Commit Graph

16 Commits

Author SHA1 Message Date
Linus Torvalds
97b1007a29 ARM: arm-soc platform updates for 3.10, part 1
This branch contains platform updates for 3.10. Among the highlights:
 
 - Support for the new Atmel Cortex-A5 based platforms (SAMA5D3)
 - New support for CSR SiRFatlas6 SoCs
 - A handful of updates for NVidia T114 (a.k.a. Tegra 4)
 - A bunch of updates for the shmobile platforms
 - A handful of updates for davinci
 - A few updates for Qualcomm MSM
 - Plus a handful of other patches, defconfig updates, etc.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRgg+LAAoJEIwa5zzehBx3ePcP/3NUsSOTRQ2SZIVpyjnWOhkf
 RMZiRaVsxrY0BPfDB9E2Vcb6lannKmACTujs/Ux7kJC22BreuFM1PnZoDfhkRuSE
 n/nVB1981XJS82z2uONRSZGlUPSGWYzhTTUDJ0nHiBGmIGf5ctnC0iYWp3As3lv9
 kNY14H7NkwQ4zBVNEMu7WfW8d2IJgqZJgR9xhZPv5fOZ+LlQmK6VaHWTmQtjyea1
 bG1qoJ0dPbfJB4Vnr3a49rBkSJxZUiv8xQucw9+vo+ADRi64M4sZ1Jj2vVyDpqZp
 F4fxBNMVvg7xM0TcBbItFFYJBXlUjeT4z+UI5iYjkbnE7EV9ndFeZXHCWX1qzOSy
 X/nrJKuoe7ISQanBE9SHS9DpDGlkPDO0Mn0vb1f2VUQOY513pt/D1iFYEucZ6WCN
 fWUYtvt5GayidUr55D1U8ssbE0oGt2rizd9x7GUk4KbRVAnUUNopIQAhXrefTrZm
 jfdZNDckJ2F3aq8IPjsKuyJTpe61xD4Wvb3P/pEE3Q8fowPF5WIxXV+qjqHQ9vtt
 Tz4LkP/YdynVFGmhOwz3QZmPaQItaabaYyCcZ5cVCvt5mdxx5VuHYppafhCPJz+V
 KCQpKi1azuIv+sDR+nlGOl6+Ideea3s7TsRudfbmQFp5GsqkqOdJzR9gbbKmJauQ
 4JPpRd+4W8wC8zXQnhVY
 =HXX3
 -----END PGP SIGNATURE-----

Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform updates from Olof Johansson:
 "This branch contains part 1 of the platform updates for 3.10.  Among
  the highlights:

   - Support for the new Atmel Cortex-A5 based platforms (SAMA5D3)
   - New support for CSR SiRFatlas6 SoCs
   - A handful of updates for NVidia T114 (a.k.a. Tegra 4)
   - A bunch of updates for the shmobile platforms
   - A handful of updates for davinci
   - A few updates for Qualcomm MSM
   - Plus a handful of other patches, defconfig updates, etc."

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (135 commits)
  ARM: tegra: pm: fix build error w/o PM_SLEEP
  ARM: davinci: ensure global variables are declared
  ARM: davinci: sram.c: fix incorrect type in assignment
  ARM: davinci: da8xx dt: make file local symbols static
  ARM: davinci: da8xx: add remoteproc support
  ARM: socfpga: Upgrade clk driver for socfpga to make use of dts clock entries
  ARM: socfpga: Add clock entries into device tree
  ARM: socfpga: Enable soft reset
  ARM: EXYNOS: replace cpumask by the corresponding macro
  ARM: EXYNOS: handle properly the return values
  ARM: EXYNOS: factor out the idle states
  ARM: OMAP4: Enable fix for Cortex-A9 erratas
  ARM: OMAP2+: Export SoC information to userspace
  ARM: OMAP2+: SoC name and revision unification
  ARM: OMAP2+: Move common part of late init into common function
  ARM: tegra: pm: remove duplicated include from pm.c
  ARM: davinci: da850: override mmc DT node device name
  ARM: davinci: da850: add mmc DT entries
  mmc: davinci_mmc: add DT support
  ARM: SAMSUNG: check processor type before cache restoration in resume
  ...
2013-05-02 09:31:45 -07:00
Linus Torvalds
a7726350e0 ARM: arm-soc cleanup for 3.10
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
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRggUqAAoJEIwa5zzehBx3HjEQAJwp7heRs/HwTDzmzcyHkRMV
 usbaa9dHBuAZ0DzsWjLK99xEn8VWD9TvbeP6hN5gNhxko06UVza3o8PI2iV1ztMB
 9K3u2+LS5on/5cOxnsU1va16h5hBZ0ZIgNx5NY+PZ5mBY6v1U3qTjljPP62iXp63
 w+sdXeZDe/c5JvuoDRbY0OBR++3Jp8cQg7KbU78jWz3r5D2rC1zwhkf2audcRY6b
 jIWTj9M8CHynh/D6OzKqDcOYorBHNSRj0YbiWS2nnMfm+0V8nya00EPRpCPRiBUb
 sobSy1CI9Qxiih3bOf6QCfzCRzJ5hbtE0zlI8g3bqtEZ1yOsE949HrKapWHJJdIU
 JNTXrxXORAnaRhbzvSPNpp/iJBSDQRsfEETgv5BuHg/4lzTQfzElySbcgb4EeoHr
 7Zt8ZR2/Du+u76qIPqs19ES3Wx+nOEOfSDAgZmlfPvlwmlGDYvqAXoeJ006VXnhG
 JacLuD/cFnJ1w00Bcl48ZXMIsVkoRqjvsCG5q688HGXMM1lU8DfgUpQY6OCWAbdu
 kFnBinJZk+HbE8FGS8O0BoQ+oiC0YIr2XhATL66PGHq7bLHb5ycwvZ7mrfC0AN9j
 M9hqTFednwfo9wF8vSj5nMsxXwP8/mky4ECGoFvLsMYDosunrNVnAHtTgDSE+ZgO
 6kQJ1P8jBBXn2LyjF88W
 =xCAx
 -----END PGP SIGNATURE-----

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"
  ...
2013-05-02 09:03:55 -07:00
Arnd Bergmann
2058842e6d ARM: tegra: call cpu_do_idle from C code
When building a kernel for multiple CPU architecture levels,
cpu_do_idle() is a macro for an indirect function call, which
cannot be called from assembly code as Tegra does.

Adding a trivial C wrapper for this function lets us build
a tegra kernel with ARMv6 support enabled.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Joseph Lo <josephl@nvidia.com>
Cc: Stephen Warren <swarren@nvidia.com>
2013-04-29 16:51:59 +02:00
Arnd Bergmann
6cd2f8e7da ARM: tegra: core SoC support development
This branch includes major development on the core Tegra SoC support code
 in the mach-tegra directory:
 
 * SMP support for Tegra114.
 * Exposes SoC chip ID and revision through standard sysfs files.
 * System-level suspend/resume for Tegra20/30. At present, this only
   supports "LP2" mode (CPU power-down), but provides the basis to
   implement "LP0"/"LP1" (various levels of core/chip power-down) in the
   hopefully near future.
 * A minor cleanup of a duplicate include, which was introduced in this
   branch.
 
 This branch is based on the previous cleanup pull request.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRXvvtAAoJEMzrak5tbycxwdAP/ioto6+ekXniT3/Iqx9CmqG4
 kDwS6LKn8Y91ePH6R8i23U98PjLwo/HgRWSTLjfwLMAi3AOEgsJ+bUnCmPAszxkY
 Ayyv+SLbgYaR817ezACXKH0tJHF1yo07bwk76jXQwo9/d71wg8sLweQwuEA1p/u8
 ZlMniF731p7oZCNcoK680eFsurTO850GTfCrBowmOiGcPgpbllTEifwRthzQNhD7
 b0Yw55rTqz9gbhgYCN33Va6CzwD9CMaxKN28J6qPJ+j7JCXO5Qp2QCuQ5PxLTbGq
 g1n65h2p5eXQwJwnf70jGuvF9xjdPO0zNTbQVP/hkrRMpB9VA0Z6zw0s12c1H70l
 Hs/7Hn7IBzCf5jdn802knc0K0b3Q7MhUjfTU6Gmj2KWJ+SfjMQtfqRdTWKsmPXXU
 3MVxlJnqHNCjttWXXkxN0lKSgdi5HN431RwD6P9i0NPIq9RKZutw4jFeNLclVuGa
 xZMBtdDZ/U2KwL0aITkleacMHcb5/pK1z626//rB2CWRSRtVLGgye14FyEBi1U+I
 EdA16bu9U6MiwlqT0I849pXFb3l0di0+FTVadE+D3aJGjk/IWond0Fk1VayaSCX0
 X8SNUByRPtwhJRQH+oX+HDZXWW6gc2cixpYSoDmgdSXSJLBuLlAD+KPAXi2hvTUf
 REyjYXwVXVyMY/XTz5fP
 =1KXE
 -----END PGP SIGNATURE-----

Merge tag 'tegra-for-3.10-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc

From Stephen Warren <swarren@wwwdotorg.org>:

ARM: tegra: core SoC support development

This branch includes major development on the core Tegra SoC support code
in the mach-tegra directory:

* SMP support for Tegra114.
* Exposes SoC chip ID and revision through standard sysfs files.
* System-level suspend/resume for Tegra20/30. At present, this only
  supports "LP2" mode (CPU power-down), but provides the basis to
  implement "LP0"/"LP1" (various levels of core/chip power-down) in the
  hopefully near future.
* A minor cleanup of a duplicate include, which was introduced in this
  branch.

This branch is based on the previous cleanup pull request.

* tag 'tegra-for-3.10-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: tegra: pm: remove duplicated include from pm.c
  ARM: tegra: cpuidle: remove redundant parameters for powered-down mode
  ARM: tegra: pm: add platform suspend support
  ARM: dt: tegra: add bindings of power management configurations for PMC
  ARM: tegra: irq: add wake up handling
  gpio: tegra: add gpio wakeup source handling
  ARM: tegra: moving the CPU power timer function to PMC driver
  ARM: tegra: add clock source of PMC to device trees
  ARM: tegra: add speedo-based process id for Tegra114
  ARM: tegra: expose chip ID and revision
  ARM: tegra: bring up secondary CPU for Tegra114

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-09 16:32:20 +02:00
Wei Yongjun
38be85de69 ARM: tegra: pm: remove duplicated include from pm.c
Remove duplicated include.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-05 09:40:17 -06:00
Joseph Lo
4d82d0587b ARM: tegra: cpuidle: remove redundant parameters for powered-down mode
After the patch series for system suspending support, tegra_idle_lp2_last()
no longer uses its parameters cpu_on_time or cpu_off_time, so remove them.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-03 14:45:42 -06:00
Joseph Lo
c8c2e60690 ARM: tegra: pm: add platform suspend support
Adding suspend to RAM support for Tegra platform. There are three suspend
mode for Tegra. The difference were below.

* LP2: CPU voltage off
* LP1: CPU voltage off, DRAM in self-refresh
* LP0: CPU + Core voltage off, DRAM in self-refresh

After this patch, the LP2 suspend mode will be supported.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-03 14:31:41 -06:00
Joseph Lo
0337c3e0c3 ARM: tegra: moving the CPU power timer function to PMC driver
The CPU power timer set up function was related to PMC register. Now moving
it to PMC driver. And it also help to clean up the PM related code later.

The timer was calculated based on the input clock of PMC. In this patch, we
also get the clock from DT.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-03 14:30:22 -06:00
Will Deacon
6affb48264 ARM: tegra: use setup_mm_for_reboot rather than explicit pgd switch
This patch changes the Tegra PM code to use the setup_mm_for_reboot
helper rather than call cpu_switch_mm directly. This keeps things like
TLB invalidation in one place.

Cc: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-03-26 14:30:41 -06:00
Stephen Warren
02e75d6488 ARM: tegra: remove save/restore of CPU diag register
Prior to this change, {save,restore}_cpu_arch_register() collaborated to
maintain the value of the CPU diagnostic register across power cycles.
This was required to maintain any CPU errata workaround enable bits in
that register. However, now that the Tegra reset vector code always
enables all required workarounds, there is no need to save and restore
the diagnostic register; it is always explicitly programmed in the
required manner.

Hence, remove the save/restore logic.

This has the advantage that the kernel always directly controls the value
of this register every boot, rather than relying on a bootloader or other
kernel code having previously written the correct value into it. This
makes CPU0 (which was previously saved/restored) and CPUn (which should
have been set up by the reset vector) be controlled in exactly the same
way, which is easier to debug/find/...

In particular, when converting Tegra to a multi-platform kernel, the CPU0
diagnostic register value initially comes from the bootloader. Most Tegra
bootloaders don't yet enable all required CPU bug workarounds. The
previous commit updates the kernel to do so on any CPU power cycle.
However, the save/restore code ends up over-writing the value with the
old bootloader-driven value instead of the now more-likely-to-be-correct
kernel value!

Even irrespective of multi-platform conversion, this change limits the
kernel's exposure to any WARs the bootloader didn't enable for CPU0: on
the very first LP2 transition (CPU power-saving which power-cycles the
CPU), the correct value will be enabled.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-03-11 14:29:22 -06:00
Joseph Lo
5c1350bdfc ARM: tegra20: cpuidle: add powered-down state for secondary CPU
The powered-down state of Tegra20 requires power gating both CPU cores.
When the secondary CPU requests to enter powered-down state, it saves
its own contexts and then enters WFI. The Tegra20 had a limition to
power down both CPU cores. The secondary CPU must waits for CPU0 in
powered-down state too. If the secondary CPU be woken up before CPU0
entering powered-down state, then it needs to restore its CPU states
and waits for next chance.

Be aware of that, you may see the legacy power state "LP2" in the code
which is exactly the same meaning of "CPU power down".

Based on the work by:
Colin Cross <ccross@android.com>
Gary King <gking@nvidia.com>

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-28 11:20:38 -07:00
Prashant Gaikwad
89572c77cd ARM: tegra: move tegra_cpu_car.h to linux/clk/tegra.h
tegra_cpu_car_ops struct is going to be accessed from drivers/clk/tegra.
Move the tegra_cpu_car_ops to include/linux/clk/tegra.h.

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-28 11:19:06 -07:00
Joseph Lo
8c627fa658 ARM: tegra: clean up the CPUINIT section
There are some redundant codes in the CPUINIT section that was caused by
some codes not be organized well in "headsmp.S". Currently all the codes
in "headsmp.S" were put into CPUINIT section. But actually it doesn't
need to be loacted in CPUINIT section. There is no fuction access them
in CPUINIT section and we will relocate them to IRAM.

These codes also caused some unnecessary functions that access these
codes been put into CPUINIT section too. This patch clean it up and put
them into normal text section.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-28 10:21:51 -07:00
Joseph Lo
29a0e7beab ARM: tegra: retain L2 content over CPU suspend/resume
The L2 RAM is in different power domain from the CPU cluster. So the
L2 content can be retained over CPU suspend/resume. To do that, we
need to disable L2 after the MMU is disabled, and enable L2 before
the MMU is enabled. But the L2 controller is in the same power domain
with the CPU cluster. We need to restore it's settings and re-enable
it after the power be resumed.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-11-15 15:09:22 -07:00
Joseph Lo
d552920a02 ARM: tegra30: cpuidle: add powered-down state for CPU0
This is a power gating idle mode. It support power gating vdd_cpu rail
after all cpu cores in "powered-down" status. For Tegra30, the CPU0 can
enter this state only when all secondary CPU is offline. We need to take
care and make sure whole secondary CPUs were offline and checking the
CPU power gate status. After that, the CPU0 can go into "powered-down"
state safely. Then shut off the CPU rail.

Be aware of that, you may see the legacy power state "LP2" in the code
which is exactly the same meaning of "CPU power down".

Base on the work by:
Scott Williams <scwilliams@nvidia.com>

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-11-15 15:09:22 -07:00
Joseph Lo
d457ef358f ARM: tegra30: cpuidle: add powered-down state for secondary CPUs
This supports power-gated idle on secondary CPUs for Tegra30. The
secondary CPUs can go into powered-down state independently. When
CPU goes into this state, it saves it's contexts and puts itself
to flow controlled WFI state. After that, it will been power gated.

Be aware of that, you may see the legacy power state "LP2" in the
code which is exactly the same meaning of "CPU power down".

Based on the work by:
Scott Williams <scwilliams@nvidia.com>

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-11-15 15:09:21 -07:00