AcoSail/kernel_optimize_test
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766e6a4ec6
kernel_optimize_test/drivers/clk
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Grant Likely 766e6a4ec6 clk: add DT clock binding support 
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>
2012-07-11 17:58:45 -07:00
..
mxs Merge branch 'clk/mxs-for-3.6' of git://git.linaro.org/people/shawnguo/linux-2.6 into clk-3.6 2012-07-11 17:57:49 -07:00
spear clk: SPEAr600: Fix ethernet clock name for DT based probing 2012-06-25 16:51:47 -07:00
versatile ARM: integrator: convert to common clock 2012-07-11 17:58:45 -07:00
clk-divider.c clk: Add CLK_IS_BASIC flag to identify basic clocks 2012-07-11 15:36:43 -07:00
clk-fixed-factor.c clk: Add CLK_IS_BASIC flag to identify basic clocks 2012-07-11 15:36:43 -07:00
clk-fixed-rate.c clk: Add CLK_IS_BASIC flag to identify basic clocks 2012-07-11 15:36:43 -07:00
clk-gate.c clk: Add CLK_IS_BASIC flag to identify basic clocks 2012-07-11 15:36:43 -07:00
clk-mux.c clk: Add CLK_IS_BASIC flag to identify basic clocks 2012-07-11 15:36:43 -07:00
clk-u300.c ARM: u300: convert to common clock 2012-07-11 15:36:45 -07:00
clk-wm831x.c clk: wm831x: Add initial WM831x clock driver 2012-07-11 15:36:44 -07:00
clk.c clk: add DT clock binding support 2012-07-11 17:58:45 -07:00
clkdev.c clk: add DT clock binding support 2012-07-11 17:58:45 -07:00
Kconfig clk: wm831x: Add initial WM831x clock driver 2012-07-11 15:36:44 -07:00
Makefile clk: add versatile ICST307 driver 2012-07-11 17:58:44 -07:00