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* OMAP4: clock: Add dummy clock nodes for interface clocksSantosh Shilimkar2010-02-24
| | | | | | | | | | | | | | | | On OMAP4 platform the iclk control is completly under hardware control and no software control is available. This difference w.r.t previous OMAP's needs all the common driver accross OMAP's , cpu_is_xxxx() checks. To avoid poulluting the drivers dummy clock nodes are created (The autogeneration script has been updated accordingly). Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Benoit Cousson <b-cousson@ti.com> [paul@pwsan.com: made OMAP1 dummy_ck common and edited patch to reuse that] Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP clock: add omap_clk_get_by_name() for use by OMAP hwmod core codePaul Walmsley2010-02-24
| | | | | | | | | | | | | | | | | | | | | | | The OMAP hwmod core code is intended to use SoC IP block description structures that are autogenerated from TI's OMAP hardware database. Currently the hwmod code uses clkdev device + connection addressing to identify clocks. This causes problems in the hwmod autogeneration process, since the TI hardware database doesn't use platform_device or clkdev addressing; it uses a single clock signal name string, which tends to bear some resemblance to what is used in the OMAP TRMs. This patch adds a non-exported function to the OMAP clock code, omap_clk_get_by_name(). A subsequent patch will convert the hwmod code to use this function. This function is for use only by core code, and practically, no other code outside the hwmod code should need it. Device driver code in the kernel must not use this function, which is why it is not exported. Drivers should use the appropriate clock alias provided by the clkdev data structures, so driver code can be completely SoC-independent. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com> Cc: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP clock: drop .id field; ensure each clock has a unique namePaul Walmsley2010-02-24
| | | | | | | | After the clkdev conversion, the struct clk.id field became superfluous, so, drop it. Bring the clock names closer to the TRMs and ensure they are unique for debugfs. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* Merge branch 'omap-fixes-for-linus' into omap-for-linusTony Lindgren2010-02-10
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| * omap: Fix access to already released memory in clk_debugfs_register_one()Marek Skuczynski2010-02-03
| | | | | | | | | | | | | | | | | | I have found an access to already released memory in clk_debugfs_register_one() function. Signed-off-by: Marek Skuczynski <mareksk7@gmail.com> Acked-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* | OMAP clock: resolve all remaining sparse warningsPaul Walmsley2010-01-29
| | | | | | | | | | | | Resolve all remaining sparse warnings in the OMAP clock code. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* | OMAP clock: make the fixed divisor clock code available for all OMAPsPaul Walmsley2010-01-26
|/ | | | | | | | | | One of the OMAP1 clocks can use the fixed divisor recalculation code introduced in the OMAP2 clock code, so rename the omap2_fixed_divisor_recalc() function to omap_fixed_divisor_recalc() and make it available to all OMAPs. A followup patch converts the OMAP1 clock. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP clock/CPUFreq: add clk_exit_cpufreq_table()Paul Walmsley2010-01-08
| | | | | | | | | | | A subsequent patch adds code on OMAP2xxx to dynamically allocate the CPUFreq frequency table in clk_init_cpufreq_table(), so for it to avoid a leak, it will need a corresponding function to free the memory. This patch adds clk_exit_cpufreq_table() with generic code to call a chip-specific variant inside the clockfw_lock spinlock via struct clk_functions. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP clock: remove incorrect EXPORT_SYMBOL()sPaul Walmsley2010-01-08
| | | | | | | | | | | The only symbols that should be exported are symbols that are to be called from loadable kernel modules, e.g., device drivers. In the context of plat-omap/clock.c, these should only be the Linux clock interface symbols as defined by include/linux/clk.h. Core code doesn't need these symbols to be exported. Also, clean up an old comment while here. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* ARM: OMAP4: PM: Add dummy hooks for OMAP4 dpll api'sRajendra Nayak2009-12-11
| | | | | | | | | | | | This patch adds dummy hooks for OMAP4 dpll api's. Removes dummy hooks for clkdev api's and enables CLKDEV for OMAP4. Also comments clockdomain calls from within the clock framework as its not supported yet for OMAP4. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoit Cousson <b-cousson@ti.com>
* ARM: OMAP4: PM: Fix the PRM and CM base addressesRajendra Nayak2009-12-11
| | | | | | | | | This patch fixes the PRM and CM base addresses and adds a new CM2 base address for OMAP4 Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoit Cousson <b-cousson@ti.com>
* omap: headers: Move remaining headers from include/mach to include/platTony Lindgren2009-10-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the remaining headers under plat-omap/include/mach to plat-omap/include/plat. Also search and replace the files using these headers to include using the right path. This was done with: #!/bin/bash mach_dir_old="arch/arm/plat-omap/include/mach" plat_dir_new="arch/arm/plat-omap/include/plat" headers=$(cd $mach_dir_old && ls *.h) omap_dirs="arch/arm/*omap*/ \ drivers/video/omap \ sound/soc/omap" other_files="drivers/leds/leds-ams-delta.c \ drivers/mfd/menelaus.c \ drivers/mfd/twl4030-core.c \ drivers/mtd/nand/ams-delta.c" for header in $headers; do old="#include <mach\/$header" new="#include <plat\/$header" for dir in $omap_dirs; do find $dir -type f -name \*.[chS] | \ xargs sed -i "s/$old/$new/" done find drivers/ -type f -name \*omap*.[chS] | \ xargs sed -i "s/$old/$new/" for file in $other_files; do sed -i "s/$old/$new/" $file done done for header in $(ls $mach_dir_old/*.h); do git mv $header $plat_dir_new/ done Signed-off-by: Tony Lindgren <tony@atomide.com>
* OMAP clock: use debugfs_remove_recursive() for rewindingHiroshi DOYU2009-09-03
| | | | | | | Rewinding each debugfs entries to unregister if an error happens. Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Paul Walmsley <paul@pwsan.com>
* Merge branch 'omap4' into for-nextTony Lindgren2009-05-28
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| * ARM: OMAP4: Clock stubs since CLKDEV not in yet.Santosh Shilimkar2009-05-28
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch update the common clock.c file for OMAP4. The clk_get() and clk_put() functions are moved to common place in arch/arm/common/clkdev.c Since on current OMAP4 platform clk management is still not supported, the platform file is stubbed with those functions. Once the framework is ready, this WILL be replaced with a full clkdev implementation. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* | OMAP2xxx clock: rename clk_init_one() to clk_preinit()Paul Walmsley2009-05-12
|/ | | | | | Rename clk_init_one() to clk_preinit() to distinguish its function from clk_init() and the individual struct clk init functions. Signed-off-by: Paul Walmsley <paul@pwsan.com>
* OMAP2xxx clock: pre-initialize struct clks earlyPaul Walmsley2009-04-22
| | | | | | | | | | | | | | | | | | | | | | | Commit 3f0a820c4c0b4670fb5f164baa5582e23c2ef118 breaks OMAP2xxx boot during initial propagate_rate() on osc_ck and sys_ck. Fix by pre-initializing all struct clks before running any other clock init code. Incorporates review comments from Russell King <rmk+kernel@arm.linux.org.uk>. Resolves <1>Unable to handle kernel NULL pointer dereference at virtual address 00000000 <1>pgd = c0004000 <1>[00000000] *pgd=00000000 Internal error: Oops: 5 [#1] Modules linked in: CPU: 0 Not tainted (2.6.29-omap1 #37) PC is at propagate_rate+0x10/0x60 LR is at omap2_clk_init+0x30/0x218 ... Signed-off-by: Paul Walmsley <paul@pwsan.com> Tested-by: Jarkko Nikula <jarkko.nikula@nokia.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: clk_set_parent: deny changing parent if clock is enabledRussell King2009-03-03
| | | | | | | | | | | | | | | | | | | | | | | | | Richard Woodruff writes: | The historic usage of this has been against single use leaf clocks | (1st instance of gptimer). When it was used it did: | clk_get() | clk_set_parent() | clk_enable() | | This usage was ok for that. Use on a disabled clock is needed. | | If there are multiple users on the clock or it is enabled there are | problems. | | The call can still be unfriendly if 2 different drivers are using the | clock with their own clock get/enable. It might be the function should | return an error if usecount != 0 to stop surprises. It is all around | better if the parenting is done when the clock is off. This is a good reason to ensure that the clock is not enabled when clk_set_parent() is called. Acked-by: Richard Woodruff <r-woodruff2@ti.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: arrange for clock recalc methods to return the rateRussell King2009-02-14
| | | | | | | | | | | | | linux-omap source commit 33d000c99ee393fe2042f93e8422f94976d276ce introduces a way to "dry run" clock changes before they're committed. However, this involves putting logic to handle this into each and every recalc function, and unfortunately due to the caching, led to some bugs. Solve both of issues by making the recalc methods always return the clock rate for the clock, which the caller decides what to do with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] OMAP clock: drop clk_get_usecount()Paul Walmsley2009-02-08
| | | | | | | | | | | | | This function is race-prone and mistakenly conveys the impression to drivers that it is part of the clock interface. Get rid of it: core code that absolutely needs this can just check clk->usecount. Drivers should not use it at all. linux-omap source commit is 5df9e4adc2f6a6d55aca53ee27b8baad18897c05. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: create a proper tree of clocksRussell King2009-02-08
| | | | | | | | | | | Traditionally, we've tracked the parent/child relationships between clk structures by setting the child's parent member to point at the upstream clock. As a result, when decending the tree, we have had to scan all clocks to find the children. Avoid this wasteful scanning by keeping a list of the clock's children. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: clks: call recalc after any rate changeRussell King2009-02-08
| | | | | | | | | | | | This implements the remainder of: OMAP clock: move rate recalc, propagation code up to plat-omap/clock.c from Paul Walmsley which is not covered by the previous: [ARM] omap: move clock propagation into core omap clock code [ARM] omap: remove unnecessary calls to propagate_rate() [ARM] omap: move propagate_rate() calls into generic omap clock code commits. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: remove pre-CLKDEV clk_get/clk_putRussell King2009-02-08
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: convert OMAP1 to use clkdevRussell King2009-02-08
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: allow double-registering of clocksRussell King2009-02-08
| | | | | | | | This stops things blowing up if a 'struct clk' to be passed more than once to clk_register(), which will be required when we decouple struct clk's from their names. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: move propagate_rate() calls into generic omap clock codeRussell King2009-02-08
| | | | | | | | | propagate_rate() is recursive, so it makes sense to minimise the amount of stack which is used for each recursion. So, rather than recursing back into it from the ->recalc functions if RATE_PROPAGATES is set, do that test at the higher level. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: move clock propagation into core omap clock codeRussell King2009-02-08
| | | | | | | | Move the clock propagation calls for set_parent and set_rate into the core omap clock code, rather than having these calls scattered throughout the OMAP1 and OMAP2 implementations. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: provide a standard clk_get_parent() implementationRussell King2009-02-08
| | | | | | which only has to return clk->parent. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: remove clk_deny_idle and clk_allow_idleRussell King2009-02-08
| | | | | | | Nothing makes any use of these functions, so there's little point in providing them. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: remove clk->ownerRussell King2009-02-08
| | | | | | | clk->owner is always NULL, so its existence doesn't serve any useful function other than bloating the kernel by 992 bytes. Remove it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] omap: provide a NULL clock operations structureRussell King2009-02-08
| | | | | | | | ... and use it for clocks which are ALWAYS_ENABLED. These clocks use a non-NULL enable_reg pointer for other purposes (such as selecting clock rates.) Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: OMAP: Fix debugfs_create_*'s error checking method for arm/plat-omapZhaolei2008-11-04
| | | | | | | | | | | | | | | | debugfs_create_*() returns NULL if an error occurs, returns -ENODEV when debugfs is not enabled in the kernel. Comparing to PATCH v1, because clk_debugfs_init is included in "#if defined CONFIG_DEBUG_FS", we only need to check NULL return. Thanks Li Zefan <lizf@cn.fujitsu.com> debugfs_create_u8() and other function's return value's checking method are also fixed in this patch. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* [ARM] Convert asm/io.h to linux/io.hRussell King2008-09-06
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* removed unused #include <linux/version.h>'sAdrian Bunk2008-08-23
| | | | | | | | This patch lets the files using linux/version.h match the files that #include it. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King2008-08-07
| | | | | | This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: OMAP: CLKFW: Initial debugfs support for omap clock frameworkHiroshi DOYU2008-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | debugfs can provide the infrastructure to trace the dependencies of clock tree hierarchy quite visibly. This patch enables to keep track of clock tree hierarchy and expose their attributes under each clock directry as below: omap:~# tree -d -L 2 /debug/clock/omap_32k_fck/ /debug/clock/omap_32k_fck/ |-- gpt10_fck |-- gpt11_fck |-- gpt1_fck |-- per_32k_alwon_fck | |-- gpio2_fck | |-- gpio3_fck | |-- gpio4_fck | |-- gpio5_fck | |-- gpio6_fck | `-- wdt3_fck |-- ts_fck `-- wkup_32k_fck |-- gpio1_fck `-- wdt2_fck 14 directories omap:~# tree /debug/clock/omap_32k_fck/gpt10_fck/ /debug/clock/omap_32k_fck/gpt10_fck/ |-- flags |-- rate `-- usecount 0 directories, 3 files Although, compared with David Brownell's small patch, this may look bit overkilling, I expect that this debugfs can deal with other PRCM complexities at the same time. For example, powerdomain dependencies can be expressed by using symbolic links of these clocks if powerdomain supports dubgfs as well. Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* [ARM] omap: fix omap clk support build errorsRussell King2008-05-22
| | | | | | | | | | arch/arm/plat-omap/clock.c:397: warning: "struct cpufreq_frequency_table" declared inside parameter list arch/arm/plat-omap/clock.c:397: warning: its scope is only this definition or declaration, which is probably not what you want arch/arm/plat-omap/clock.c: In function `clk_init_cpufreq_table': arch/arm/plat-omap/clock.c:402: error: structure has no member named `clk_init_cpufreq_table' arch/arm/plat-omap/clock.c:403: error: structure has no member named `clk_init_cpufreq_table' Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: OMAP: Warn on disabling clocks with no usersTony Lindgren2008-05-09
| | | | | | | | Instead of BUG(), warn on disabling clocks with no users. Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge branch 'semaphore' of ↵Linus Torvalds2008-04-21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc * 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: Deprecate the asm/semaphore.h files in feature-removal-schedule. Convert asm/semaphore.h users to linux/semaphore.h security: Remove unnecessary inclusions of asm/semaphore.h lib: Remove unnecessary inclusions of asm/semaphore.h kernel: Remove unnecessary inclusions of asm/semaphore.h include: Remove unnecessary inclusions of asm/semaphore.h fs: Remove unnecessary inclusions of asm/semaphore.h drivers: Remove unnecessary inclusions of asm/semaphore.h net: Remove unnecessary inclusions of asm/semaphore.h arch: Remove unnecessary inclusions of asm/semaphore.h
| * arch: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox2008-04-18
| | | | | | | | | | | | | | | | | | None of these files use any of the functionality promised by asm/semaphore.h. It's possible that they rely on it dragging in some unrelated header file, but I can't build all these files, so we'll have fix any build failures as they come up. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
* | ARM: OMAP2: Change 24xx to use shared clock code and new reg accessPaul Walmsley2008-04-14
|/ | | | | | | | | | | | | | | | | This patch changes 24xx to use shared clock code and new register access. Note that patch adds some temporary OLD_CK defines to keep patch more readable. These temporary defines will be removed in the next patch. Also not all clocks are changed in this patch to limit the size. Also, the patch fixes few incorrect clock defines in clock24xx.h. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: add SoSSI clock (call propagate_rate for childrens)Imre Deak2007-05-09
| | | | | | | | | Clocks with the follow parent rate mode were not updating their children at propagate rate time. Signed-off-by: Imre Deak <imre.deak@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: OMAP: Add function to print clock usecountsJuha Yrjola2007-05-08
| | | | | | | | Useful for debugging power management code. Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: OMAP: Sync clocks with linux-omap treeTony Lindgren2006-09-25
| | | | | | | Mostly clean up CONFIG_OMAP_RESET_CLOCKS. Also includes a patch from Imre Deak to make McSPI clocks use id. Signed-off-by: Tony Lindgren <tony@atomide.com>
* ARM: OMAP: Add sanity check to clk_disableJuha Yrjola2006-09-25
| | | | | | | BUG() if the clock use count is already zero. Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-07-02
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits) [ARM] 3541/2: workaround for PXA27x erratum E7 [ARM] nommu: provide a way for correct control register value selection [ARM] 3705/1: add supersection support to ioremap() [ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure [ARM] 3706/2: ep93xx: add cirrus logic edb9315a support [ARM] 3704/1: format IOP Kconfig with tabs, create more consistency [ARM] 3703/1: Add help description for ARCH_EP80219 [ARM] 3678/1: MMC: Make OMAP MMC work [ARM] 3677/1: OMAP: Update H2 defconfig [ARM] 3676/1: ARM: OMAP: Fix dmtimers and timer32k to compile on OMAP1 [ARM] Add section support to ioremap [ARM] Fix sa11x0 SDRAM selection [ARM] Set bit 4 on section mappings correctly depending on CPU [ARM] 3666/1: TRIZEPS4 [1/5] core ARM: OMAP: Multiplexing for 24xx GPMC wait pin monitoring ARM: OMAP: Fix SRAM to use MT_MEMORY instead of MT_DEVICE ARM: OMAP: Update dmtimers ARM: OMAP: Make clock variables static ARM: OMAP: Fix GPMC compilation when DEBUG is defined ARM: OMAP: Mux updates for external DMA and GPIO ...
| * ARM: OMAP: Make clock variables staticJuha Yrjola2006-06-26
| | | | | | | | | | | | | | | | Since the mutex protecting the clock list is static, the list itself should be too. Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* | Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
|/ | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [ARM] 3461/1: ARM: OMAP: Fix clk_get() when using id and nameTony Lindgren2006-04-09
| | | | | | | | | | | | Patch from Tony Lindgren Recent change to use both id and name when available was not necessarily returning the right clock as it also searched for clock name afterwards. This caused MMC to break on H2 and H3 boards. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 3426/1: ARM: OMAP: 1/8 Update clock frameworkTony Lindgren2006-04-02
| | | | | | | | | | | | | | | Patch from Tony Lindgren Update OMAP clock framework from linux-omap tree. The highlights of the patch are: - Add support for omap730 clocks by Andrzej Zaborowski - Fix compile warnings by Dirk Behme - Add support for using dev id by Tony Lindgren and Komal Shah - Move memory timings and PRCM into separate files by Tony Lindgren Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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