h.
The new plat/sram.h must not be included from drivers,
that will break build for omap2+ CONFIG_MULTIPLATFORM.
Note that this patch temporarily adds two more
relative includes; Those will be removed in the
following patch.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Moving plat/omap-secure.h locally to mach-omap2/
as part of single zImage work
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
We need to remove this from plat for ARM common zImage
support.
Also remove includes not needed by the omap_hsmmc.c driver.
Cc: linux-mmc@vger.kernel.org
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Venkatraman S <svenkatr@ti.com>
[tony@atomide.com: fold in removal of unused driver includes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Device tree conversion and enablement branch. Mostly a bunch of new
bindings and setup for various platforms, but the Via/Winchip VT8500
platform is also converted over from being 100% legacy to now use
device tree for probing. More of that will come for 3.8.
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Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM soc device tree updates from Olof Johansson:
"Device tree conversion and enablement branch. Mostly a bunch of new
bindings and setup for various platforms, but the Via/Winchip VT8500
platform is also converted over from being 100% legacy to now use
device tree for probing. More of that will come for 3.8."
Trivial conflicts due to removal of vt8500 files, and one documentation
file that was added with slightly different contents both here and in
the USb tree.
* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (212 commits)
arm: vt8500: Fixup for missing gpio.h
ARM: LPC32xx: LED fix in PHY3250 DTS file
ARM: dt: mmp-dma: add binding file
arm: vt8500: Update arch-vt8500 to devicetree support.
arm: vt8500: gpio: Devicetree support for arch-vt8500
arm: vt8500: doc: Add device tree bindings for arch-vt8500 devices
arm: vt8500: clk: Add Common Clock Framework support
video: vt8500: Add devicetree support for vt8500-fb and wm8505-fb
serial: vt8500: Add devicetree support for vt8500-serial
rtc: vt8500: Add devicetree support for vt8500-rtc
arm: vt8500: Add device tree files for VIA/Wondermedia SoC's
ARM: tegra: Add Avionic Design Tamonten Evaluation Carrier support
ARM: tegra: Add Avionic Design Medcom-Wide support
ARM: tegra: Add Avionic Design Plutux support
ARM: tegra: Add Avionic Design Tamonten support
ARM: tegra: dts: Add pwm label
ARM: ux500: Fix SSP register address format
ARM: ux500: Apply tc3589x's GPIO/IRQ properties to HREF's DT
ARM: ux500: Remove redundant #gpio-cell properties from Snowball DT
ARM: ux500: Add all encompassing sound node to the HREF Device Tree
...
work properly with sparse IRQ. It also removes
dependencies to mach/hardware.h. These help moving
things towards ARM single zImage support.
This branch is based on a commit in tty-next
branch with omap-devel-gpmc-fixed-for-v3.7 and
cleanup-omap-tags-for-v3.7 merged in to keep things
compiling and sort out some merge conflicts.
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Merge tag 'omap-cleanup-sparseirq-for-v3.7' into devel-dt
This branch contains changes needed to make omap2+
work properly with sparse IRQ. It also removes
dependencies to mach/hardware.h. These help moving
things towards ARM single zImage support.
This branch is based on a commit in tty-next
branch with omap-devel-gpmc-fixed-for-v3.7 and
cleanup-omap-tags-for-v3.7 merged in to keep things
compiling and sort out some merge conflicts.
Conflicts:
arch/arm/mach-omap2/omap4-common.c
drivers/gpio/gpio-twl4030.c
