* Updates to the ux500 cpufreq code
* Moving the u300 DMA controller driver to drivers/dma
* Moving versatile express drivers out of arch/arm for sharing with arch/arm64
* Device tree bindings for the OMAP General Purpose Memory Controller
There is a simple conflict in drivers/cpufreq/dbx500-cpufreq.c, because
the mach/id.h header and the cpu_is_u8500_family() function in it are
now gone.
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver specific changes from Arnd Bergmann:
- Updates to the ux500 cpufreq code
- Moving the u300 DMA controller driver to drivers/dma
- Moving versatile express drivers out of arch/arm for sharing with arch/arm64
- Device tree bindings for the OMAP General Purpose Memory Controller
* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (27 commits)
ARM: OMAP2+: gpmc: Add device tree documentation for elm handle
ARM: OMAP2+: gpmc: add DT bindings for OneNAND
ARM: OMAP2+: gpmc-onenand: drop __init annotation
mtd: omap-onenand: pass device_node in platform data
ARM: OMAP2+: Prevent potential crash if GPMC probe fails
ARM: OMAP2+: gpmc: Remove unneeded of_node_put()
arm: Move sp810.h to include/linux/amba/
ARM: OMAP: gpmc: add DT bindings for GPMC timings and NAND
ARM: OMAP: gpmc: enable hwecc for AM33xx SoCs
ARM: OMAP: gpmc-nand: drop __init annotation
mtd: omap-nand: pass device_node in platform data
ARM: OMAP: gpmc: don't create devices from initcall on DT
dma: coh901318: cut down on platform data abstraction
dma: coh901318: merge header files
dma: coh901318: push definitions into driver
dma: coh901318: push header down into the DMA subsystem
dma: coh901318: skip hard-coded addresses
dma: coh901318: remove hardcoded target addresses
dma: coh901318: push platform data into driver
dma: coh901318: create a proper platform data file
...
- Rework of the ACPI namespace scanning code from Rafael J. Wysocki
with contributions from Bjorn Helgaas, Jiang Liu, Mika Westerberg,
Toshi Kani, and Yinghai Lu.
- ACPI power resources handling and ACPI device PM update from
Rafael J. Wysocki.
- ACPICA update to version 20130117 from Bob Moore and Lv Zheng
with contributions from Aaron Lu, Chao Guan, Jesper Juhl, and
Tim Gardner.
- Support for Intel Lynxpoint LPSS from Mika Westerberg.
- cpuidle update from Len Brown including Intel Haswell support, C1
state for intel_idle, removal of global pm_idle.
- cpuidle fixes and cleanups from Daniel Lezcano.
- cpufreq fixes and cleanups from Viresh Kumar and Fabio Baltieri
with contributions from Stratos Karafotis and Rickard Andersson.
- Intel P-states driver for Sandy Bridge processors from
Dirk Brandewie.
- cpufreq driver for Marvell Kirkwood SoCs from Andrew Lunn.
- cpufreq fixes related to ordering issues between acpi-cpufreq and
powernow-k8 from Borislav Petkov and Matthew Garrett.
- cpufreq support for Calxeda Highbank processors from Mark Langsdorf
and Rob Herring.
- cpufreq driver for the Freescale i.MX6Q SoC and cpufreq-cpu0 update
from Shawn Guo.
- cpufreq Exynos fixes and cleanups from Jonghwan Choi, Sachin Kamat,
and Inderpal Singh.
- Support for "lightweight suspend" from Zhang Rui.
- Removal of the deprecated power trace API from Paul Gortmaker.
- Assorted updates from Andreas Fleig, Colin Ian King,
Davidlohr Bueso, Joseph Salisbury, Kees Cook, Li Fei,
Nishanth Menon, ShuoX Liu, Srinivas Pandruvada, Tejun Heo,
Thomas Renninger, and Yasuaki Ishimatsu.
/
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Merge tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
- Rework of the ACPI namespace scanning code from Rafael J. Wysocki
with contributions from Bjorn Helgaas, Jiang Liu, Mika Westerberg,
Toshi Kani, and Yinghai Lu.
- ACPI power resources handling and ACPI device PM update from Rafael
J Wysocki.
- ACPICA update to version 20130117 from Bob Moore and Lv Zheng with
contributions from Aaron Lu, Chao Guan, Jesper Juhl, and Tim Gardner.
- Support for Intel Lynxpoint LPSS from Mika Westerberg.
- cpuidle update from Len Brown including Intel Haswell support, C1
state for intel_idle, removal of global pm_idle.
- cpuidle fixes and cleanups from Daniel Lezcano.
- cpufreq fixes and cleanups from Viresh Kumar and Fabio Baltieri with
contributions from Stratos Karafotis and Rickard Andersson.
- Intel P-states driver for Sandy Bridge processors from Dirk
Brandewie.
- cpufreq driver for Marvell Kirkwood SoCs from Andrew Lunn.
- cpufreq fixes related to ordering issues between acpi-cpufreq and
powernow-k8 from Borislav Petkov and Matthew Garrett.
- cpufreq support for Calxeda Highbank processors from Mark Langsdorf
and Rob Herring.
- cpufreq driver for the Freescale i.MX6Q SoC and cpufreq-cpu0 update
from Shawn Guo.
- cpufreq Exynos fixes and cleanups from Jonghwan Choi, Sachin Kamat,
and Inderpal Singh.
- Support for "lightweight suspend" from Zhang Rui.
- Removal of the deprecated power trace API from Paul Gortmaker.
- Assorted updates from Andreas Fleig, Colin Ian King, Davidlohr Bueso,
Joseph Salisbury, Kees Cook, Li Fei, Nishanth Menon, ShuoX Liu,
Srinivas Pandruvada, Tejun Heo, Thomas Renninger, and Yasuaki
Ishimatsu.
* tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (267 commits)
PM idle: remove global declaration of pm_idle
unicore32 idle: delete stray pm_idle comment
openrisc idle: delete pm_idle
mn10300 idle: delete pm_idle
microblaze idle: delete pm_idle
m32r idle: delete pm_idle, and other dead idle code
ia64 idle: delete pm_idle
cris idle: delete idle and pm_idle
ARM64 idle: delete pm_idle
ARM idle: delete pm_idle
blackfin idle: delete pm_idle
sparc idle: rename pm_idle to sparc_idle
sh idle: rename global pm_idle to static sh_idle
x86 idle: rename global pm_idle to static x86_idle
APM idle: register apm_cpu_idle via cpuidle
cpufreq / intel_pstate: Add kernel command line option disable intel_pstate.
cpufreq / intel_pstate: Change to disallow module build
tools/power turbostat: display SMI count by default
intel_idle: export both C1 and C1E
ACPI / hotplug: Fix concurrency issues and memory leaks
...
None are dire enough to be Cc'd to stable which may be interpreted to
mean that users of the framework are reaching stability. Lots of new
adoption of this framework is via DeviceTree data and that comes through
the respective architecture and platform trees instead of through the
clk framework tree. Two new features are improved debugfs output and an
improvement to how DT clocks are initialized by reusing a common method.
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Merge tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux
Pull clock framework update from Michael Turquette:
"The common clock framework changes for 3.9 are almost entirely fixes.
None are dire enough to be Cc'd to stable which may be interpreted to
mean that users of the framework are reaching stability. Lots of new
adoption of this framework is via DeviceTree data and that comes
through the respective architecture and platform trees instead of
through the clk framework tree.
Two new features are improved debugfs output and an improvement to how
DT clocks are initialized by reusing a common method."
* tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux: (25 commits)
clk: sunxi: remove stale Makefile entry
clk: vexpress: Use common of_clk_init() function
clk: zynq: Use common of_clk_init() function
clk: vt8500: Use common of_clk_init() function
clk: highbank: Use common of_clk_init() function
clk: sunxi: Use common of_clk_init() function
clk: add common of_clk_init() function
clk: Deduplicate exit code in clk_set_rate
clk: beautify Makefile
clk-divider: fix macros
clk: prima2: enable dt-binding clkdev mapping
clk: mxs: Index is always positive
clk: max77686: Avoid double free at remove time
clk: remove exported function from __init section
clk: vt8500: Add support for WM8750/WM8850 PLL clocks
clk: vt8500: Fix division-by-0 when requested rate=0
clk: vt8500: Fix device clock divisor calculations
clk: vt8500: Fix error in PLL calculations on non-exact match.
clk: max77686: Remove unnecessary NULL checking for container_of()
clk: JSON debugfs clock tree summary
...
A number of small fixes are included to the new Tegra common clock
driver. These are: Missing locking, definition of device tree clock IDs
not matching the binding, a static cleanup, missing initialization of
some UART clocks.
This branch is based on Tegra's previous pull request tegra-for-3.9-dt.
This dependency is caused by the one patch that edits the device tree.
If this causes a problem, I can drop the final two patches in this pull
request for now, and rebase it onto previous tegra-for-3.9-soc-ccf
instead.
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Merge tag 'tegra-for-3.9-soc-ccf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/dt
ARM: tegra: common clock framework fixes
A number of small fixes are included to the new Tegra common clock
driver. These are: Missing locking, definition of device tree clock IDs
not matching the binding, a static cleanup, missing initialization of
some UART clocks.
This branch is based on Tegra's previous pull request tegra-for-3.9-dt.
This dependency is caused by the one patch that edits the device tree.
If this causes a problem, I can drop the final two patches in this pull
request for now, and rebase it onto previous tegra-for-3.9-soc-ccf
instead.
* tag 'tegra-for-3.9-soc-ccf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
clk: tegra: initialise parent of uart clocks
ARM: tegra: remove clock-frequency properties from serial nodes
clk: tegra: fix driver to match DT binding
clk: tegra: local arrays should be static
clk: tegra: Add missing spinlock for hclk and pclk
clk: tegra: Implement locking for super clock
clk: tegra: fix wrong clock index between se to sata_cold
(applied to next/dt branch rather than next/soc because of the
dependency)
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* pm-cpufreq: (55 commits)
cpufreq / intel_pstate: Fix 32 bit build
cpufreq: conservative: Fix typos in comments
cpufreq: ondemand: Fix typos in comments
cpufreq: exynos: simplify .init() for setting policy->cpus
cpufreq: kirkwood: Add a cpufreq driver for Marvell Kirkwood SoCs
cpufreq/x86: Add P-state driver for sandy bridge.
cpufreq_stats: do not remove sysfs files if frequency table is not present
cpufreq: Do not track governor name for scaling drivers with internal governors.
cpufreq: Only call cpufreq_out_of_sync() for driver that implement cpufreq_driver.target()
cpufreq: Retrieve current frequency from scaling drivers with internal governors
cpufreq: Fix locking issues
cpufreq: Create a macro for unlock_policy_rwsem{read,write}
cpufreq: Remove unused HOTPLUG_CPU code
cpufreq: governors: Fix WARN_ON() for multi-policy platforms
cpufreq: ondemand: Replace down_differential tuner with adj_up_threshold
cpufreq / stats: Get rid of CPUFREQ_STATDEVICE_ATTR
cpufreq: Don't check cpu_online(policy->cpu)
cpufreq: add imx6q-cpufreq driver
cpufreq: Don't remove sysfs link for policy->cpu
cpufreq: Remove unnecessary use of policy->shared_type
...
Patch 85a18198 "clk: sunxi: Use common of_clk_init() function"
removed the clk-sunxi.c file but left the Makefile entry, which
causes a build error in multi_v7_defconfig:
make[4]: *** No rule to make target `drivers/clk/clk-sunxi.o', needed by `drivers/clk/built-in.o'.
The obvious fix is to remove the extraneous line from the
Makefile.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Maxime Ripard <maxime.ripard@anandra.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Initialise the parent of UARTs to PLLP and disabling clock by
default.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
enum tegra*_clk is intended to match the IDs listed in the Tegra clock
bindings. There are a few mismatches, which this patch fixes:
1) pll_s and cop were left out of the Tegra20 enum.
2) spdif_in and spdif_out were swapped relative to the Tegra30 binding.
3) i2cslow was misnamed as i2c_slow, and a duplicate i2cslow clock added
to the Tegra30 enum.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
cclk_g_parents, cclk_lp_parents and sclk_parents are only accessed from within
clk-tegra30.c. Declare them static to avoid namespace polution.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
The hclk and pclk clocks are controlled by the same register. Hence a lock is
required to avoid corruption.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Although tegra_clk_register_super_mux() has a lock parameter, the lock is not
actually used by the code. Fixed with this patch.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
The index of se should be 127. And the previous clock index was 125. So
we need to set up the index for se to get the correct index between se
to sata_cold.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
* acpi-lpss:
ACPI / platform: create LPSS clocks if Lynxpoint devices are found during scan
clk: x86: add support for Lynxpoint LPSS clocks
x86: add support for Intel Low Power Subsystem
ACPI / platform: fix comment about the platform device name
ACPI: add support for CSRT table
- A couple of optimization on timer
- Some updates on mxs_defconfig
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Merge tag 'mxs-soc-3.9' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/soc
From Shawn Guo:
mxs soc changes for 3.9
- A couple of optimization on timer
- Some updates on mxs_defconfig
* tag 'mxs-soc-3.9' of git://git.linaro.org/people/shawnguo/linux-2.6:
ARM: mxs_defconfig: Select CONFIG_DEVTMPFS_MOUNT
ARM: mxs: decrease mxs_clockevent_device.min_delta_ns to 2 clock cycles
ARM: mxs: use apbx bus clock to drive the timers on timrotv2
ARM: mxs: Update mxs_defconfig
The Marvell Kirkwood SoCs have simple cpufreq support in hardware. The
CPU can either use the a high speed cpu clock, or the slower DDR
clock. Add a driver to swap between these two clock sources.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This pull request implements a new "LP2" cpuidle state for Tegra20,
which makes use of the couple cpuidle feature.
It is based on (most of) the previous pull request, with tag
tegra-for-3.9-soc-usb.
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Merge tag 'tegra-for-3.9-soc-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc
From Stephen Warren:
ARM: tegra: cpuidle enhancements
This pull request implements a new "LP2" cpuidle state for Tegra20,
which makes use of the couple cpuidle feature.
It is based on (most of) the previous pull request, with tag
tegra-for-3.9-soc-usb.
* tag 'tegra-for-3.9-soc-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
ARM: tegra20: cpuidle: apply coupled cpuidle for powered-down mode
ARM: tegra20: flowctrl: add support for cpu_suspend_enter/exit
clk: tegra20: Implementing CPU low-power function for tegra_cpu_car_ops
ARM: tegra20: cpuidle: add powered-down state for secondary CPU
ARM: tegra: add pending SGI checking API
Signed-off-by: Olof Johansson <olof@lixom.net>
Tegra already supports the common clock framework, but had issues:
1) The clock driver was located in arch/arm/mach-tegra/ rather than
drivers/clk/.
2) A single "Tegra clock" type was implemented, rather than separate
clock types for PLL, mux, divider, ... type in HW.
3) Clock lookups by device drivers were still driven by device name
and connection ID, rather than through device tree.
This pull request solves all three issues. This required some DT changes
to add clocks properties, and driver changes to request clocks more
"correctly". Finally, this rework allows all AUXDATA to be removed from
Tegra board files, and various duplicate clock lookup entries to be
removed from the driver.
This pull request is based on the previous pull request, with tag
tegra-for-3.9-cleanup.
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Merge tag 'tegra-for-3.9-soc-ccf' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc
From Stephen Warren:
ARM: tegra: Common Clock Framework rework
Tegra already supports the common clock framework, but had issues:
1) The clock driver was located in arch/arm/mach-tegra/ rather than
drivers/clk/.
2) A single "Tegra clock" type was implemented, rather than separate
clock types for PLL, mux, divider, ... type in HW.
3) Clock lookups by device drivers were still driven by device name
and connection ID, rather than through device tree.
This pull request solves all three issues. This required some DT changes
to add clocks properties, and driver changes to request clocks more
"correctly". Finally, this rework allows all AUXDATA to be removed from
Tegra board files, and various duplicate clock lookup entries to be
removed from the driver.
This pull request is based on the previous pull request, with tag
tegra-for-3.9-cleanup.
* tag 'tegra-for-3.9-soc-ccf' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (31 commits)
clk: tegra30: remove unused TEGRA_CLK_DUPLICATE()s
clk: tegra20: remove unused TEGRA_CLK_DUPLICATE()s
ARM: tegra30: remove auxdata
ARM: tegra20: remove auxdata
ASoC: tegra: remove auxdata
staging: nvec: remove use of clk_get_sys
ARM: tegra: paz00: add clock information to DT
ARM: tegra: add clock properties to Tegra30 DT
ARM: tegra: add clock properties to Tegra20 DT
spi: tegra: do not use clock name to get clock
ARM: tegra: remove legacy clock code
ARM: tegra: migrate to new clock code
clk: tegra: add clock support for Tegra30
clk: tegra: add clock support for Tegra20
clk: tegra: add Tegra specific clocks
ARM: tegra: define Tegra30 CAR binding
ARM: tegra: define Tegra20 CAR binding
ARM: tegra: move tegra_cpu_car.h to linux/clk/tegra.h
ARM: tegra: add function to read chipid
ARM: tegra: fix compile error when disable CPU_IDLE
...
Signed-off-by: Olof Johansson <olof@lixom.net>
Conflicts:
arch/arm/mach-tegra/board-dt-tegra20.c
arch/arm/mach-tegra/board-dt-tegra30.c
arch/arm/mach-tegra/common.c
arch/arm/mach-tegra/platsmp.c
drivers/clocksource/Makefile
timer resolution of ~32us is pretty low.
v2 has 32bits resolution, so we have quite some headroom, and
can use the 24MHz clock.
v1 has only 16bits, so we only increase v2.
So we just exchange the timrot clock in imx28.
On imx23 we have timrotv1 and everything stays the same.
Signed-off-by: Torben Hohn <torbenh@linutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The highbank clock will glitch with the current code if the
clock rate is reset without relocking the PLL. Program the PLL
correctly to prevent glitches.
Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Since it is now used by code under drivers/clk/ it makes sense for this
file to be in a more generic location. This is required for building
vexpress support on arm64.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Pawel Moll <pawel.moll@arm.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Implementing suspend, resume and rail_off_ready API for tegra_cpu_car_ops. These
functions were used for CPU powered-down state maintenance.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
With device tree support added for Tegra clocks look up is done from
device tree, remove unused TEGRA_CLK_DUPLICATE()s.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
With device tree support added for Tegra clocks look up is done from
device tree, remove unused TEGRA_CLK_DUPLICATE()s.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Migrate Tegra clock support to drivers/clk/tegra, this involves
moving:
1. definition of tegra_cpu_car_ops to clk.c
2. definition of reset functions to clk-peripheral.c
3. change parent of cpu clock.
4. Remove legacy clock initialization.
5. Initialize clocks using DT.
6. Remove all instance of mach/clk.h
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
[swarren: use to_clk_periph_gate().]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Add Tegra30 clock support based on common clock framework.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
[swarren: ensure all OF lookups return valid cookies i.e. an explicit
error pointer or valid pointer not NULL, adapt to renames in earlier
patches, fixed some checkpatch issues.]
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Add Tegra20 clock support based on common clock framework.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
[swarren: s/1GHz/100MHz/ in call to tegra_clk_plle() to fix PCIe,
implemented KBC clock, ensure all OF lookups return valid cookies i.e.
an explicit error pointer or valid pointer not NULL, adapt to renames
in earlier patches, fixed some checkpatch issues.]
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Add Tegra specific clocks, pll, pll_out, peripheral, frac_divider, super.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
[swarren: alloc sizeof(*foo) not sizeof(struct foo), add comments re:
storing pointers to stack variables, make a timeout loop more idiomatic,
use _clk_pll_disable() not clk_disable_pll() from _program_pll() to
avoid redundant lock operations, unified tegra_clk_periph() and
tegra_clk_periph_nodiv(), unified tegra_clk_pll{,e}, rename all clock
registration functions so they don't have the same name as the clock
structs, return -EINVAL from clk_plle_enable when matching table rate
not found, pass ops to _tegra_clk_register_pll rather than a bool.]
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Use common of_clk_init() function for clock initialization.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Tested-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Use common of_clk_init() function for clock initialization.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Use common of_clk_init() function for clock initialization.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Tested-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: added entry for wm8750-pll-clock]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Use common of_clk_init() function for clocks initialization.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Tested-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Use common of_clk_init() function to initialize clocks.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Acked-by: Maxime Ripard <maxime.ripard@anandra.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Modify of_clk_init function so that it will determine which
driver to initialize based on device tree instead of each driver
registering to it.
Based on a similar patch for drivers/irqchip by Thomas Petazzoni and
drivers/clocksource by Stephen Warren.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Tested-by: Tony Prisk <linux@prisktech.co.nz>
Tested-by: Pawel Moll <pawel.moll@arm.com>
Tested-by: Rob Herring <rob.herring@calxeda.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
Reviewed-by: Josh Cartwright <josh.cartwright@ni.com>
Acked-by: Maxime Ripard <maxime.ripard@anandra.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: merge conflict from missing CLKSRC_OF_TABLES()]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
- fix memory leak in mvebu/clk-cpu.c
- use devm_ to correct/simplify error paths in mvsdio
- add missing #interrupt-cells property in kirkwood
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Merge tag 'mvebu_fixes_for_v3.8-rc5' of git://git.infradead.org/users/jcooper/linux into fixes
From Jason Cooper:
mvebu fixes for v3.8-rc5
- fix memory leak in mvebu/clk-cpu.c
- use devm_ to correct/simplify error paths in mvsdio
- add missing #interrupt-cells property in kirkwood
* tag 'mvebu_fixes_for_v3.8-rc5' of git://git.infradead.org/users/jcooper/linux:
ARM: kirkwood: fix missing #interrupt-cells property
mmc: mvsdio: use devm_ API to simplify/correct error paths.
clk: mvebu/clk-cpu.c: fix memory leakage
Intel Lynxpoint Low Power Subsystem hosts peripherals like UART, I2C and
SPI controllers. For most of these there is a configuration register that
allows software to enable and disable the functional clock. Disabling the
clock while the peripheral is not used saves power.
In order to take advantage of this we add a new clock gate of type
lpss_gate that just re-uses the ordinary clk_gate but in addition is able
to enumerate the base address register of the device using ACPI.
We then create a clock tree that models the Lynxpoint LPSS clocks using
these gates and fixed clocks so that we can pass clock rate to the drivers
as well.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
the variable cpuclk and clk_name should be properly freed when error happens.
Signed-off-by: Cong Ding <dinggnu@gmail.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
On non-out case 'return ret;' is equivalent to 'return 0;' as the ret
variable is initialized at 0 and never changed.
Signed-off-by: Nestor Ovroy <novroy@riseup.net>
The list of common clock types was getting a bit unmanageable. This
patch puts only one file on each line and reorders the object files
alphabetically. Also a newline is added to separate the sections.
Reported-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The macro is_power_of_two() in clk-divider.c was defined as !(i & ~i)
which is always true. Instead use is_power_of_2() from log2.h.
Also add brackets around the macro arguments in div_mask to avoid any
future operator precedence problems.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: use log2.h per Joe Perches; update changelog]
this patche deletes hard code that registers clkdev by things like:
clk_register_clkdev(clk, NULL, "b0030000.nand");
clk_register_clkdev(clk, NULL, "b0040000.audio");
clk_register_clkdev(clk, NULL, "b0080000.usp");
prima2 clock controller becomes a clock provider and every dt node
just declares its clock sources by dt prop.
it also makes us easier to extend this driver to support both prima2
and marco as marco has different address mapping with prima2.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Fix the following warnings when building with W=1 option:
drivers/clk/mxs/clk-imx23.c: In function 'mx23_clocks_init':
drivers/clk/mxs/clk-imx23.c:149:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
drivers/clk/mxs/clk-imx23.c:165:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
...
drivers/clk/mxs/clk-imx28.c: In function 'mx28_clocks_init':
drivers/clk/mxs/clk-imx28.c:227:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
drivers/clk/mxs/clk-imx28.c:244:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The clk_lookup entry is dropped at remove time by a call to
clkdev_drop(). That function frees the entry, which is also freed by the
driver core as it has been allocated through devm_kzalloc(). This
results in a double free.
Use kzalloc() instead of devm_kzalloc() to fix this.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The symbol of_fixed_clk_setup is exported and annotated __init.
This looks like section mismatch.
Fix this by removing the __init annotation of of_fixed_clk_setup.
Signed-off-by: Denis Efremov <yefremov.denis@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This patch adds support for the new PLL module found in WM8750 and
WM8850 SoCs.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
A request to vt8500_dclk_(round_rate/set_rate) with rate=0 results
in a division-by-0 in the kernel.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
When calculating device clock divisor values in set_rate and
round_rate, we do a simple integer divide. If parent_rate / rate
has a fraction, this is dropped which results in the device clock
being set too high.
This patch corrects the problem by adding 1 to the calculated
divisor if the division would have had a decimal result.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
When a PLL frequency calculation is performed and a non-exact match
is found the wrong multiplier and divisors are returned.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
container_of() never returns NULL, thus remove the NULL checking for it.
Also rename get_max77686_clk() to to_max77686_clk() for better readability.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This will allow fixed-clocks to be registered in device tree, which in
turn will allow clock clients to look up their clocks in device tree.
The first driver to use this feature will be the bcm2835 SDHCI/MMC
driver. In the long run, it is likely these fixed clocks will be
replaced with an actual clock implementation which speaks to the
VideoCore processor, but this change should be transparent to clock
consumers.
Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Clock information is dumped in JSON format which is easy
for machines to parse.
Each clock is represented as an object which has same name as
clock and following properties
- enable_count
- prepare_count
- rate
Output is verified using online JSON editor.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
clk->rate = parent->rate / div * mult
The formula is OK. But it may overflow while we do operate with
unsigned long. So use do_div instead.
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: improved $SUBJECT]
This fixes the following error when building for arm-imx:
> ERROR: "__clk_get_name" [drivers/staging/imx-drm/ipu-v3/imx-ipu-v3.ko] undefined!
> make[1]: *** [__modpost] Error 1
> make: *** [modules] Error 2
There are valid usecases to get the name of a clock, be it for debugging
purposes or to register a children of a clock like done in this IPU driver.
Therefore exporting __clk_get_name() and make it available for others makes
sense.
Reported-by: Peter Robinson <pbrobinson@gmail.com>
CC: Sascha Hauer <s.hauer@pengutronix.de>
CC: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: removal of inline made redundant by 65800b2]
The helper functions that access the opaque struct clk should
not be marked inline since they are contained in clk.c, but expected
to be used by other compilation units. This causes compile errors
under gcc-4.7
In file included from arch/arm/mach-omap2/clockdomain.c:25:0:
arch/arm/mach-omap2/clockdomain.c: In function ‘clkdm_clk_disable’:
include/linux/clk-provider.h:338:12: error: inlining failed in call to always_inline ‘__clk_get_enable_count’: function body not available
arch/arm/mach-omap2/clockdomain.c:1001:28: error: called from here
make[1]: *** [arch/arm/mach-omap2/clockdomain.o] Error 1
make: *** [arch/arm/mach-omap2] Error 2
Signed-off-by: Russ Dill <Russ.Dill@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: removed fixes made redundant by commit 93532c8a]
[mturquette@linaro.org: improved $SUBJECT]
People are back from the holiday breaks, and it shows. Here are a bunch of
fixes for a number of platforms:
- A couple of small fixes for Nomadik
- A larger set of changes for kirkwood/mvebu
- uart driver selection, dt clocks, gpio-poweroff fixups,
a few __init annotation fixes and some error handling improvement
in their xor dma driver.
- i.MX had a couple of minor fixes (and a critical one for flexcan2
clock setup)
- MXS has a small board fix and a framebuffer bugfix
- A set of fixes for Samsung Exynos, fixing default bootargs and some
Exynos5440 clock issues
- A set of OMAP changes including PM fixes and a few sparse warning
fixups
All in all a bit more positive code delta than we'd ideally want to see
here, mostly from the OMAP PM changes, but nothing overly crazy.
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Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"People are back from the holiday breaks, and it shows. Here are a
bunch of fixes for a number of platforms:
- A couple of small fixes for Nomadik
- A larger set of changes for kirkwood/mvebu
- uart driver selection, dt clocks, gpio-poweroff fixups, a few
__init annotation fixes and some error handling improvement in
their xor dma driver.
- i.MX had a couple of minor fixes (and a critical one for flexcan2
clock setup)
- MXS has a small board fix and a framebuffer bugfix
- A set of fixes for Samsung Exynos, fixing default bootargs and some
Exynos5440 clock issues
- A set of OMAP changes including PM fixes and a few sparse warning
fixups
All in all a bit more positive code delta than we'd ideally want to
see here, mostly from the OMAP PM changes, but nothing overly crazy."
* tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (44 commits)
ARM: clps711x: Fix bad merge of clockevents setup
ARM: highbank: save and restore L2 cache and GIC on suspend
ARM: highbank: add a power request clear
ARM: highbank: fix secondary boot and hotplug
ARM: highbank: fix typos with hignbank in power request functions
ARM: dts: fix highbank cpu mpidr values
ARM: dts: add device_type prop to cpu nodes on Calxeda platforms
ARM: mx5: Fix MX53 flexcan2 clock
ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array
pinctrl: mvebu: make pdma clock on dove mandatory
ARM: Dove: Add pinctrl clock to DT
dma: mv_xor: fix error handling for clocks
dma: mv_xor: fix error handling of mv_xor_channel_add()
arm: mvebu: Add missing ; for cpu node.
arm: mvebu: Armada XP MV78230 has only three Ethernet interfaces
arm: mvebu: Armada XP MV78230 has two cores, not one
clk: mvebu: Remove inappropriate __init tagging
ARM: Kirkwood: Use fixed-regulator instead of board gpio call
ARM: Kirkwood: Fix missing sdio clock
ARM: Kirkwood: Switch TWSI1 of 88f6282 to DT clock providers
...
If the Orion WDT driver is built as a module, an opps occurs during
clk lookup when calling mvebu_clk_gating_get_src(). Remove the
inappropriate __init tag so the function is available for modules
after kernel init.
Signed-off-by: Joshua Coombs <josh.coombs@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
CONFIG_HOTPLUG is going away as an option. As a result, the __dev*
markings need to be removed.
This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.
Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.
Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Various cleanups especially in NAND tests
- Add support for NAND flash on BCMA bus
- DT support for sh_flctl and denali NAND drivers
- Kill obsolete/superceded drivers (fortunet, nomadik_nand)
- Fix JFFS2 locking bug in ENOMEM failure path
- New SPI flash chips, as usual
- Support writing in 'reliable mode' for DiskOnChip G4
- Debugfs support in nandsim
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Merge tag 'for-linus-20121219' of git://git.infradead.org/linux-mtd
Pull MTD updates from David Woodhouse:
- Various cleanups especially in NAND tests
- Add support for NAND flash on BCMA bus
- DT support for sh_flctl and denali NAND drivers
- Kill obsolete/superceded drivers (fortunet, nomadik_nand)
- Fix JFFS2 locking bug in ENOMEM failure path
- New SPI flash chips, as usual
- Support writing in 'reliable mode' for DiskOnChip G4
- Debugfs support in nandsim
* tag 'for-linus-20121219' of git://git.infradead.org/linux-mtd: (96 commits)
mtd: nand: typo in nand_id_has_period() comments
mtd: nand/gpio: use io{read,write}*_rep accessors
mtd: block2mtd: throttle writes by calling balance_dirty_pages_ratelimited.
mtd: nand: gpmi: reset BCH earlier, too, to avoid NAND startup problems
mtd: nand/docg4: fix and improve read of factory bbt
mtd: nand/docg4: reserve bb marker area in ecclayout
mtd: nand/docg4: add support for writing in reliable mode
mtd: mxc_nand: reorder part_probes to let cmdline override other sources
mtd: mxc_nand: fix unbalanced clk_disable() in error path
mtd: nandsim: Introduce debugfs infrastructure
mtd: physmap_of: error checking to prevent a NULL pointer dereference
mtg: docg3: potential divide by zero in doc_write_oob()
mtd: bcm47xxnflash: writing support
mtd: tests/read: initialize buffer for whole next page
mtd: at91: atmel_nand: return bit flips for the PMECC read_page()
mtd: fix recovery after failed write-buffer operation in cfi_cmdset_0002.c
mtd: nand: onfi need to be probed in 8 bits mode
mtd: nand: add NAND_BUSWIDTH_AUTO to autodetect bus width
mtd: nand: print flash size during detection
mted: nand_wait_ready timeout fix
...
This is a branch with updates for Marvell's mvebu/kirkwood platforms. They
came in late-ish, and were heavily interdependent such that it didn't
make sense to split them up across the cross-platform topic branches. So
here they are (for the second release in a row) in a branch on their own.
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Merge tag 'mvebu' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC updates for Marvell mvebu/kirkwood from Olof Johansson:
"This is a branch with updates for Marvell's mvebu/kirkwood platforms.
They came in late-ish, and were heavily interdependent such that it
didn't make sense to split them up across the cross-platform topic
branches. So here they are (for the second release in a row) in a
branch on their own."
* tag 'mvebu' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (88 commits)
arm: l2x0: add aurora related properties to OF binding
arm: mvebu: add Aurora L2 Cache Controller to the DT
arm: mvebu: add L2 cache support
dma: mv_xor: fix error handling path
dma: mv_xor: fix error checking of irq_of_parse_and_map()
dma: mv_xor: use request_irq() instead of devm_request_irq()
dma: mv_xor: clear the window override control registers
arm: mvebu: fix address decoding armada_cfg_base() function
ARM: mvebu: update defconfig with I2C and RTC support
ARM: mvebu: Add SATA support for OpenBlocks AX3-4
ARM: mvebu: Add support for the RTC in OpenBlocks AX3-4
ARM: mvebu: Add support for I2C on OpenBlocks AX3-4
ARM: mvebu: Add support for I2C controllers in Armada 370/XP
arm: mvebu: Add hardware I/O Coherency support
arm: plat-orion: Add coherency attribute when setup mbus target
arm: dma mapping: Export a dma ops function arm_dma_set_mask
arm: mvebu: Add SMP support for Armada XP
arm: mm: Add support for PJ4B cpu and init routines
arm: mvebu: Add IPI support via doorbells
arm: mvebu: Add initial support for power managmement service unit
...
This branch contains device-tree updates for the SPEAr platform.
They had dependencies on earlier branches from this merge window,
which is why they were broken out in a separate branch.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device-tree updates, take 2, from Olof Johansson:
"This branch contains device-tree updates for the SPEAr platform. They
had dependencies on earlier branches from this merge window, which is
why they were broken out in a separate branch."
* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: SPEAr3xx: Shirq: Move shirq controller out of plat/
ARM: SPEAr320: DT: Add SPEAr 320 HMI board support
ARM: SPEAr3xx: DT: add shirq node for interrupt multiplexor
ARM: SPEAr3xx: shirq: simplify and move the shared irq multiplexor to DT
ARM: SPEAr1310: Fix AUXDATA for compact flash controller
ARM: SPEAr13xx: Remove fields not required for ssp controller
ARM: SPEAr1310: Move 1310 specific misc register into machine specific files
ARM: SPEAr: DT: Update device nodes
ARM: SPEAr: DT: add uart state to fix warning
ARM: SPEAr: DT: Modify DT bindings for STMMAC
ARM: SPEAr: DT: Fix existing DT support
ARM: SPEAr: DT: Update partition info for MTD devices
ARM: SPEAr: DT: Update pinctrl list
ARM: SPEAr13xx: DT: Add spics gpio controller nodes
Here are more patches in the progression towards multiplatform, sparse
irq conversions in particular.
Tegra has a handful of cleanups and general groundwork, but is
not quite there yet on full enablement.
Platforms that are enabled through this branch are VT8500 and Zynq. note
that i.MX was converted in one of the earlier cleanup branches as
well (before we started a separate topic for multiplatform). And both
new platforms for this merge window, sunxi and bcm, were merged with
multiplatform support enabled.
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Merge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC multiplatform conversion patches from Olof Johansson:
"Here are more patches in the progression towards multiplatform, sparse
irq conversions in particular.
Tegra has a handful of cleanups and general groundwork, but is not
quite there yet on full enablement.
Platforms that are enabled through this branch are VT8500 and Zynq.
Note that i.MX was converted in one of the earlier cleanup branches as
well (before we started a separate topic for multiplatform). And both
new platforms for this merge window, sunxi and bcm, were merged with
multiplatform support enabled."
Fix up conflicts mostly as per Olof.
* tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (29 commits)
ARM: zynq: Remove all unused mach headers
ARM: zynq: add support for ARCH_MULTIPLATFORM
ARM: zynq: make use of debug_ll_io_init()
ARM: zynq: remove TTC early mapping
ARM: tegra: move debug-macro.S to include/debug
ARM: tegra: don't include iomap.h from debug-macro.S
ARM: tegra: decouple uncompress.h and debug-macro.S
ARM: tegra: simplify DEBUG_LL UART selection options
ARM: tegra: select SPARSE_IRQ
ARM: tegra: enhance timer.c to get IO address from device tree
ARM: tegra: enhance timer.c to get IRQ info from device tree
ARM: timer: fix checkpatch warnings
ARM: tegra: add TWD to device tree
ARM: tegra: define DT bindings for and instantiate RTC
ARM: tegra: define DT bindings for and instantiate timer
clocksource/mtu-nomadik: use apb_pclk
clk: ux500: Register mtu apb_pclocks
ARM: plat-nomadik: convert platforms to SPARSE_IRQ
mfd/db8500-prcmu: use the irq_domain_add_simple()
mfd/ab8500-core: use irq_domain_add_simple()
...
Continued device tree conversion and enablement across a number of
platforms; Kirkwood, tegra, i.MX, Exynos, zynq and a couple of other
smaller series as well.
ux500 has seen continued conversion for platforms. Several platforms have
seen pinctrl-via-devicetree conversions for simpler multiplatform. Tegra
is adding data for new devices/drivers, and Exynos has a bunch of new
bindings and devices added as well.
So, pretty much the same progression in the right direction as the last
few releases.
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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 conversions and enablement from Olof Johansson:
"Continued device tree conversion and enablement across a number of
platforms; Kirkwood, tegra, i.MX, Exynos, zynq and a couple of other
smaller series as well.
ux500 has seen continued conversion for platforms. Several platforms
have seen pinctrl-via-devicetree conversions for simpler
multiplatform. Tegra is adding data for new devices/drivers, and
Exynos has a bunch of new bindings and devices added as well.
So, pretty much the same progression in the right direction as the
last few releases."
Fix up conflicts as per Olof.
* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (185 commits)
ARM: ux500: Rename dbx500 cpufreq code to be more generic
ARM: dts: add missing ux500 device trees
ARM: ux500: Stop registering the PCM driver from platform code
ARM: ux500: Move board specific GPIO info out to subordinate DTS files
ARM: ux500: Disable the MMCI gpio-regulator by default
ARM: Kirkwood: remove kirkwood_ehci_init() from new boards
ARM: Kirkwood: Add support LED of OpenBlocks A6
ARM: Kirkwood: Convert to EHCI via DT for OpenBlocks A6
ARM: kirkwood: Add NAND partiton map for OpenBlocks A6
ARM: kirkwood: Add support second I2C bus and RTC on OpenBlocks A6
ARM: kirkwood: Add support DT of second I2C bus
ARM: kirkwood: Convert mplcec4 board to pinctrl
ARM: Kirkwood: Convert km_kirkwood to pinctrl
ARM: Kirkwood: support 98DX412x kirkwoods with pinctrl
ARM: Kirkwood: Convert IX2-200 to pinctrl.
ARM: Kirkwood: Convert lsxl boards to pinctrl.
ARM: Kirkwood: Convert ib62x0 to pinctrl.
ARM: Kirkwood: Convert GoFlex Net to pinctrl.
ARM: Kirkwood: Convert dreamplug to pinctrl.
ARM: Kirkwood: Convert dockstar to pinctrl.
...
This contains the bulk of new SoC development for this merge window.
Two new platforms have been added, the sunxi platforms (Allwinner A1x
SoCs) by Maxime Ripard, and a generic Broadcom platform for a new
series of ARMv7 platforms from them, where the hope is that we can
keep the platform code generic enough to have them all share one mach
directory. The new Broadcom platform is contributed by Christian Daudt.
Highbank has grown support for Calxeda's next generation of hardware,
ECX-2000.
clps711x has seen a lot of cleanup from Alexander Shiyan, and he's also
taken on maintainership of the platform.
Beyond this there has been a bunch of work from a number of people on
converting more platforms to IRQ domains, pinctrl conversion, cleanup
and general feature enablement across most of the active platforms.
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Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC updates from Olof Johansson:
"This contains the bulk of new SoC development for this merge window.
Two new platforms have been added, the sunxi platforms (Allwinner A1x
SoCs) by Maxime Ripard, and a generic Broadcom platform for a new
series of ARMv7 platforms from them, where the hope is that we can
keep the platform code generic enough to have them all share one mach
directory. The new Broadcom platform is contributed by Christian
Daudt.
Highbank has grown support for Calxeda's next generation of hardware,
ECX-2000.
clps711x has seen a lot of cleanup from Alexander Shiyan, and he's
also taken on maintainership of the platform.
Beyond this there has been a bunch of work from a number of people on
converting more platforms to IRQ domains, pinctrl conversion, cleanup
and general feature enablement across most of the active platforms."
Fix up trivial conflicts as per Olof.
* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (174 commits)
mfd: vexpress-sysreg: Remove LEDs code
irqchip: irq-sunxi: Add terminating entry for sunxi_irq_dt_ids
clocksource: sunxi_timer: Add terminating entry for sunxi_timer_dt_ids
irq: versatile: delete dangling variable
ARM: sunxi: add missing include for mdelay()
ARM: EXYNOS: Avoid early use of of_machine_is_compatible()
ARM: dts: add node for PL330 MDMA1 controller for exynos4
ARM: EXYNOS: Add support for secondary CPU bring-up on Exynos4412
ARM: EXYNOS: add UART3 to DEBUG_LL ports
ARM: S3C24XX: Add clkdev entry for camif-upll clock
ARM: SAMSUNG: Add s3c24xx/s3c64xx CAMIF GPIO setup helpers
ARM: sunxi: Add missing sun4i.dtsi file
pinctrl: samsung: Do not initialise statics to 0
ARM i.MX6: remove gate_mask from pllv3
ARM i.MX6: Fix ethernet PLL clocks
ARM i.MX6: rename PLLs according to datasheet
ARM i.MX6: Add pwm support
ARM i.MX51: Add pwm support
ARM i.MX53: Add pwm support
ARM: mx5: Replace clk_register_clkdev with clock DT lookup
...
Cleanup patches for various ARM platforms and some of their associated
drivers. There's also a branch in here that enables Freescale i.MX to be
part of the multiplatform support -- the first "big" SoC that is moved
over (more multiplatform work comes in a separate branch later during
the merge window).
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups on various subarchitectures from Olof Johansson:
"Cleanup patches for various ARM platforms and some of their associated
drivers. There's also a branch in here that enables Freescale i.MX to
be part of the multiplatform support -- the first "big" SoC that is
moved over (more multiplatform work comes in a separate branch later
during the merge window)."
Conflicts fixed as per Olof, including a silent semantic one in
arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to
omap3xxx_restart(), and a new user of the old name was added).
* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits)
ARM: omap: fix typo on timer cleanup
ARM: EXYNOS: Remove unused regs-mem.h file
ARM: EXYNOS: Remove unused non-dt support for dwmci controller
ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan
ARM: OMAP3: cm-t3517: use GPTIMER for system clock
ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER
ARM: SAMSUNG: use devm_ functions for ADC driver
ARM: EXYNOS: no duplicate mask/unmask in eint0_15
ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443
ARM: EXYNOS: Remove i2c0 resource information and setting of device names
ARM: Kirkwood: checkpatch cleanups
ARM: Kirkwood: Fix sparse warnings.
ARM: Kirkwood: Remove unused includes
ARM: kirkwood: cleanup lsxl board includes
ARM: integrator: use BUG_ON where possible
ARM: integrator: push down SC dependencies
ARM: integrator: delete static UART1 mapping
ARM: integrator: delete SC mapping on the CP
ARM: integrator: remove static CP syscon mapping
ARM: integrator: remove static AP syscon mapping
...
Here's the large driver core updates for 3.8-rc1.
The biggest thing here is the various __dev* marking removals. This is
going to be a pain for the merge with different subsystem trees, I know,
but all of the patches included here have been ACKed by their various
subsystem maintainers, as they wanted them to go through here.
If this is too much of a pain, I can pull all of them out of this tree
and just send you one with the other fixes/updates and then, after
3.8-rc1 is out, do the rest of the removals to ensure we catch them all,
it's up to you. The merges should all be trivial, and Stephen has been
doing them all in linux-next for a few weeks now quite easily.
Other than the __dev* marking removals, there's nothing major here, some
firmware loading updates and other minor things in the driver core.
All of these have (much to Stephen's annoyance), been in linux-next for
a while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg Kroah-Hartman:
"Here's the large driver core updates for 3.8-rc1.
The biggest thing here is the various __dev* marking removals. This
is going to be a pain for the merge with different subsystem trees, I
know, but all of the patches included here have been ACKed by their
various subsystem maintainers, as they wanted them to go through here.
If this is too much of a pain, I can pull all of them out of this tree
and just send you one with the other fixes/updates and then, after
3.8-rc1 is out, do the rest of the removals to ensure we catch them
all, it's up to you. The merges should all be trivial, and Stephen
has been doing them all in linux-next for a few weeks now quite
easily.
Other than the __dev* marking removals, there's nothing major here,
some firmware loading updates and other minor things in the driver
core.
All of these have (much to Stephen's annoyance), been in linux-next
for a while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fixed up trivial conflicts in drivers/gpio/gpio-{em,stmpe}.c due to gpio
update.
* tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (93 commits)
modpost.c: Stop checking __dev* section mismatches
init.h: Remove __dev* sections from the kernel
acpi: remove use of __devinit
PCI: Remove __dev* markings
PCI: Always build setup-bus when PCI is enabled
PCI: Move pci_uevent into pci-driver.c
PCI: Remove CONFIG_HOTPLUG ifdefs
unicore32/PCI: Remove CONFIG_HOTPLUG ifdefs
sh/PCI: Remove CONFIG_HOTPLUG ifdefs
powerpc/PCI: Remove CONFIG_HOTPLUG ifdefs
mips/PCI: Remove CONFIG_HOTPLUG ifdefs
microblaze/PCI: Remove CONFIG_HOTPLUG ifdefs
dma: remove use of __devinit
dma: remove use of __devexit_p
firewire: remove use of __devinitdata
firewire: remove use of __devinit
leds: remove use of __devexit
leds: remove use of __devinit
leds: remove use of __devexit_p
mmc: remove use of __devexit
...
Some gate clocks have special needs which must be handled during the
disable-unused clocks sequence. These needs might be driven by software
due to the fact that we're disabling a clock outside of the normal
clk_disable path and a clk's enable_count will not be accurate. On the
other hand a specific hardware programming sequence might need to be
followed for this corner case.
This change is needed for the upcoming OMAP port to the common clock
framework. Specifically, it is undesirable to treat the disable-unused
path identically to the normal clk_disable path since other software
layers are involved. In this case OMAP's clockdomain code throws WARNs
and bails early due to the clock's enable_count being set to zero. A
custom callback mitigates this problem nicely.
Cc: Paul Walmsley <paul@pwsan.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This fixes a bit error in the U8500 clock implementation: the
unused p2_pclk12 registered at bit 12 in periphereral group 6
was defined as using bit 11 rather than bit 12.
When walking over and disabling the unused clocks in the tree
at late init time, p2_pclk12 was disabled, by effectively
clearing the but for p2_pclk11 instead of bit 12 as it should
have, thus disabling gpio block 6 and 7.
Reported-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Philippe Begnic <philippe.begnic@st.com>
Cc: stable@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
From Kukjin Kim:
Just adding camif gpio setup and clkdev.
* 'next/cam-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: S3C24XX: Add clkdev entry for camif-upll clock
ARM: SAMSUNG: Add s3c24xx/s3c64xx CAMIF GPIO setup helpers
+ Linux 3.7-rc6
Conflicts due to the 3.7-rc6 sync: arch/arm/mach-highbank/system.c
include/linux/clk-provider.h, resolved as in other branches.
Signed-off-by: Olof Johansson <olof@lixom.net>
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Acked-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Acked-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Acked-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a clock, C is initialised any orphan clocks listing C as
a possible parent are reparented to it regardless of the
parent requested by the orphan's get_parent() operation.
This means that multiplexers registered before their parents
are reparented to the first parent subsequently declared,
regardless of the selection made by the hardware registers.
For example:
static const char *sel[] = { "srcA", "srcB", "dummy", "srcC" };
child = clk_register_mux(NULL, "child", sel, ARRAY_SIZE(sel), ...);
clk_register_fixed(NULL, "dummy", ...);
clk_register_fixed(NULL, "srcA", ...);
clk_register_fixed(NULL, "srcB", ...);
clk_register_fixed(NULL, "srcC", ...);
Causes child's parent to always be "dummy".
To fix this, when an orphanned clock has a get_parent() operation,
only reparent to the clock indicated by get_parent().
Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: improve $SUBJECT]
The abx500 clock driver is a platform driver which will be initialized
during arch init. The platform device shall be added from the ab-core
driver as a mfd child device to maintain correct boot sequence.
Depending on what ab version we use, different clock definitions will
be added.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This patch moves some global macro definitions to the files where they are used.
Its a step towards removing spear.h completely later on.
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
- ehci-orion dt binding
- gpio-poweroff
- use dt regulators
- move mpp to DT/pinctrl
Depends on:
- orion/boards
- merge conflicts
- keep all 'select's in Kconfig
- remove all #includes in board-*.c
- pinctrl/devel up to:
- 06763c7 pinctrl: mvebu: move to its own directory
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Merge tag 'orion_dt_for_3.8' of git://git.infradead.org/users/jcooper/linux into next/dt
From Jason Cooper:
orion dt for v3.8
- ehci-orion dt binding
- gpio-poweroff
- use dt regulators
- move mpp to DT/pinctrl
Depends on:
- orion/boards
- merge conflicts
- keep all 'select's in Kconfig
- remove all #includes in board-*.c
- pinctrl/devel up to:
- 06763c7 pinctrl: mvebu: move to its own directory
* tag 'orion_dt_for_3.8' of git://git.infradead.org/users/jcooper/linux: (211 commits)
ARM: Kirkwood: remove kirkwood_ehci_init() from new boards
ARM: Kirkwood: Add support LED of OpenBlocks A6
ARM: Kirkwood: Convert to EHCI via DT for OpenBlocks A6
ARM: kirkwood: Add NAND partiton map for OpenBlocks A6
ARM: kirkwood: Add support second I2C bus and RTC on OpenBlocks A6
ARM: kirkwood: Add support DT of second I2C bus
ARM: kirkwood: Convert mplcec4 board to pinctrl
ARM: Kirkwood: Convert km_kirkwood to pinctrl
ARM: Kirkwood: support 98DX412x kirkwoods with pinctrl
ARM: Kirkwood: Convert IX2-200 to pinctrl.
ARM: Kirkwood: Convert lsxl boards to pinctrl.
ARM: Kirkwood: Convert ib62x0 to pinctrl.
ARM: Kirkwood: Convert GoFlex Net to pinctrl.
ARM: Kirkwood: Convert dreamplug to pinctrl.
ARM: Kirkwood: Convert dockstar to pinctrl.
ARM: Kirkwood: Convert dnskw to pinctrl
ARM: Kirkwood: Convert iConnect to pinctrl.
ARM: Kirkwood: Convert TS219 to pinctrl.
ARM: Kirkwood: Add DTSI files for pinctrl
ARM: Kirkwood: Make use of mvebu pincltl and gpio drivers
...
Signed-off-by: Olof Johansson <olof@lixom.net>
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Merge tag 'v3.7-rc7' into next/cleanup
Merging in mainline back to next/cleanup since it has collected a few
conflicts between fixes going upstream and some of the cleanup patches.
Git doesn't auto-resolve some of them, and they're mostly noise so let's
take care of it locally.
Conflicts are in:
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
arch/arm/plat-omap/i2c.c
drivers/video/omap2/dss/dss.c
Signed-off-by: Olof Johansson <olof@lixom.net>
From Michal Simek:
This branch depends on arm-soc devel/debug_ll_init branch because
we needed Rob's "ARM: implement debug_ll_io_init()"
(sha1: afaee03511ba8002b26a9c6b1fe7d6baf33eac86)
patch.
This branch also depends on zynq/dt branch because of previous major
zynq changes.
zynq/cleanup branch is subset of zynq/dt.
* 'zynq/multiplatform' of git://git.monstr.eu/linux-2.6-microblaze:
ARM: zynq: Remove all unused mach headers
ARM: zynq: add support for ARCH_MULTIPLATFORM
ARM: zynq: make use of debug_ll_io_init()
ARM: zynq: remove TTC early mapping
ARM: zynq: add clk binding support to the ttc
ARM: zynq: use zynq clk bindings
clk: Add support for fundamental zynq clks
ARM: zynq: dts: split up device tree
ARM: zynq: Allow UART1 to be used as DEBUG_LL console.
ARM: zynq: dts: add description of the second uart
ARM: zynq: move arm-specific sys_timer out of ttc
zynq: move static peripheral mappings
zynq: remove use of CLKDEV_LOOKUP
zynq: use pl310 device tree bindings
zynq: use GIC device tree bindings
Add/add conflict in arch/arm/Kconfig.debug.
Signed-off-by: Olof Johansson <olof@lixom.net>
Dummy clocks were added for ARM platforms, so that clk_get() for interface clk
doesn't fail for amba devices from amba_probe(). Because there is no amba device
for SPEAr that doesn't have a valid clock with dev_id for SPEAr, we don't need
these dummy clocks. Hence, remove them.
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The patch corrects the case when the rate table is being scanned for a
given frequency, and the search frequency is beyond the maximum
frequency indexed in the table.
By default, the system should be set at max frequency present in the
rate table. This patch correctly returns the corresponding index value.
Signed-off-by: Deepak Sikri <deepak.sikri@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Flag CLK_SET_RATE_PARENT is required for a clock, where we want to
propagate clk_set_rate to its parent. This patch adds this to multiple clocks.
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Vijay Kumar Mishra <vijay.kumar@st.com>
Signed-off-by: Vijay Kumar Mishra <vijay.kumar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This patch updates mux clock names of multiple clocks. It updates _clk with
_mclk to make it more readable.
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
dev_id & con_id names of multiple clocks are incorrect. This patch fixes these
names with the names that come via DT.
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Bhavna Yadav <bhavna.yadav@st.com>
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Deepak Sikri <deepak.sikri@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The ARM IM-PD1 add-on module has a few clock of its own, let's
move also these down to the drivers/clk/versatile driver dir
and get rid of any remaining oldschool Integrator clocks.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
It turns out that all platforms using the ICST VCO are really
just touching two registers, and in the same way as well: one
register with the VCO configuration as such, and one lock register
that makes it possible to write to the VCO.
Factor this register read/write into the ICST driver so we can
reuse it in the IM-PD1 driver.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The GPLv2 headers were missing and the subsystem maintainer likes
them so put them in. I am the copyright holder, so explicitly
licensing these under the GPLv2.
Reported-by: Mike Turquette <mturquette@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
From Mike Turquette:
* depends/clk:
clk: Common clocks implementation for Versatile Express
clk: Versatile Express clock generators ("osc") driver
CLK: clk-twl6040: Initial clock driver for OMAP4+ McPDM fclk clock
clk: fix return value check in sirfsoc_of_clk_init()
clk: fix return value check in of_fixed_clk_setup()
clk: ux500: Update sdmmc clock to 100MHz for u8500
clk: ux500: Support prcmu ape opp voltage clock
mfd: dbx500: Export prmcu_request_ape_opp_100_voltage
clk: Don't return negative numbers for unsigned values with !clk
clk: Fix documentation typos
clk: Document .is_enabled op
clk: SPEAr: Vco-pll: Fix compilation warning
This driver allows to provide DT clocks for clock gates found on
Marvell Dove and Kirkwood SoCs. The clock gates are referenced by
the phandle index of the corresponding bit in the clock gating control
register to ease lookup in the datasheet.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Add Armada 370/XP specific CPU clocks
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
This driver allows to provide DT clocks for core clocks found on
Marvell Kirkwood, Dove & 370/XP SoCs. The core clock frequencies and
ratios are determined by decoding the Sample-At-Reset registers.
Although technically correct, using a divider of 0 will lead to
div_by_zero panic. Let's use a ratio of 0/1 instead to fail later
with a zero clock.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by Gregory CLEMENT <gregory.clement@free-electrons.com>
Use a better name for the USB PHY clock.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This fixes compile error if one of SPEAr3xx implementations is not selected.
CC drivers/clk/spear/spear3xx_clock.o
drivers/clk/spear/spear3xx_clock.c: In function 'spear3xx_clk_init':
drivers/clk/spear/spear3xx_clock.c:599:3: error: implicit declaration of function 'spear300_clk_init' [-Werror=implicit-function-declaration]
drivers/clk/spear/spear3xx_clock.c:601:3: error: implicit declaration of function 'spear310_clk_init' [-Werror=implicit-function-declaration]
drivers/clk/spear/spear3xx_clock.c:603:3: error: implicit declaration of function 'spear320_clk_init' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[3]: *** [drivers/clk/spear/spear3xx_clock.o] Error 1
make[2]: *** [drivers/clk/spear] Error 2
make[1]: *** [drivers/clk] Error 2
make: *** [drivers] Error 2
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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>
The Nomadik NAND driver is really just a subset of the existing
FSMC driver, so let's switch over to using that driver instead,
since it handles more variants of this chip. The callbacks for
setting up the chip is doing stuff now handled by the FSMC
driver.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Make the Zynq platform use the newly created zynq clk bindings.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Provide simplified models for the necessary clocks on the zynq-7000
platform. Currently, the PLLs, the CPU clock network, and the basic
peripheral clock networks (for SDIO, SMC, SPI, QSPI, UART) are modelled.
OF bindings are also provided and documented.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Michal Simek <michal.simek@xilinx.com>
At the same time the prcc bit for the kclk is corrected to
bit 8 instead of 3.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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>
At the same time the prcc bit for the kclk is corrected to
bit 8 instead of 3.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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>
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>
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>
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>
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>
The ux500 clock driver file named u8500_clk.c does not compile
if it loose implicit dependencies to <mach/db8500-regs.h>
(I have no clue what files will include this) which manifests
itself as I'm experimenting with SPARSE_IRQ so make the
dependency explicit.
Cc: Mike Turquette <mturquette@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Fix typo in message reported when unable to lookup the uart1 clock.
Signed-off-by: Domenico Andreoli <domenico.andreoli@linux.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
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
...
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
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
...
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
...
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
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>
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>
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>
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>
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>
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
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
clk_get() returns -ENOENT on error and some careless caller might
dereference it without error checking:
In mxc_rnga_remove():
struct clk *clk = clk_get(&pdev->dev, "rng");
// ...
clk_disable(clk);
Since it's insane to audit the lots of existing and future clk users,
let's add a check in the callee to avoid kernel panic and warn about
any buggy user.
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Viresh Kumar <viresh.kumar@st.com>
Cc: viresh kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
menu "Common Clock Framework" has "depends on COMMON_CLK" and so configs
defined within menu don't require these "depends on COMMON_CLK again".
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jeff Garzik <jgarzik@redhat.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: viresh kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
framework improvments, platform ports and new DT bindings.
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Merge tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux
Pull common clk framework changes from Michael Turquette:
"This includes a small number of core framework improvments, platform
ports and new DT bindings."
Fix up trivial conflicts in drivers/clk/Makefile
* tag 'clk-for-linus' of git://git.linaro.org/people/mturquette/linux: (21 commits)
clk: fix compile for OF && !COMMON_CLK
clk: fix clk_get on of_clk_get_by_name return check
clk: mxs: clk_register_clkdev mx28 usb clocks
clk: add highbank clock support
dt: add clock binding doc to primecell bindings
clk: add DT fixed-clock binding support
clk: add DT clock binding support
ARM: integrator: convert to common clock
clk: add versatile ICST307 driver
ARM: integrator: put symbolic bus names on devices
ARM: u300: convert to common clock
clk: cache parent clocks only for muxes
clk: wm831x: Add initial WM831x clock driver
clk: Constify struct clk_init_data
clk: Add CLK_IS_BASIC flag to identify basic clocks
clk: Add support for rate table based dividers
clk: Add support for power of two type dividers
clk: mxs: imx28: decrease the frequency of ref_io1 for SSP2 and SSP3
clk: mxs: add clkdev lookup for pwm
clk: mxs: Fix the GPMI clock name
...
This adds support for three new SoC types:
* The mvebu platform includes Marvell's Armada XP and Armada 370 chips,
made by the mvebu business unit inside of Marvell. Since the same
group also made the older but similar platforms we call "orion5x",
"kirkwood", "mv78xx0" and "dove", we plan to move all of them into
the mach-mvebu directory in the future.
* socfpga is Altera's platform based on Cortex-A9 cores and a lot of
FPGA space. This is similar to the Xilinx zynq platform we already
support. The code is particularly clean, which is helped by the fact
that the hardware doesn't do much besides the parts that are
expected to get added in the FPGA.
* The OMAP subarchitecture gains support for the latest generation,
the OMAP5 based on the new Cortex-A15 core. Support is rather
rudimentary for now, but will be extended in the future.
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Merge tag 'newsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull support for three new arm SoC types from Arnd Bergmann:
- The mvebu platform includes Marvell's Armada XP and Armada 370 chips,
made by the mvebu business unit inside of Marvell. Since the same
group also made the older but similar platforms we call "orion5x",
"kirkwood", "mv78xx0" and "dove", we plan to move all of them into
the mach-mvebu directory in the future.
- socfpga is Altera's platform based on Cortex-A9 cores and a lot of
FPGA space. This is similar to the Xilinx zynq platform we already
support. The code is particularly clean, which is helped by the fact
that the hardware doesn't do much besides the parts that are expected
to get added in the FPGA.
- The OMAP subarchitecture gains support for the latest generation, the
OMAP5 based on the new Cortex-A15 core. Support is rather
rudimentary for now, but will be extended in the future.
* tag 'newsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (25 commits)
ARM: socfpga: initial support for Altera's SOCFPGA platform
arm: mvebu: generate DTBs for supported SoCs
ARM: mvebu: MPIC: read number of interrupts from control register
arm: mach-mvebu: add entry to MAINTAINERS
arm: mach-mvebu: add compilation/configuration change
arm: mach-mvebu: add defconfig
arm: mach-mvebu: add documentation for new device tree bindings
arm: mach-mvebu: add support for Armada 370 and Armada XP with DT
arm: mach-mvebu: add source files
arm: mach-mvebu: add header
clocksource: time-armada-370-xp: Marvell Armada 370/XP SoC timer driver
ARM: Kconfig update to support additional GPIOs in OMAP5
ARM: OMAP5: Add the build support
arm/dts: OMAP5: Add omap5 dts files
ARM: OMAP5: board-generic: Add device tree support
ARM: omap2+: board-generic: clean up the irq data from board file
ARM: OMAP5: Add SMP support
ARM: OMAP5: Add the WakeupGen IP updates
ARM: OMAP5: l3: Add l3 error handler support for omap5
ARM: OMAP5: gpmc: Update gpmc_init()
...
Conflicts:
Documentation/devicetree/bindings/arm/omap/omap.txt
arch/arm/mach-omap2/Makefile
drivers/clocksource/Kconfig
drivers/clocksource/Makefile
This is stuff that does not fit well into another category and in
particular is not related to a particular board. The largest part
in here is extending the am33xx support in the omap platform.
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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:
"This is stuff that does not fit well into another category and in
particular is not related to a particular board. The largest part in
here is extending the am33xx support in the omap platform."
Fix up trivial conflicts in arch/arm/mach-{imx/mach-mx35_3ds.c, tegra/Makefile}
* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (74 commits)
ARM: LPC32xx: Add PWM support
ARM: LPC32xx: Add PWM clock
ARM: LPC32xx: Set system serial based on cpu unique id
ARM: vexpress: Config option for early printk console
ARM: vexpress: Add Device Tree for V2P-CA15_CA7 core tile
ARM: vexpress: Convert V2P-CA15 Device Tree to 64 bit addresses
ARM: vexpress: Add fixed regulator for SMSC
ARM: vexpress: Add missing SP804 interrupt in motherboard's DTS files
ARM: vexpress: Initial common clock support
ARM: SAMSUNG: Introduce Kconfig variable for Samsung custom clk API
ARM: EXYNOS: Add missing static storage class specifier in pmu.c file
ARM: EXYNOS: Make combiner_init function static
ARM: EXYNOS: Update HSOTG PHY clock setting for EXYNOS4X12
ARM: versatile: Make plat-versatile clock optional
ARM: vexpress: Check master site in daughterboard's sysctl operations
ARM: vexpress: remove automatic errata workaround selection
ARM: LPC32xx: Adjust to pl08x DMA interface changes
ARM: EXYNOS: Clear SYS_WDTRESET bit to use watchdog reset
ARM: imx: fix mx51 ehci setup errors
ARM: imx: make ehci power/oc polarities configurable
...
With commit 766e6a4ec6 (clk: add DT clock binding support),
compiling with OF && !COMMON_CLK is broken.
Reported-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Reported-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The commit 766e6a4 (clk: add DT clock binding support) plugs device
tree clk lookup of_clk_get_by_name into clk_get, and fall on non-DT
lookup clk_get_sys if DT lookup fails.
The return check on of_clk_get_by_name takes (clk != NULL) as a
successful DT lookup. But it's not the case. For any system that
does not define clk lookup in device tree, ERR_PTR(-ENOENT) will be
returned, and consequently, all the client drivers calling clk_get
in their probe functions will fail to probe with error code -ENOENT
returned.
Fix the issue by checking of_clk_get_by_name return with !IS_ERR(clk),
and update of_clk_get and of_clk_get_by_name for !CONFIG_OF build
correspondingly.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Tested-by: Marek Vasut <marex@denx.de>
Tested-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
sys_clk has multiple parents and selection of parent depends on sys_clk_ctrl
register bit no. 23:25, with following possibilities
0XX: pll1_clk
10X: sys_synth_clk
110: pll2_clk
111: pll3_clk
Out of several possibilities (h/w wise) to select same clock parent for
sys_clk, current clock implementation was considering just one value.
When bootloader programmed different (valid) value to select a clock
parent then Linux breaks.
Here, we try to include all possibilities which can lead to same
clock selection thus making Linux independent of bootloader selection
values.
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
This patch is to fix typing mistake of clk enable register of i2c1 and
uart1.
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
The max limit of con_id is 16 and dev_id is 20. As of now for spear6xx, many clk
ids are exceeding this predefined limit.
This patch is intended to rename clk ids like:
mux_clk -> _mclk
gate_clk -> _gclk
synth_clk -> syn_clk
ras_gen1_synth_gate_clk -> ras_syn1_gclk
pll3_48m -> pll3_
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The max limit of con_id is 16 and dev_id is 20. As of now for spear3xx, many clk
ids are exceeding this predefined limit.
This patch is intended to rename clk ids like:
mux_clk -> _mclk
gate_clk -> _gclk
synth_clk -> syn_clk
ras_gen1_synth_gate_clk -> ras_syn1_gclk
ras_pll3_48m -> ras_pll3_
pll3_48m -> pll3_
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The max limit of con_id is 16 and dev_id is 20. As of now for spear1310, many
clk ids are exceeding this predefined limit.
This patch is intended to rename clk ids like:
mux_clk -> _mclk
gate_clk -> _gclk
synth_clk -> syn_clk
gmac_phy -> phy_
gmii_125m_pad -> gmii_pad
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The max limit of con_id is 16 and dev_id is 20. As of now for spear1340, many
clk ids are exceeding this predefined limit.
This patch rename clk ids like:
mux_clk -> _mclk
gate_clk -> _gclk
synth_clk -> syn_clk
gmac_phy -> phy_
gmii_125m_pad_ -> gmii_pad
Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
This adds real clock support to Calxeda Highbank SOC using the common
clock infrastructure.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
[mturquette@linaro.org: fixed up invalid writes to const struct member]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Add support for DT "fixed-clock" binding to the common fixed rate clock
support.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
[Rob Herring] Rework and move into common clock infrastructure
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Based on work 1st by Ben Herrenschmidt and Jeremy Kerr, then by Grant
Likely, this patch adds support to clk_get to allow drivers to retrieve
clock data from the device tree.
Platforms scan for clocks in DT with of_clk_init and a match table, and
the register a provider through of_clk_add_provider. The provider's
clk_src_get function will be called when a device references the
provider's OF node for a clock reference.
v6 (Rob Herring):
- Return error values instead of NULL to match clock framework
expectations
v5 (Rob Herring):
- Move from drivers/of into common clock subsystem
- Squashed "dt/clock: add a simple provider get function" and
"dt/clock: add function to get parent clock name"
- Rebase to 3.4-rc1
- Drop CONFIG_OF_CLOCK and just use CONFIG_OF
- Add missing EXPORT_SYMBOL to various functions
- s/clock-output-name/clock-output-names/
- Define that fixed-clock binding is a single output
v4 (Rob Herring):
- Rework for common clk subsystem
- Add of_clk_get_parent_name function
v3: - Clarified documentation
v2: - fixed errant ';' causing compile error
- Editorial fixes from Shawn Guo
- merged in adding lookup to clkdev
- changed property names to match established convention. After
working with the binding a bit it really made more sense to follow the
lead of 'reg', 'gpios' and 'interrupts' by making the input simply
'clocks' & 'clock-names' instead of 'clock-input-*', and to only use
clock-output* for the producer nodes. (Sorry Shawn, this will mean
you need to change some code, but it should be trivial)
- Add ability to inherit clocks from parent nodes by using an empty
'clock-ranges' property. Useful for busses. I could use some feedback
on the new property name, 'clock-ranges' doesn't feel right to me.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Shawn Guo <shawn.guo@freescale.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This converts the Integrator platform to use common clock
and the ICST driver. Since from this point not all ARM
reference platforms use the clock, we define
CONFIG_PLAT_VERSATILE_CLOCK and select it for all platforms
except the Integrator.
Open issue: I could not use the .init_early() field of the
machine descriptor to initialize the clocks, but had to
move them to .init_irq(), so presumably .init_early() is
so early that common clock is not up, and .init_machine()
is too late since it's needed for the clockevent/clocksource
initialization. Any suggestions on how to solve this is
very welcome.
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
[mturquette@linaro.org: use 'select' instead of versatile Kconfig]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The ICST307 VCO clock has a shared driver in the ARM
architecture. This patch provides a wrapper into the common
clock framework so we can use the implementation in the
ARM architecture without duplicating the code until all
ARM platforms using this VCO are moved over. At that point
we can merge the driver from the ARM platform into the
generic file altogether.
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Mike Turquette <mturquette@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
[mturquette@linaro.org: removed versatile Kconfig]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This converts the U300 clock implementation over to use the common
struct clk and moves the implementation down into drivers/clk.
Since VCO isn't used in tree it was removed, it's not hard to
put it back in if need be.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
[mturquette@linaro.org: trivial Makefile conflict]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
caching parent clocks makes sense only when a clock has more
than one parent (mux clocks).
Avoid doing this for every other clock.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[mturquette@linaro.org: removed extra parentheses]
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The WM831x and WM832x series of PMICs contain a flexible clocking
subsystem intended to provide always on and system core clocks. It
features:
- A 32.768kHz crystal oscillator which can optionally be used to pass
through an externally generated clock.
- A FLL which can be clocked from either the 32.768kHz oscillator or
the CLKIN pin.
- A CLKOUT pin which can bring out either the oscillator or the FLL
output.
- The 32.768kHz clock can also optionally be brought out on the GPIO
pins of the device.
This driver fully supports the 32.768kHz oscillator and CLKOUT. The FLL
is supported only in AUTO mode, the full flexibility of the FLL cannot
currently be used.
Due to a lack of access to systems where the core SoC has been converted
to use the generic clock API this driver has been compile tested only.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Most platforms end up using a mix of basic clock types and
some which use clk_hw_foo struct for filling in custom platform
information when the clocks don't fit into basic types supported.
In platform code, its useful to know if a clock is using a basic
type or clk_hw_foo, which helps platforms know if they can
safely use to_clk_hw_foo to derive the clk_hw_foo pointer from
clk_hw.
Mark all basic clocks with a CLK_IS_BASIC flag.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Some divider clks do not have any obvious relationship
between the divider and the value programmed in the
register. For instance, say a value of 1 could signify divide
by 6 and a value of 2 could signify divide by 4 etc.
Also there are dividers where not all values possible
based on the bitfield width are valid. For instance
a 3 bit wide bitfield can be used to program a value
from 0 to 7. However its possible that only 0 to 4
are valid values.
All these cases need the platform code to pass a simple
table of divider/value tuple, so the framework knows
the exact value to be written based on the divider
calculation and can also do better error checking.
This patch adds support for such rate table based
dividers and as part of the support adds a new
registration function 'clk_register_divider_table()'
and a new macro for static definition
'DEFINE_CLK_DIVIDER_TABLE'.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Quite often dividers and the value programmed in the
register have a relation of 'power of two', something like
value div
0 1
1 2
2 4
3 8...
Add support for such dividers as part of clk-divider.
The clk-divider flag 'CLK_DIVIDER_POWER_OF_TWO' should be used
to define such clocks.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
SSP0 and SSP1 use ref_io0 which has decreased frequency. Expand
the frequency fix for ref_io1 to get SSP2 and SSP3 to work.
Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The below commit introduced a bug in __clk_set_parent()
which could cause it to *skip* the parent validation
which makes sure the parent passed to the api is a valid
one.
commit 7975059db5
Author: Rajendra Nayak <rnayak@ti.com>
Date: Wed Jun 6 14:41:31 2012 +0530
clk: Allow late cache allocation for clk->parents
This was identified by the following compiler warning..
drivers/clk/clk.c: In function '__clk_set_parent':
drivers/clk/clk.c:1083:5: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
.. as reported by Marc Kleine-Budde.
There were various options discussed on how to fix this, one
being initing 'i' to clk->num_parents, but the below approach
was found to be more appropriate as it also makes the 'parent
validation' code simpler to read.
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: stable@kernel.org
The correct name for the GPMI clock is 'gpmi-nand'.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
rename the clock name from `8000c000.gpmi` to `8000c000.gpmi-nand`.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Linus Torvalds