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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-21 19:53:59 +08:00
Commit Graph

147 Commits

Author SHA1 Message Date
Ulf Hansson
1c73491a57 clk: ux500: Register i2c clock lookups for u8500
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-11-09 17:04:10 -08:00
Tony Prisk
973e1d1de0 CLK: vt8500: Fix SDMMC clk special cases
This patch adds some additional handling for the SDMMC special case
in round_rate and set_rate which results in invalid divisor messages
at boot time.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-11-09 17:03:55 -08:00
Wei Yongjun
0de9f23a28 clk: fix return value check in bcm2835_init_clocks()
In case of error, the function clk_register_fixed_rate() returns
ERR_PTR() and never returns NULL. The NULL test in the return value
check should be replaced with IS_ERR().

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-11-09 16:49:15 -08:00
Ulf Hansson
d6e99fa4f4 clk: ux500: Add armss clk and fixup smp_twd clk for u8500
The new armss clk is a prcmu_scalable_rate clk which represents
the ARMSS clk. This then makes it possible to convert the smp_twd
clk to a fixed factor clock type, using a fixed divider of 2 and
with the armss clk as parent.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-11-09 16:47:07 -08:00
Ulf Hansson
a816d250e8 clk: ux500: Support for prcmu_scalable_rate clock
The prcmu_scalable_rate clock can change rate but is not gateable.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-11-09 16:47:06 -08:00
Stephen Boyd
9be9d482bc clk: wm831x: Use devm_clk_register() to simplify code
Move this driver to use devm_clk_register() to simplify some
error paths and reduce lines of code.

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:12:55 -07:00
Stephen Boyd
46c8773a58 clk: Add devm_clk_{register,unregister}()
Some clock drivers can be simplified if devres takes care of
unregistering any registered clocks along error paths. Introduce
devm_clk_register() so that clock drivers get unregistration for
free along with simplified error paths.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:12:46 -07:00
Stephen Boyd
980f58a45e clk: wm831x: Fix clk_register() error code checking
clk_register() returns an ERR_PTR upon failure, not NULL. Fix
these error paths.

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:12:33 -07:00
Pawel Moll
bcd6f569e8 clk: Common clocks implementation for Versatile Express
This patch adds a DT and non-DT based implementation of
the common clock infrastructure for Versatile Express
platform. It registers (statically or using DT) all
required fixed clocks, initialises motherboard's SP810
cell (that provides clocks for SP804 timers) and
explicitly registers VE "osc" driver, to make the
clock generators available early.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:08:03 -07:00
Pawel Moll
ed27ff1db8 clk: Versatile Express clock generators ("osc") driver
This driver provides a common clock framework hardware driver
for Versatile Express clock generators (a.k.a "osc") controlled
via the config bus.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:07:51 -07:00
Peter Ujfalusi
f9f8c0438d CLK: clk-twl6040: Initial clock driver for OMAP4+ McPDM fclk clock
On OMAP4+ platforms the functional clock for the McPDM IP is suplied by
the twl6040 codec (bit clock on the PDM bus).
This common clock driver for twl6040 will register the mcpdm_fclk clock to
be used by the McPDM driver to make sure that the needed clocks are
available when needed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:07:42 -07:00
Wei Yongjun
2968f85185 clk: fix return value check in sirfsoc_of_clk_init()
In case of error, the function clk_register() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check
should be replaced with IS_ERR().

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:07:32 -07:00
Wei Yongjun
cdfed3b21f clk: fix return value check in of_fixed_clk_setup()
In case of error, the function clk_register_fixed_rate() returns
ERR_PTR() not NULL pointer. The NULL test in the return value
check should be replaced with IS_ERR().

dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:06:19 -07:00
Ulf Hansson
2f896ac0be clk: ux500: Update sdmmc clock to 100MHz for u8500
For u8500 and using 100MHz as the frequency also requires the ape opp 100
voltage, thus use the prcmu_opp_volt_scalable clock type.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:06:07 -07:00
Ulf Hansson
b0ea0fc753 clk: ux500: Support prcmu ape opp voltage clock
Some scalable prcmu clocks needs to be handled in conjuction with the
ape opp 100 voltage. A new prcmu clock type clk_prcmu_opp_volt_scalable
is implemented to handle this.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:05:53 -07:00
Stephen Boyd
2ac6b1f50a clk: Don't return negative numbers for unsigned values with !clk
Some of the helper functions return negative error codes if
passed a NULL clock. This can lead to confusing behavior when the
expected return value is unsigned. Fix up these accessors so that
they return unsigned values (or bool in the case of is_enabled).
This way we can't interpret NULL clocks as having valid and
interesting values.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:05:03 -07:00
Viresh Kumar
7d4998f71b clk: SPEAr: Vco-pll: Fix compilation warning
Currently we are getting following warning for SPEAr clk-vco-pll.

"warning: i is used uninitialized in this function."

This is because we are getting value of i by passing its pointer to another
routine.

The variables here are really not used uninitialized.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-10-29 11:04:34 -07:00
Linus Torvalds
7fe0b14b72 spi: Updates for v3.7
No framework work here, only a bunch of driver updates of varying sizes:
 
 - Factoring out of the core hardware support from the MXS MMC driver by
   Marek Vasut to allow the hardware to also be used for SPI.
 - Lots of error handling cleanups from Guenter Roeck
 - Removal of the existing Tegra driver which is quite comprehensively
   broken as detailed in the changelog for the removal.
 - DT suppport for the PL022 and GPIO drivers.
 - pinctrl support for OMAP and PL022.
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Merge tag 'spi-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc

Pull spi updates from Mark Brown:
 "No framework work here, only a bunch of driver updates of varying
  sizes:

   - Factoring out of the core hardware support from the MXS MMC driver
     by Marek Vasut to allow the hardware to also be used for SPI.
   - Lots of error handling cleanups from Guenter Roeck
   - Removal of the existing Tegra driver which is quite comprehensively
     broken as detailed in the changelog for the removal.
   - DT suppport for the PL022 and GPIO drivers.
   - pinctrl support for OMAP and PL022."

Pulling from Mark Brown as Grant Likely is still busy moving.

* tag 'spi-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc: (53 commits)
  spi: remove completely broken Tegra driver
  spi/imx: set the inactive state of the clock according to the clock polarity
  spi/pl022: get/put resources on suspend/resume
  spi/pl022: use more managed resources
  spi/pl022: Devicetree support w/o platform data
  spi/s3c64xx: Don't free controller_data on non-dt platforms
  spi: omap2-mcspi: add pinctrl support
  spi/pl022: adopt pinctrl support
  spi: omap2-mcspi: Cleanup the omap2_mcspi_txrx_dma function
  spi/gpio: Fix stub for spi_gpio_probe_dt()
  spi/mxs: Make the SPI block clock speed configurable via DT
  spi: spi-sh-hspi: drop frees of devm_ alloc'd data
  spi/pl022: Fix chipselects pointer computation
  spi: spi-tle62x0: Use module_spi_driver macro
  mxs/spi: Rework the mxs_ssp_timeout to be more readable
  mxs/spi: Decrement the DMA/PIO border
  mxs/spi: Increment the transfer length only if transfer succeeded
  mxs/spi: Fix issues when doing long continuous transfer
  spi: spi-gpio: Add DT bindings
  spi: spi-gpio: store chipselect information in private structure
  ...
2012-10-02 17:26:42 -07:00
Linus Torvalds
84be4ae2c0 ARM: soc: soc-specific updates, take 2
This branch converts the MXS Freescale platform to use irqdomains and
 sparse IRQ, in preparation for DT probing and multiplatform kernels.
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Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM soc-specific updates, take 2 from Olof Johansson:
 "This branch converts the MXS Freescale platform to use irqdomains and
  sparse IRQ, in preparation for DT probing and multiplatform kernels."

* tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: mxs: remove mach/irqs.h
  ARM: mxs: select SPARSE_IRQ
  ARM: mxs: adopt irq_domain support for icoll driver
  ARM: mxs: select MULTI_IRQ_HANDLER
  ARM: mxs: retrieve timer irq from device tree
  gpio/mxs: adopt irq_domain support for mxs gpio driver
2012-10-01 18:35:58 -07:00
Linus Torvalds
2a2bf85f05 ARM: soc: device tree updates
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
  ...
2012-10-01 18:28:06 -07:00
Linus Torvalds
11801e9de2 ARM: soc: soc-specific updates
Most notable here is probably the addition of basic support for the
 BCM2835, an SoC used in some of the Roku 2 players as well as the
 much-hyped Raspberry Pi, cleaned up and contributed by Stephen
 Warren. It's still early days on mainline support, with just the
 basics working. But it has to start somewhere!
 
 Beyond that there's some conversions of clock infrastructure on tegra
 to common clock, misc updates for several other platforms, and OMAP
 now has its own bus (under drivers/bus) to manage its devices through.
 
 This branch adds two new directories outside of arch/arm:
 drivers/irqchip for new irq controllers, and drivers/bus for the above
 OMAP bus. It's expected that some of the other platforms will migrate
 parts of their platforms to those directories over time as well.
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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 Olof Johansson:
 "Most notable here is probably the addition of basic support for the
  BCM2835, an SoC used in some of the Roku 2 players as well as the
  much-hyped Raspberry Pi, cleaned up and contributed by Stephen Warren.
  It's still early days on mainline support, with just the basics
  working.  But it has to start somewhere!

  Beyond that there's some conversions of clock infrastructure on tegra
  to common clock, misc updates for several other platforms, and OMAP
  now has its own bus (under drivers/bus) to manage its devices through.

  This branch adds two new directories outside of arch/arm:
  drivers/irqchip for new irq controllers, and drivers/bus for the above
  OMAP bus.  It's expected that some of the other platforms will migrate
  parts of their platforms to those directories over time as well."

Fix up trivial conflicts with the clk infrastructure changes.

* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (62 commits)
  ARM: shmobile: add new __iomem annotation for new code
  ARM: LPC32xx: Support GPI 28
  ARM: LPC32xx: Platform update for devicetree completion of spi-pl022
  ARM: LPC32xx: Board cleanup
  irqchip: fill in empty Kconfig
  ARM: SAMSUNG: Add check for NULL in clock interface
  ARM: EXYNOS: Put PCM, Slimbus, Spdif clocks to off state
  ARM: EXYNOS: Add bus clock for FIMD
  ARM: SAMSUNG: Fix HDMI related warnings
  ARM: S3C24XX: Add .get_rate callback for "camif-upll" clock
  ARM: EXYNOS: Fix incorrect help text
  ARM: EXYNOS: Turn off clocks for NAND, OneNAND and TSI controllers
  ARM: OMAP: AM33xx hwmod: fixup SPI after platform_data move
  MAINTAINERS: add an entry for the BCM2835 ARM sub-architecture
  ARM: bcm2835: instantiate console UART
  ARM: bcm2835: add stub clock driver
  ARM: bcm2835: add system timer
  ARM: bcm2835: add interrupt controller driver
  ARM: add infra-structure for BCM2835 and Raspberry Pi
  ARM: tegra20: add CPU hotplug support
  ...
2012-10-01 18:24:44 -07:00
Linus Torvalds
2c0c86d5b6 The common clk framework changes for 3.7 are dominated by ARM platform
ports to the framework along with one MIPS port, one MFD port, one minor
 framework enhancement and one helper function for platforms expressing
 their clock data through device tree.
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Merge tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux

Pull clk framework update from Michael Turquette:
 "The common clk framework changes for 3.7 are dominated by ARM platform
  ports to the framework along with one MIPS port, one MFD port, one
  minor framework enhancement and one helper function for platforms
  expressing their clock data through device tree."

* tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux:
  clk: add of_clk_src_onecell_get() support
  clk: ux500: Define smp_twd clock for u8500
  mfd: dbx500: Provide a more accurate smp_twd clock
  clk: ux500: Support for prmcu_rate clock
  clk: Provide option for clk_get_rate to issue hw for new rate
  clock: max77686: Add driver for Maxim 77686 32Khz crystal oscillator.
  ARM: ux500: Switch to use common clock framework
  clk: ux500: Clock definitions for u8500
  clk: ux500: First version of clock definitions for ux500
  clk: ux500: Adapt PRCMU and PRCC clocks for common clk
  clk: versatile: make config option boolean
  clk: add Loongson1B clock support
  arm: mmp: make all SOCs use common clock by default
  clk: mmp: add clock definition for mmp2
  clk: mmp: add clock definition for pxa910
  clk: mmp: add clock definition for pxa168
  clk: mmp: add mmp specific clocks
  clk: convert ARM RealView to common clk
  clk: prima2: move from arch/arm/mach to drivers/clk
  ARM: PRIMA2: convert to common clk and finish full clk tree
2012-10-01 12:09:04 -07:00
Mark Brown
f4b81dd83e Merge branches 'spi-drivers' and 'spi-mxs' into spi-next 2012-09-28 14:05:29 +01:00
Olof Johansson
db404e72bb Update arch-vt8500 and drivers to device tree and
remove existing non-dt code.
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Merge tag 'vt8500-for-next' of git://git.code.sf.net/p/linuxwmt/code into next/dt

From Tony Prisk:

Update arch-vt8500 and drivers to device tree and
remove existing non-dt code.

* tag 'vt8500-for-next' of git://git.code.sf.net/p/linuxwmt/code:
  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

Resolved add/change conflict in drivers/clk/Makefile.

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-23 21:51:39 -07:00
Tony Prisk
85814d69e6 arm: vt8500: clk: Add Common Clock Framework support
This patch adds common clock framework support for arch-vt8500.
Support for PLL and device clocks on VT8500, WM8505 and WM8650
are included.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Acked-by: Mike Turquette <mturquette@linaro.org>
2012-09-21 19:23:57 +12:00
Simon Arlott
75fabc3f64 ARM: bcm2835: add stub clock driver
This patch adds a minimal stub clock driver for the BCM2835. Its sole
purpose is to allow the PL011 AMBA clk_get() API calls to provide
something that looks enough like a clock that the driver probes and
operates correctly.

This patch was extracted from git://github.com/lp0/linux.git branch
rpi-split as of 2012/09/08, and modified as follows:

* Reworked to call clk_register_fixed_rate(), and clk_register_clkdev()
  rather than using static data to represent the clocks.
* Moved implementation to drivers/clk/.
* Modified .dev_id for UART clocks to match UART DT node names.
* s/bcm2708/bcm2835/.
* Modified device tree vendor prefix.

Signed-off-by: Chris Boot <bootc@bootc.net>
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Signed-off-by: Dom Cobley <dc4@broadcom.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
2012-09-19 19:08:53 -06:00
Mark Brown
20332ff376 ARM: 7537/1: clk: Fix release in devm_clk_put()
Surprisingly devres_destroy() doesn't call the destructor for the
resource it is destroying, use the newly added devres_release() instead
to fix this.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-09-19 21:51:27 +01:00
Lars-Peter Clausen
8ef997b67f ARM: 7534/1: clk: Make the managed clk functions generically available
The managed clk functions are currently only available when the generic clk
lookup framework is build. But the managed clk functions are merely wrappers
around clk_get and clk_put and do not depend on any specifics of the generic
lookup functions and there are still quite a few custom implementations of the
clk API. So make the managed functions available whenever the clk API is
implemented.

The patch also removes the custom implementation of devm_clk_get for the
coldfire platform.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-09-15 21:55:27 +01:00
Olof Johansson
83ae0ffa50 mxs-clk-dt-lookup
It replaces clk_register_clkdev in mxs clock driver with DT lookup.
 The series depends on pull request mxs-dt-3.7 and Mike's clk branch
 below.
 
 git://git.linaro.org/people/mturquette/linux.git clk-3.7
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Merge tag 'mxs-clk-dt-lookup' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/dt

It replaces clk_register_clkdev in mxs clock driver with DT lookup.

* tag 'mxs-clk-dt-lookup' of git://git.linaro.org/people/shawnguo/linux-2.6:
  clk: mxs: replace imx23 clk_register_clkdev with clock DT lookup
  clk: mxs: replace imx28 clk_register_clkdev with clock DT lookup
2012-09-12 23:04:12 -07:00
Shawn Guo
53f9443da6 clk: mxs: replace imx23 clk_register_clkdev with clock DT lookup
It really becomes a maintenance issue that every time a device needs
to look up (clk_get) a clock we have to patch kernel clock file to call
clk_register_clkdev for that clock.

Since clock DT support which is meant to resolve clock lookup in device
tree is in place, the patch moves imx23 client devices' clock lookup
over to device tree, so that any new lookup to be added at later time
can just get done in DT instead of kernel.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-09-11 14:45:46 +08:00
Shawn Guo
b598b9f311 clk: mxs: replace imx28 clk_register_clkdev with clock DT lookup
It really becomes a maintenance issue that every time a device needs
to look up (clk_get) a clock we have to patch kernel clock file to call
clk_register_clkdev for that clock.

Since clock DT support which is meant to resolve clock lookup in device
tree is in place, the patch moves imx28 client devices' clock lookup
over to device tree, so that any new lookup to be added at later time
can just get done in DT instead of kernel.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-09-11 14:45:46 +08:00
Shawn Guo
494bfec999 clk: add of_clk_src_onecell_get() support
For those SoCs that have hundreds of clock outputs, their clock
DT bindings could reasonably define #clock-cells as 1 and require
the client device specify the index of the clock it consumes in the
cell of its "clocks" phandle.

Add a generic of_clk_src_onecell_get() function for this purpose.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-07 18:30:19 -07:00
Ulf Hansson
09b9b2b204 clk: ux500: Define smp_twd clock for u8500
The smp_twd clock is based upon a prcmu_rate clock type
for the PRCMU_ARMSS clock.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-06 18:00:42 -07:00
Ulf Hansson
70b1fce2ec clk: ux500: Support for prmcu_rate clock
The prmcu_rate clock is not gateable and has a rate which
only can be fetched.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-06 17:57:08 -07:00
Ulf Hansson
a093bde2b4 clk: Provide option for clk_get_rate to issue hw for new rate
By using CLK_GET_RATE_NOCACHE flag, we tell the clk_get_rate API to
issue the hw for an updated clock rate. This can be used for a clock
which rate may be updated without a client necessary modifying it.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-06 17:56:22 -07:00
Jonghwa Lee
73118e6188 clock: max77686: Add driver for Maxim 77686 32Khz crystal oscillator.
This patch supports max77686 mfd's clock driver using common clock frame work.
max77686 has 3 clock ouputs which all are generated from crystal oscillator and
SOC can enable/disable them via I2C bus. All clocks are fixed-rate clock sources
so that it doesn't supply interface for changing clock rate.
Driver uses regmap API to communicate with internal register.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-06 16:55:38 -07:00
Ulf Hansson
ebc96db763 ARM: ux500: Switch to use common clock framework
Remove machine specific clock implementation and switch to use
new common clock framework.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-06 15:58:20 -07:00
Ulf Hansson
0e6dcde728 clk: ux500: Clock definitions for u8500
First version of clock definitions of PRCMU and PRCC clocks
for the u8500 platform.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-06 15:58:12 -07:00
Ulf Hansson
bce5afd8d9 clk: ux500: First version of clock definitions for ux500
In this first version of the clock definitions, the structure for
ux500 are set. Support for u8500, u9540 and u8540 are prepared.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-06 15:58:04 -07:00
Ulf Hansson
3b01f87be2 clk: ux500: Adapt PRCMU and PRCC clocks for common clk
First version of common clock implementation of PRCMU clocks
and PRCC clocks for ux500 platforms.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-06 15:57:47 -07:00
Linus Walleij
672575e1de clk: versatile: make config option boolean
There is no choice to have the RealView clocks as module for sure,
so turn this config option into a boolean.

Reported-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-09-04 15:28:42 -07:00
Shawn Guo
eeca6e6040 ARM: mxs: retrieve timer irq from device tree
Rather than using the static timer irq definition, we should retrieve
timer irq from device tree for better.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2012-09-03 09:31:50 +08:00
Kelvin Cheung
5175cb5894 clk: add Loongson1B clock support
This adds clock support to Loongson1B SoC using the common clock
infrastructure.

Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-08-31 11:05:18 -07:00
Chao Xie
4c5bca3419 clk: mmp: add clock definition for mmp2
Initialize the clocks for mmp2

Signed-off-by: Chao Xie <xiechao.mail@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-08-28 14:15:42 -07:00
Chao Xie
84a62e6ed7 clk: mmp: add clock definition for pxa910
Initialize the clocks for pxa910

Signed-off-by: Chao Xie <xiechao.mail@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-08-28 14:15:28 -07:00
Chao Xie
e1b53b3d0f clk: mmp: add clock definition for pxa168
Initialize the clocks for pxa168

Signed-off-by: Chao Xie <xiechao.mail@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-08-28 14:15:03 -07:00
Chao Xie
6b63f02318 clk: mmp: add mmp specific clocks
add mmp specific clocks including apbc cloks, apmu clocks,
and pll2, fraction clocks

Signed-off-by: Chao Xie <xiechao.mail@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-08-28 14:14:14 -07:00
Linus Walleij
f9a6aa4303 clk: convert ARM RealView to common clk
This converts the ARM RealView machine over to using the common
clock. The approach is similar to the one used for the Integrator,
and we're reusing the ICST wrapper code.

We have to put the clock intialization in the timer init function
for the clocks to be available when initializing the timer,
keeping them in early_init() is too early for the common clk.

Since we now have to go down and compile drivers/clk/versatile
a CONFIG_COMMON_CLK_VERSATILE symbol has been added so the proper
code gets compiled into the kernel for either machine. A leftover
CLK_VERSATILE in the Integrator Kconfig was fixed up to use
the new symbol as well.

Tested on ARM RealView PB1176.

Cc: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-08-24 17:42:10 -07:00
Barry Song
bc0e489eb0 clk: prima2: move from arch/arm/mach to drivers/clk
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-08-24 12:10:04 -07:00
Marek Vasut
1308239858 mmc: spi: Pull out the SSP clock configuration function
Pull out the MMC clock configuration function and make it
into SSP clock configuration function, so it can be used by
the SPI driver too.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-17 22:53:00 +01:00