The clock settings are distributed over a regular register and parts of the misccr register. Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx> --- .../bindings/clock/samsung,s3c2410-dclk.txt | 53 ++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt diff --git a/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt b/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt new file mode 100644 index 0000000..0a1f7b1 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/samsung,s3c2410-dclk.txt @@ -0,0 +1,53 @@ +* Samsung S3C24XX External Clock Output Controller + +The S3C24XX series can generate clock signals on two clock output pads. +The clock binding described here is applicable to all SoCs in +the s3c24x family. + +Required Properties: + +- compatible: should be one of the following. + - "samsung,s3c2410-dclk" - controller in S3C2410 SoCs. + - "samsung,s3c2412-dclk" - controller in S3C2412 SoCs. + - "samsung,s3c2440-dclk" - controller in S3C2440 and S3C2442 SoCs. + - "samsung,s3c2443-dclk" - controller in S3C2443 and later SoCs. +- reg: physical base address of the controller and length of memory mapped + region. +- #clock-cells: should be 1. +- samsung,misccr: phandle to the syscon managing the misccr register, which + holds configuration settings for different soc-components (clocks, usb, ...). + +Each clock is assigned an identifier and client nodes can use this identifier +to specify the clock which they consume. + +All available clocks are defined as preprocessor macros in +dt-bindings/clock/samsung,s3c2410-dclk.h header and can be used in device +tree sources. + +To enable the clock outputs it is necessary to configure the pins accordingly +using the pinctrl framework. + +Example: + +&pinctrl_0 { + clkout0: clkout0 { + samsung,pins = "gph-9"; + samsung,pin-function = <2>; + }; + clkout1: clkout1 { + samsung,pins = "gph-10"; + samsung,pin-function = <2>; + }; +}; + +[...] + + clocks: clock-controller@56000084 { + compatible = "samsung,s3c2410-dclk"; + reg = <0x56000084 0x4>; + #clock-cells = <1>; + samsung,misccr = <&misccr>; + + pinctrl-names = "default"; + pinctrl-0 = <&clkout0>, <&clkout1>; + }; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html