These changes are specific to some driver that may be used by multiple
boards or socs. The most significant change in here is the move of the
samsung iommu code from a platform specific in-kernel interface to the
generic iommu subsystem.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=hgkg
-----END PGP SIGNATURE-----
Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc driver specific updates from Olof Johansson:
"These changes are specific to some driver that may be used by multiple
boards or socs. The most significant change in here is the move of
the samsung iommu code from a platform specific in-kernel interface to
the generic iommu subsystem."
Fix up trivial conflicts in arch/arm/mach-exynos/Kconfig
* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
mmc: dt: Consolidate DT bindings
iommu/exynos: Add iommu driver for EXYNOS Platforms
ARM: davinci: optimize the DMA ISR
ARM: davinci: implement DEBUG_LL port choice
ARM: tegra: Add SMMU enabler in AHB
ARM: tegra: Add Tegra AHB driver
Input: pxa27x_keypad add choice to set direct_key_mask
Input: pxa27x_keypad direct key may be low active
Input: pxa27x_keypad bug fix for direct_key_mask
Input: pxa27x_keypad keep clock on as wakeup source
ARM: dt: tegra: pinmux changes for USB ULPI
ARM: tegra: add USB ULPI PHY reset GPIO to device tree
ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
ARM: tegra: change pll_p_out4's rate to 24MHz
ARM: tegra: fix pclk rate
ARM: tegra: reparent sclk to pll_c_out1
ARM: tegra: Add pllc clock init table
ARM: dt: tegra cardhu: basic audio support
ARM: dt: tegra30.dtsi: Add audio-related nodes
ARM: tegra: add AUXDATA required for audio
...
This is the first big chunk for 3.5 merges of sound stuff.
There are a few big changes in different areas. First off, the
streaming logic of USB-audio endpoints has been largely rewritten
for the better support of "implicit feedback". If anything about USB
got broken, this change has to be checked.
For HD-audio, the resume procedure was changed; instead of delaying
the resume of the hardware until the first use, now waking up immediately
at resume. This is for buggy BIOS.
For ASoC, dynamic PCM support and the improved support for digital links
between off-SoC devices are major framework changes.
Some highlights are below:
* HD-audio
- Avoid the accesses of invalid pin-control bits that may stall the codec
- V-ref setup cleanups
- Fix the races in power-saving code
- Fix the races in codec cache hashes and connection lists
- Split some common codes for BIOS auto-parser to hda_auto_parser.c
- Changed the PM resume code to wake up immediately for buggy BIOS
- Creative SoundCore3D support
- Add Conexant CX20751/2/3/4 codec support
* ASoC
- Dynamic PCM support, allowing support for SoCs with internal routing
through components with tight sequencing and formatting constraints
within their internal paths or where there are multiple components
connected with CPU managed DMA controllers inside the SoC.
- Greatly improved support for direct digital links between off-SoC
devices, providing a much simpler way of connecting things like digital
basebands to CODECs.
- Much more fine grained and robust locking, cleaning up some of the
confusion that crept in with multi-component.
- CPU support for nVidia Tegra 30 I2S and audio hub controllers and
ST-Ericsson MSP I2S controolers
- New CODEC drivers for Cirrus CS42L52, LAPIS Semiconductor ML26124, Texas
Instruments LM49453.
- Some regmap changes needed by the Tegra I2S driver.
- mc13783 audio support.
* Misc
- Rewrite with module_pci_driver()
- Xonar DGX support for snd-oxygen
- Improvement of packet handling in snd-firewire driver
- New USB-endpoint streaming logic
- Enhanced M-audio FTU quirks and relevant cleanups
- Increment the support of OSS devices to 256
- snd-aloop accuracy improvement
There are a few more pending changes for 3.5, but they will be
sent slightly later as partly depending on the changes of DRM.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.18 (GNU/Linux)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=+JSm
-----END PGP SIGNATURE-----
Merge tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"This is the first big chunk for 3.5 merges of sound stuff.
There are a few big changes in different areas. First off, the
streaming logic of USB-audio endpoints has been largely rewritten for
the better support of "implicit feedback". If anything about USB got
broken, this change has to be checked.
For HD-audio, the resume procedure was changed; instead of delaying
the resume of the hardware until the first use, now waking up
immediately at resume. This is for buggy BIOS.
For ASoC, dynamic PCM support and the improved support for digital
links between off-SoC devices are major framework changes.
Some highlights are below:
* HD-audio
- Avoid accesses of invalid pin-control bits that may stall the codec
- V-ref setup cleanups
- Fix the races in power-saving code
- Fix the races in codec cache hashes and connection lists
- Split some common codes for BIOS auto-parser to hda_auto_parser.c
- Changed the PM resume code to wake up immediately for buggy BIOS
- Creative SoundCore3D support
- Add Conexant CX20751/2/3/4 codec support
* ASoC
- Dynamic PCM support, allowing support for SoCs with internal
routing through components with tight sequencing and formatting
constraints within their internal paths or where there are multiple
components connected with CPU managed DMA controllers inside the
SoC.
- Greatly improved support for direct digital links between off-SoC
devices, providing a much simpler way of connecting things like
digital basebands to CODECs.
- Much more fine grained and robust locking, cleaning up some of the
confusion that crept in with multi-component.
- CPU support for nVidia Tegra 30 I2S and audio hub controllers and
ST-Ericsson MSP I2S controolers
- New CODEC drivers for Cirrus CS42L52, LAPIS Semiconductor ML26124,
Texas Instruments LM49453.
- Some regmap changes needed by the Tegra I2S driver.
- mc13783 audio support.
* Misc
- Rewrite with module_pci_driver()
- Xonar DGX support for snd-oxygen
- Improvement of packet handling in snd-firewire driver
- New USB-endpoint streaming logic
- Enhanced M-audio FTU quirks and relevant cleanups
- Increment the support of OSS devices to 256
- snd-aloop accuracy improvement
There are a few more pending changes for 3.5, but they will be sent
slightly later as partly depending on the changes of DRM."
Fix up conflicts in regmap (due to duplicate patches, with some further
updates then having already come in from the regmap tree). Also some
fairly trivial context conflicts in the imx and mcx soc drivers.
* tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (280 commits)
ALSA: snd-usb: fix stream info output in /proc
ALSA: pcm - Add proper state checks to snd_pcm_drain()
ALSA: sh: Fix up namespace collision in sh_dac_audio.
ALSA: hda/realtek - Fix unused variable compile warning
ASoC: sh: fsi: enable chip specific data transfer mode
ASoC: sh: fsi: call fsi_hw_startup/shutdown from fsi_dai_trigger()
ASoC: sh: fsi: use same format for IN/OUT
ASoC: sh: fsi: add fsi_version() and removed meaningless version check
ASoC: sh: fsi: use register field macro name on IN/OUT_DMAC
ASoC: tegra: Add machine driver for WM8753 codec
ALSA: hda - Fix possible races of accesses to connection list array
ASoC: OMAP: HDMI: Introduce codec
ARM: mx31_3ds: Add sound support
ASoC: imx-mc13783 cleanup
mx31moboard: Add sound support
ASoC: mc13783 codec cleanups
ASoC: add imx-mc13783 sound support
ASoC: Add mc13783 codec
mfd: mc13xxx: add codec platform data
ASoC: don't flip master of DT-instantiated DAI links
...
Some SKUs limit the maximum CPU frequency to 750MHz; see
tegra2_pllx_clk_init(). The pll_x frequency table needs an entry for this
frequency, or there will be continual log spam from the cpufreq driver
attempting to set this rate, yet there being no table entry for it.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
pll_c will be used as a clock source. Fill in tegra_pll_c_freq_table[]
so that it's possible to explicitly initialize the PLL.
NVIDIA's downstream nv-3.1 kernel and the ChromeOS kernel have different
pll_c tables. nv-3.1 contains entries for 522MHz and 598MHz output,
whereas the ChromeOS kernel contains entries for 600MHz output. I chose
to upstream the ChromeOS values for now, since the 600MHz rate appears
to match the default rate of this PLL when the HW boots, and it's not
clear to me why 522 or 598MHz are more useful.
Signed-off-by: Allen Martin <amartin@nvidia.com>
Signed-off-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
[swarren: wrote commit description]
Rename Tegra20-specific Kconfig variables, module filenames, all internal
symbol names, clocks, and platform devices, to reflect the fact the DAS
and I2S drivers are for a specific HW version.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=pQ3X
-----END PGP SIGNATURE-----
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
When this inconsistency occurs, the system will typically operate without
issue, it's just that EMC scaling won't optimally. Convert the BUG_ON to
a WARN_ONCE in order to allow the kernel to boot, but still complain.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Add function to get chip revision, and print it out at boot time.
Restructure the fuse access to just use cached variables instead
of always reading the fuses, and export those variables directly
instead of using accessor functions.
Add a SKU ID table of currently known values.
Based on code originally by Colin Cross <ccross@android.com>.
Changes since v1:
* Add A01 minor rev support
* Don't decode for A03p on anything but T2x
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
don't export clk_measure_input_freq as its functionality is also available
using clk_get_rate().
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>
Rework the tegra20 clock code to support multiple tegra variants :
* remove tegra2_periph_reset_assert/tegra2_periph_reset_deassert. This
functionality should be in clock.c.
* remove tegra_sdmmc_tap_delay and export tegra2_sdmmc_tap_delay
directly. This feature is handled inside the sdmmc block from tegra30
onwards. So there is no need for support in the clock code beyond
tegra20. There are no in tree users of this function.
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>
Not used externally, and certainly don't need to be exported.
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Fixes a lot of:
arch/arm/mach-tegra/tegra2_clocks.c:921:34: warning: Using plain integer as NULL pointer
arch/arm/mach-tegra/tegra2_clocks.c:1462:4: warning: Using plain integer as NULL pointer
arch/arm/mach-tegra/tegra2_clocks.c:1864:4: warning: Using plain integer as NULL pointer
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Fixes a lot of:
arch/arm/mach-tegra/tegra2_clocks.c:180:2: warning: cast removes address space of expression
arch/arm/mach-tegra/tegra2_clocks.c:180:2: warning: incorrect type in argument 1 (different base types)
arch/arm/mach-tegra/tegra2_clocks.c:180:2: expected void const volatile [noderef] <asn:2>*<noident>
arch/arm/mach-tegra/tegra2_clocks.c:180:2: got unsigned int
arch/arm/mach-tegra/tegra2_clocks.c:180:2: warning: cast removes address space of expression
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Although disp1 and disp2 have 7.1 divisors, their corresponding
registers in the clk_rst block are not the interface to program the
divisors. Setting the generic DIV_U71 flag may cause the code to
attempt to program the clock at a different divisor, which will confuse
any code attempting to use that clock since it isn't actually being
divided.
Signed-off-by: Robert Morell <rmorell@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
Checking 'rate < 0' doesn't work because 'rate' is unsigned.
Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Colin Cross <ccross@android.com>
The ASoC machine driver was written assuming my previous patch to add
complete support for these clocks, which named them cdev1/2. Rename
the clocks to match that, to avoid churn in the ASoC driver.
This rename also makes the clocks more consistent with other Tegra
clocks irrespective of any of that.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
The driver is tegra-i2s not just i2s. Rename the clocks to match, so that
clk_get_sys can look up by driver name.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Colin Cross <ccross@android.com>
Peripheral clocks that have no clock enable bit in the
enable registers have their clk_num set to 0. Bit 0
in the clock enable registers is the CPU clock.
Prevent disables on these peripheral clocks from
accidentally disabling the CPU clock.
Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
Call the clock's round_rate op, if it exists, before calling
the set_rate op. This will help later when dvfs is added,
dvfs needs to know what the final rate will be before the
frequency changes.
Also requires fixes to the round rate functions to ensure
calling round rate and then set rate will not cause the
frequency to be rounded down twice. When picking clock
divider values, the clock framework picks the closest
frequency that is lower than the requested frequency. If
the new frequency calculated from the divider value is
rounded down, and then passed to set_rate, it will get
rounded down again, possibly resulting in a frequency two
steps lower than the original requested frequency.
Fix the problem by rounding up when calculating the frequency
coming out of a clock divider, so if that frequency is
requested again, the same divider value will be picked.
Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
Some peripheral clocks share enable bits. Refcount the enables so
that calling clk_disable on one clock will not turn off another
clock.
Signed-off-by: Colin Cross <ccross@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
Correct max rates for pclk and sclk (Originally fixed by
Dima Zavin <dima@android.com>)
Correct max rate for plla (Originally fixed by
Stephen Warren <swarren@nvidia.com>)
Remove unnecessary no-op set_rate on audio clocks
Add clock lookup entries for grhost, bsea, and vde clocks
Update clock clookup entries for vcp, bsea, and vde clocks
Add shared clock entries for sclk and emc
Add a virtual cop clock to provide a reset op (Originally fixed by
Dima Zavin <dima@android.com>)
Pass set_rate on super clocks through to parent
Fix pllx frequency table entry for 608 MHz
Remove incorrect plla frequency table entries
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
The PLLP registers are now being restored by the low-level resume code,
and the CPU may be running off PLLP, so don't touch them during clock
resume.
Save plld, plls, pllu, and audio clock during suspend (originally
fixed by Mayuresh Kulkarni <mkulkarni@nvidia.com>)
The lock time for plld is 1000 us, so increase the delay after
setting the PLLs.
Add a BUG_ON to ensure the size of the suspend context area is
correct.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
The SDMMC controllers have extra bits in the clock source
register that adjust the delay between the clock and data
to compenstate for delays on the PCB. The values need to
be set from the clock code so the clock can be locked
during the read-modify-write on the clock source register.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Add clock ops on the emc peripheral clock that call into the
emc driver to update the memory controller registers for the
new frequency. Tegra has an interlock between the clock
controller and the memory controller that prevents the new
register values from taking effect until the clock frequency
update occurs.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Remove unnecessary uses of #ifdef CONFIG_DEBUG_FS
Convert bool assignments from 1 to true
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Some clocks may have multiple downstream users that need to request a
higher clock rate. Shared bus clocks provide a unique shared_bus_user
clock to each user. The frequency of the bus is set to the highest
enabled shared_bus_user clock, with a minimum value set by the
shared bus. Drivers can use clk_enable and clk_disable to enable
or disable their requirement, and clk_set_rate to set the minimum rate.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
During cpu frequency changes, take an extra reference to pllx so
that it doesn't turn off and on while the cpu is temporarily on
pllp. If the cpu is moved to pllp permanently, pllx will be
turned off.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Give each clock its own lock, and remove all lock traversals from
parent to child clocks to prevent AB-BA deadlocks.
This brings the locking in line with the common struct clk
patches and should make conversion simple.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Creates a union of a struct for each type of clock to reduce memory
usage and clarify which members are used by all clocks and which are
used by a single type.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Make the static clocks look more like the array of clocks
so they can all be initalized with the same helper function.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
The existing version did not extend well to core dvfs, drop it
for now until the new clk api with clk_prepare and clk_unprepare
is ready and non-atomic clocks are possible.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
The PLL lock bits are not reliable, use per-PLL timeouts instead.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
When updating the CPU PLL frequency, keeping the PLL enabled avoids
ramping the PLL all the way down and back up again. Remove the BUG_ON
in tegra2_pll_clk_set_rate to allow the rate to change while the PLL
is enabled.
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Add a new 'reset' clk op. This can be provided for any clock,
not just peripherals.
Signed-off-by: Dima Zavin <dima@android.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
Save and restore pll and osc state during suspend
Add digital audio clocks
Update clk dev associations
Correct max clock frequencies
Add pll_p as additional cpu clock state
Add values to plld table
Fix register offset for sdmmc4 clock
Add blink timer to tegra2_clocks
Signed-off-by: Colin Cross <ccross@android.com>
factorise some generic infrastructure to assist looking up struct clks
for the ARM & SH architecture.
as the code is identical at 99%
put the arch specific code for allocation as example in asm/clkdev.h
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
- Add drivers to clock lookup table
- Add new pll_m entries
- Support I2C U16 divider
- Fix rate reporting on 32.768kHz clock
- Call propagate rate only if set_rate succeeds
- Add support for audio_sync clock
- Add 24MHz to PLLA frequency list
- Correct i2s1/2/spdifout mux
- Add suspend support
- Fix enable/disable parent clocks in set_parent
- Add max_rate parameter to all clocks
- DVFS support
- Add virtual cpu clock with dvfs
- Support clk_round_rate
- Fix requesting very high periph frequencies
- Add quirks for PLLU:
PLLU is slightly different from the rest of the PLLs. The
lock enable bit is at bit 22 instead of 18 in the MISC
register, and the post divider field is a single bit with
reversed values from other PLLs.
- Simplify recalculating clock rates
- Fix UART divider flags
- Remove unused clock ops
Signed-off-by: Colin Cross <ccross@android.com>
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>
Linus Torvalds