Commit Graph

44 Commits

Author SHA1 Message Date
Joseph Lo 59b0f6825c ARM: tegra30: add CPU hotplug support
Hotplug function put CPUs in offline or online state at runtime.
When the CPU been put in the offline state, it was been clock and
power gated. Except primary CPU other CPUs can be hotplugged.

Based on the work by:
Scott Williams <scwilliams@nvidia.com>
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>
2012-09-13 11:41:06 -06:00
Prashant Gaikwad 1dfacc1613 ARM: tegra: Remove duplicate code
Remove Tegra legacy clock framework code.

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-09-06 11:47:20 -06:00
Prashant Gaikwad 96a1bd1e11 ARM: tegra: Add clk_tegra structure and helper functions
Add Tegra platform specific clock structure clk_tegra and
some helper functions for generic clock framework.

struct clk_tegra is the single strcture used for all types of
clocks. reset and cfg_ex ops moved to clk_tegra from clk_ops.

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-09-06 11:47:20 -06:00
Laxman Dewangan b861c275ea ARM: tegra: apbio access using dma for tegra20 only
The Tegra20 HW issue with accessing APBIO registers (such
as fuse registers) directly from the CPU concurrently with
APB DMA accesses has been fixed in Tegra30 and later chips.

Access these registers directly from the CPU on Tegra30
and later, and apply the workaround only for Tegra20.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Chaitanya Bandi <bandik@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-07-06 11:48:56 -06:00
Linus Torvalds f465d145d7 arm-soc: sweeping late_initcall cleanup
This is a patch series from Shawn Guo that moves from individual
 late_initcalls() to using a member in the machine structure to invoke
 a platform's late initcalls.
 
 This cleanup is a step in the move towards multiplatform kernels since
 it would reduce the need to check for compatible platforms in each and
 every initcall.
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Merge tag 'cleanup-initcall' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull sweeping late_initcall cleanup for arm-soc from Olof Johansson:
 "This is a patch series from Shawn Guo that moves from individual
  late_initcalls() to using a member in the machine structure to invoke
  a platform's late initcalls.

  This cleanup is a step in the move towards multiplatform kernels since
  it would reduce the need to check for compatible platforms in each and
  every initcall."

Fix up trivial conflicts in arch/arm/mach-{exynos/mach-universal_c210.c,
imx/mach-cpuimx51.c, omap2/board-generic.c} due to changes nearby (and,
in the case of cpuimx51.c the board support being deleted)

* tag 'cleanup-initcall' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: ux500: use machine specific hook for late init
  ARM: tegra: use machine specific hook for late init
  ARM: shmobile: use machine specific hook for late init
  ARM: sa1100: use machine specific hook for late init
  ARM: s3c64xx: use machine specific hook for late init
  ARM: prima2: use machine specific hook for late init
  ARM: pnx4008: use machine specific hook for late init
  ARM: omap2: use machine specific hook for late init
  ARM: omap1: use machine specific hook for late init
  ARM: msm: use machine specific hook for late init
  ARM: imx: use machine specific hook for late init
  ARM: exynos: use machine specific hook for late init
  ARM: ep93xx: use machine specific hook for late init
  ARM: davinci: use machine specific hook for late init
  ARM: provide a late_initcall hook for platform initialization
2012-05-26 13:14:01 -07:00
Olof Johansson 7a3252f837 Merge branch 'for-3.5/tegra30-audio' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/drivers
By Stephen Warren (5) and Peter De Schrijver (1)
via Stephen Warren
* 'for-3.5/tegra30-audio' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: dt: tegra cardhu: basic audio support
  ARM: dt: tegra30.dtsi: Add audio-related nodes
  ARM: tegra: add AUXDATA required for audio
  ARM: tegra: set up audio clocks for tegra30 dt
  ARM: tegra: Initialize pll_p_out1
  ARM: tegra: provide clock aliases for AHUB configlink

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-09 23:48:52 -07:00
Shawn Guo 390e0cfd32 ARM: tegra: use machine specific hook for late init
Cc: Colin Cross <ccross@android.com>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2012-05-08 20:36:36 +08:00
Stephen Warren 9abafa021e ARM: tegra: change pll_p_out4's rate to 24MHz
pll_p_out4 is used on all/most Tegra boards to drive the cdev2 output pin
to provide a reference clock to a ULPI USB PHY. This reference clock must
run at 24MHz, and the cdev2 output has no additional dividers.

Remove board-paz00.c's now-duplicate initialization of this clock.

Reported-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-04-25 15:22:09 -06:00
Stephen Warren 7ff4db0967 ARM: tegra: fix pclk rate
Commit 40f9cf0 "ARM: tegra: reparent sclk to pll_c_out1" changed the
rate of hclk. Since pclk is derived from that, and only has integer
dividers, the pclk rate needs to change in the same fashion, from 54MHz
to 60MHz.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-04-25 15:22:09 -06:00
Stephen Warren 60f975b98c ARM: tegra: reparent sclk to pll_c_out1
pll_p_out4 needs to be used for other purposes. Reparent sclk so that
it runs from pll_c. Change sclk's rate to 120MHz from 108MHz since this
is the lowest precise rate that can be achieved by dividing the pll_c
rate without reducing the sclk rate. (600/5=120, 600/5.5=109.0909...,
600/6=100).

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-04-25 15:22:09 -06:00
Peter De Schrijver 6437626928 ARM: tegra: Initialize pll_p_out1
pll_a uses pll_p_out1 as its parent. Therefore this clock needs to be
initialized to make sure pll_a has a known input clock. Failure to do so
will cause the system to crash early in the bootup.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-04-25 15:22:01 -06:00
Linus Torvalds 4bb2d1009f ARM: More SoC support updates
This branch contains a handful of updates of SoC base code that had
 dependencies on other external trees that have now been merged:
 
 * Support for the new EXYNOS5250 SoC from Samsung
 * SMP and power domain support for Tegra3 from NVIDIA
 * ux500 updates for exporting SoC information through sysfs
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Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: More SoC support updates" from Olof Johansson:
 "This branch contains a handful of updates of SoC base code that had
  dependencies on other external trees that have now been merged:

   * Support for the new EXYNOS5250 SoC from Samsung
   * SMP and power domain support for Tegra3 from NVIDIA
   * ux500 updates for exporting SoC information through sysfs"

Fix up trivial merge conflicts as per Olof.

* tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (30 commits)
  ARM: mach-shmobile: ap4evb: Reserve DMA memory for the frame buffer
  ARM: EXYNOS: Fix compilation error with mach-exynos4-dt board
  ARM: dts: add initial dts file for EXYNOS5250, SMDK5250
  ARM: EXYNOS: add support device tree enabled board file for EXYNOS5
  ARM: EXYNOS: add support ARCH_EXYNOS5 for EXYNOS5 SoCs
  ARM: EXYNOS: add support get_core_count() for EXYNOS5250
  ARM: EXYNOS: support EINT for EXYNOS4 and EXYNOS5
  ARM: EXYNOS: add interrupt definitions for EXYNOS5250
  ARM: EXYNOS: add support for EXYNOS5250 SoC
  ARM: EXYNOS: add support uart for EXYNOS4 and EXYNOS5
  ARM: EXYNOS: add initial setup-i2c0 for EXYNOS5
  ARM: EXYNOS: add clock part for EXYNOS5250 SoC
  ARM: EXYNOS: use exynos_init_uarts() instead of exynos4_init_uarts()
  ARM: EXYNOS: to declare static for mach-exynos/common.c
  ARM: EXYNOS: Add clkdev lookup entry for lcd clock
  ARM: dt: Explicitly configure all serial ports on Tegra Cardhu
  ARM: tegra: support for secondary cores on Tegra30
  ARM: tegra: support for Tegra30 CPU powerdomains
  ARM: tegra: add support for Tegra30 powerdomains
  ARM: tegra: export tegra_powergate_is_powered()
  ...
2012-03-28 12:24:40 -07:00
Linus Torvalds 34800598b2 ARM: driver specific updates
These are all specific to some driver. They are typically the platform
 side of a change in the drivers directory, such as adding a new driver
 or extending the interface to the platform. In cases where there is no
 maintainer for the driver, or the maintainer prefers to have the
 platform changes in the same branch as the driver changes, the patches
 to the drivers are included as well.
 
 A much smaller set of driver updates that depend on other branches
 getting merged first will be sent later.
 
 The new export of tegra_chip_uid conflicts with other changes in fuse.c.
 In rtc-sa1100.c, the global removal of IRQF_DISABLED conflicts with
 the cleanup of the interrupt handling of that driver.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: driver specific updates" from Arnd Bergmann:
 "These are all specific to some driver.  They are typically the
  platform side of a change in the drivers directory, such as adding a
  new driver or extending the interface to the platform.  In cases where
  there is no maintainer for the driver, or the maintainer prefers to
  have the platform changes in the same branch as the driver changes,
  the patches to the drivers are included as well.

  A much smaller set of driver updates that depend on other branches
  getting merged first will be sent later.

  The new export of tegra_chip_uid conflicts with other changes in
  fuse.c.  In rtc-sa1100.c, the global removal of IRQF_DISABLED
  conflicts with the cleanup of the interrupt handling of that driver.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fixed up aforementioned trivial conflicts.

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (94 commits)
  ARM: SAMSUNG: change the name from s3c-sdhci to exynos4-sdhci
  mmc: sdhci-s3c: add platform data for the second capability
  ARM: SAMSUNG: support the second capability for samsung-soc
  ARM: EXYNOS: add support DMA for EXYNOS4X12 SoC
  ARM: EXYNOS: Add apb_pclk clkdev entry for mdma1
  ARM: EXYNOS: Enable MDMA driver
  regulator: Remove bq24022 regulator driver
  rtc: sa1100: add OF support
  pxa: magician/hx4700: Convert to gpio-regulator from bq24022
  ARM: OMAP3+: SmartReflex: fix error handling
  ARM: OMAP3+: SmartReflex: fix the use of debugfs_create_* API
  ARM: OMAP3+: SmartReflex: micro-optimization for sanity check
  ARM: OMAP3+: SmartReflex: misc cleanups
  ARM: OMAP3+: SmartReflex: move late_initcall() closer to its argument
  ARM: OMAP3+: SmartReflex: add missing platform_set_drvdata()
  ARM: OMAP3+: hwmod: add SmartReflex IRQs
  ARM: OMAP3+: SmartReflex: clear ERRCONFIG_VPBOUNDINTST only on a need
  ARM: OMAP3+: SmartReflex: Fix status masking in ERRCONFIG register
  ARM: OMAP3+: SmartReflex: Add a shutdown hook
  ARM: OMAP3+: SmartReflex Class3: disable errorgen before disable VP
  ...

Conflicts:
	arch/arm/mach-tegra/Makefile
	arch/arm/mach-tegra/fuse.c
	drivers/rtc/rtc-sa1100.c
2012-03-27 16:41:24 -07:00
Linus Torvalds 281b05392f ARM: SoC specific updates
These changes are all specific to an soc family or the code for
 one soc. Lots of work for Tegra3 this time, but also a lot of other
 platforms. There will be another (smaller) set of soc patches later in
 the merge window for stuff that has dependencies on external trees or
 that was sent just before the merge window opened.
 
 The asoc tree added a few devices to the i.mx platform, which conflict
 with other devices added in the same place here.
 
 The tegra Makefile conflicts between a number of branches, mostly because
 of changes regarding localtimer.c, which was removed in the end.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: SoC specific updates" from Arnd Bergmann:
 "These changes are all specific to an soc family or the code for one
  soc.  Lots of work for Tegra3 this time, but also a lot of other
  platforms.  There will be another (smaller) set of soc patches later
  in the merge window for stuff that has dependencies on external trees
  or that was sent just before the merge window opened.

  The asoc tree added a few devices to the i.mx platform, which conflict
  with other devices added in the same place here.

  The tegra Makefile conflicts between a number of branches, mostly
  because of changes regarding localtimer.c, which was removed in the
  end.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fix up some trivial conflicts, including the mentioned Tegra Makefile.

* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits)
  ARM: EXYNOS: fix cycle count for periodic mode of clock event timers
  ARM: EXYNOS: add support JPEG
  ARM: EXYNOS: Add DMC1, allow PPMU access for DMC
  ARM: SAMSUNG: Correct MIPI-CSIS io memory resource definition
  ARM: SAMSUNG: fix __init attribute on regarding s3c_set_platdata()
  ARM: SAMSUNG: Add __init attribute to samsung_bl_set()
  ARM: S5PV210: Add usb otg phy control
  ARM: S3C64XX: Add usb otg phy control
  ARM: EXYNOS: Enable l2 configuration through device tree
  ARM: EXYNOS: remove useless code to save/restore L2
  ARM: EXYNOS: save L2 settings during bootup
  ARM: S5P: add L2 early resume code
  ARM: EXYNOS: Add support AFTR mode on EXYNOS4210
  ARM: mx35: Setup the AIPS registers
  ARM: mx5: Use common function for configuring AIPS
  ARM: mx3: Setup AIPS registers
  ARM: mx3: Let mx31 and mx35 enter in LPM mode in WFI
  ARM: defconfig: imx_v6_v7: build in REGULATOR_FIXED_VOLTAGE
  ARM: imx: update imx_v6_v7_defconfig
  ARM: tegra: Demote EMC clock inconsistency BUG to WARN
  ...
2012-03-27 16:14:44 -07:00
Arnd Bergmann 38abdcd0d0 Merge branch 'for-armsoc' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into next/soc2
Conflicts:
	arch/arm/mach-tegra/common.c
	arch/arm/mach-ux500/devices-common.c

This resolves two conflicts and lets us merge the exynos5 branch
cleanly.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-15 21:05:52 +00:00
Arnd Bergmann 7cb7f82611 Merge tag 'tegra-soc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into tegra/soc-drivers
Tegra SoC driver support.

Some device tree conversions, some new drivers. and a fix for an issue
introduced in Grant Likely's irq_domain conversion in his tree. Because
of that, this branch depends on his branch to build (but not to merge):

git://git.secretlab.ca/git/linux-2.6.git irqdomain/next

* tag 'tegra-soc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra: (34 commits)
  ARM: tegra: uncompress.h: Don't depend on kernel headers
  gpio: tegra: Fix build issue due to irq_domain rework.
  ARM: tegra: Remove duplicate PMU interrupt inversion code
  ARM: tegra: Add a simple PMC driver
  ARM: tegra: dma: not required to move requestor when stopping.
  ARM: tegra: Fix EMC pdata initialization from registers
  gpio: tegra: Parameterize the number of banks
  gpio: tegra: Dynamically allocate IRQ base, and support DT
  ARM: tegra: Remove use of TEGRA_GPIO_TO_IRQ
  ARM: tegra: Pass uncompress.h UART selection to DEBUG_LL
  ARM: tegra: uncompress.h: Choose a UART at runtime
  ARM: tegra: uncompress.h: Store UART address in a variable
  ARM: tegra: Introduce define DEBUG_UART_SHIFT
  ARM: tegra: Support Tegra30 in decompressor UART setup
  ARM: tegra: Pause DMA when reading transfer count
  ARM: tegra: emc: device tree support
  ARM: tegra: emc: convert tegra2_emc to a platform driver
  ARM: tegra: fuse: add bct strapping reading
  ARM: tegra: fuse: add functions to access chip revision
  ARM: tegra: fuse: use apbio dma for register access
  ...

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-04 21:03:30 +00:00
Arnd Bergmann c71656c018 Merge tag 'tegra-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into tegra/soc
From: Olof Johansson <olof@lixom.net>

SoC new development for tegra SoCs, mostly tegra30 core support.

It also includes one stray bugfix that was misapplied (should have been
in soc-drivers), but it went out to the stable branches before I noticed
so I've left it in.

* tag 'tegra-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra:
  ARM: tegra: Demote EMC clock inconsistency BUG to WARN
  ARM: tegra: Avoid compiling cpuidle code when not configured
  ARM: tegra: cpuidle driver for tegra
  ARM: tegra: assembler code for LP3
  ARM: tegra: definitions for flow controller
  ARM: tegra: initialize basic system clocks
  ARM: tegra: enable tegra30 clock framework
  ARM: tegra: implement basic tegra30 clock framework
  ARM: tegra: add support for new clock framework features
  ARM: tegra: add support for tegra30 interrupts

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-03-04 20:57:06 +00:00
Peter De Schrijver f6a1ba6736 ARM: tegra: Enable CPUIdle on Tegra20
As the LP3 code also works for Tegra20, we can enable cpuidle for Tegra20.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-03-04 11:17:17 -08:00
Peter De Schrijver 65fe31da5c ARM: tegra: support for Tegra30 CPU powerdomains
Secondary CPU powerdomains can be powergated on Tegra30. Add the necessary
functions to do this. This will be used to boot the secondary CPUs later on.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-26 14:44:45 -08:00
Peter De Schrijver cec60064e4 ARM: tegra: initialize Tegra chipid early
Secondary core bringup relies on the Tegra chipid to distinguish between
Tegra variants. Therefore this data needs to be available early on.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-26 14:44:19 -08:00
Olof Johansson 0f830e5c90 Merge branch 'for-3.4/soc-drivers' into for-3.4/t30-smp
Conflicts:
	arch/arm/mach-tegra/Makefile
2012-02-26 14:43:43 -08:00
Stephen Warren d3b8bdd5f9 ARM: tegra: Add a simple PMC driver
This PMC driver is enough to parse the nvidia,invert-interrupt property
from device tree, and configure the PMC's to honor that.

In the future, this file could expand to centralize all other PMC accesses
within the mach-tegra code.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 18:25:01 -08:00
Stephen Warren 6d7d7b3ecd ARM: tegra: Pass uncompress.h UART selection to DEBUG_LL
uncompress.h now saves the selected UART's physical address in Tegra's
IRAM, along with a cookie to indicate validity.

The first time it's run, macro addruart in debug-macro.S looks for this
cookie, and if it's present, uses the UART address stored there. If not,
the static value TEGRA_DEBUG_UART_BASE is used, as was previous behaviour.
The static behaviour will thus be used when not booting using a zImage.

This work was inspired by work by Doug Anderson <dianders@chromium.org>;
see http://lkml.org/lkml/2011/9/26/284. However, this patch relies on
the data passing describe above, rather than duplicating the UART
selection logic in debug-macro.S; the latest selection logic is more
complex due to the need to check reset/clock bits too.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Doug Anderson <dianders@chromium.org>
Acked-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 18:25:00 -08:00
Peter De Schrijver 7ff43eeabd ARM: tegra: enable tegra30 clock framework
Add init calls for clocks on tegra30.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-06 09:16:15 -08:00
Nicolas Pitre daa14d5e60 ARM: mach-tegra: properly disable CPU idle call
Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
2012-01-20 18:55:19 -05:00
Arnd Bergmann 23c4c1c7b0 Merge branch 'depends/rmk/for-linus' into next/soc
Conflicts:
	arch/arm/mach-tegra/board-dt-tegra20.c
	arch/arm/mach-tegra/common.c
2012-01-07 20:53:13 +00:00
Russell King abea3f2ce0 ARM: restart: tegra: use new restart hook
Hook these platforms restart code into the new restart hook rather
than using arch_reset().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-05 12:57:20 +00:00
Stephen Warren 6cc04a4420 arm/tegra: Compile tegra_dt_init_irq only when CONFIG_OF
This fixes a build break attempting to build a Tegra20-only kernel
without device tree enabled.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-19 18:07:22 -08:00
Peter De Schrijver 44107d8b7e arm/tegra: implement support for tegra30
Add support for tegra30 SoC. This includes a device tree compatible type for
this SoC ("nvidia,tegra30") and adds L2 cache initialization for this new SoC.
The clock framework is still missing, which prevents most drivers from working.
The basic IRQs are the same, so remove the dependency on
CONFIG_ARCH_TEGRA_2x_SOC.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-17 20:15:35 -08:00
Peter De Schrijver 01548673fa arm/tegra: generalize L2 cache initialization
Generalize L2 cache initialization and discover L2 cache associativity at
runtime.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-17 20:15:22 -08:00
Peter De Schrijver 9bfc3f0d48 arm/tegra: use PMC reset
Use PMC reset rather then CAR system reset as recommended by the hardware
team.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-17 20:15:19 -08:00
Peter De Schrijver c37c07ddf2 arm/tegra: prepare early init for multiple tegra variants
This patch splits the early init code in a common and a tegra20 specific part.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2011-12-17 20:15:13 -08:00
Olof Johansson 74ae6c3cc5 ARM: tegra: tegra_init_cache should be static
Not exported and not used externally.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-10-13 14:08:28 -07:00
Stephen Warren dc54c23bb0 ARM: Tegra: Make tegra_dma_init a postcore_initcall
The following commit makes the Tegra APB DMA engine fail to initialize
correctly: 0cf6230af9
ARM: tegra: Move tegra_common_init to tegra_init_early

The reason is that tegra_init_early_ calls tegra_dma_init which calls
request_threaded_irq, which fails since the IRQ hasn't yet been marked
valid; that only happens in tegra_init_irq, which gets called after
tegra_init_early.

This used to work OK, since tegra_init_early was tegra_common_init, which
got called after tegra_init_irq, basically from the beginning of
tegra_harmony_init.

Solve this by converting tegra_dma_init to a postcore_initcall. This makes
it execute late enough that IRQs are marked valid, and avoids having to
add it back to every machine's init function.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-23 14:00:11 -08:00
Colin Cross cd51d0edec ARM: tegra: common: Enable core clocks
Enable the cpu, emc (memory controller) and csite (debug and
trace controller) clocks during init to prevent them from
being disabled by the bootloader clock disabling code.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22 14:48:37 -08:00
Colin Cross 0cf6230af9 ARM: tegra: Move tegra_common_init to tegra_init_early
Move tegra_common_init to tegra_init_early, and set it
as the init_early entry in the machine struct.
Initializes the clocks earlier so that timers can enable
their clocks.

Also reorders the members in the Harmony and Trimslice
boards' machine structs to match the order they are
called in.

Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
2011-02-22 11:25:12 -08:00
Simon Glass 375b19cd34 ARM: tegra: Fix hang on reboot
This seems to be a regression in 2.6.37.

We cannot use writel() here since the resulting wmb() calls l2x0_cache_sync()
which uses a spinlock and L1 cache may be off at this point.

http://lists.infradead.org/pipermail/linux-arm-kernel/2011-February/041909.html

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-20 20:04:16 -08:00
Colin Cross 535371c3fb ARM: tegra: Use writel_relaxed in tegra_init_cache
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 17:50:43 -08:00
Colin Cross 699fe145d6 ARM: tegra: Allow overriding arch_reset
Signed-off-by: Colin Cross <ccross@android.com>
2011-02-10 17:50:41 -08:00
Colin Cross 4de3a8fa33 [ARM] tegra: Add APB DMA support
The APB DMA block handles DMA transfers to and from some peripherals
in the Tegra SOC.  It reads from sequential addresses on the memory
bus, and writes repeatedly to the same address on the APB bus.

Two transfer modes are supported, oneshot for transferring a known
size to or from a peripheral, and continuous for streaming data.
In continuous mode, a callback occurs when the buffer is half full
to allow the existing data to be handled and a new request queued.x

v2 changes:
	dma API no longer uses PTR_ERR

Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:35 -07:00
Colin Cross 8486bddc09 [ARM] tegra: common: Update common clock init table
Renames clocks in the clock init table to match the datasheet names

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:22 -07:00
Colin Cross 73625e3e2e [ARM] tegra: Add support for reading fuses
The Tegra SOC contains fuses to identify the CPU type and
bin, and a unique id.  The CPU info is required to determine
the correct voltages for each cpu and core frequency.

Signed-off-by: Colin Cross <ccross@android.com>
2010-10-21 18:12:09 -07:00
Colin Cross d861196163 [ARM] tegra: Add clock support
v2: fixes from Russell King:
	- include linux/io.h instead of asm/io.h
	- fix whitespace in Kconfig
	- Use spin_lock_init to initialize lock
	- Return -ENOSYS instead of BUG for unimplemented clock ops
	- Use proper return values in tegra2 clock ops
    additional changes:
	- Rename some clocks to match dev_ids
	- add rate propagation
	- add debugfs entries
	- add support for clock listed in clk_lookup under multiple dev_ids
v3:
	- Replace per-clock locking with global clock lock
	- Autodetect clock state on init
	- Let clock dividers pick next lower possible frequency
	- Add support for clock init tables
	- Minor bug fixes
	- Fix checkpatch issues

Signed-off-by: Colin Cross <ccross@android.com>
2010-08-05 14:51:42 -07:00
Erik Gilling c5f800656b [ARM] tegra: initial tegra support
v2: Fixes from Mike Rapoport
	- remove unused header files (mach/dma.h and mach/nand.h)
	- remove tegra 1 references from Makefile.boot

v2: fixes from Russell King
	- remove mach/io.h include from mach/iomap.h
	- fix whitespace in Kconfig

v2: from Colin Cross
	- fix invalid immediate in debug-macro.S

v3:
	- allow selection of multiple boards

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
2010-08-05 14:51:42 -07:00