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dt: add clock binding doc to primecell bindings

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Add clock binding information for primecell peripherals. For most, a
clock input name of "apb_pclk" is required. Any primecell peripherals
which are different will need to be documented separately.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Rob Herring 2012-04-14 20:30:29 -05:00 committed by Mike Turquette
parent 015ba40246
commit 260b6aa03e
1 changed files with 6 additions and 0 deletions
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6
Documentation/devicetree/bindings/arm/primecell.txt
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@ -13,11 +13,17 @@ Required properties:
Optional properties:
- arm,primecell-periphid : Value to override the h/w value with
- clocks : From common clock binding. First clock is phandle to clock for apb
pclk. Additional clocks are optional and specific to those peripherals.
- clock-names : From common clock binding. Shall be "apb_pclk" for first clock.
Example:
serial@fff36000 {
compatible = "arm,pl011", "arm,primecell";
arm,primecell-periphid = <0x00341011>;
clocks = <&pclk>;
clock-names = "apb_pclk";
};