On Fri, Dec 11, 2015 at 03:45:16PM +0800, Jiancheng Xue wrote:
> add dt-binding document for Hi3519 CRG block
>
> Signed-off-by: Jiancheng Xue <xuejiancheng@xxxxxxxxxx>
> ---
> .../devicetree/bindings/clock/hi3519-crg.txt | 46 ++++++++++++++++++++++
> 1 file changed, 46 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/clock/hi3519-crg.txt
>
> diff --git a/Documentation/devicetree/bindings/clock/hi3519-crg.txt b/Documentation/devicetree/bindings/clock/hi3519-crg.txt
> new file mode 100644
> index 0000000..e0d30a4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/hi3519-crg.txt
> @@ -0,0 +1,46 @@
> +* Hisilicon Hi3519 Clock and Reset Generator(CRG)
> +
> +The Hi3519 CRG module provides clock and reset signals to various
> +controllers within the SoC.
> +
> +This binding uses the following bindings:
> + Documentation/devicetree/bindings/clock/clock-bindings.txt
> + Documentation/devicetree/bindings/reset/reset.txt
> +
> +Required Properties:
> +
> +- compatible: should be one of the following.
> + - "hisilicon,hi3519-crg" - controller compatible with Hi3519 SoC.
> +
> +- reg: physical base address of the controller and length of memory mapped
> + region.
> +
> +- #clock-cells: should be 1.
> +
> +Each clock is assigned an identifier and client nodes use this identifier
> +to specify the clock which they consume.
> +
> +All these identifier could be found in <dt-bindings/clock/hi3519-clock.h>.
This header should be part of this patch.
> +
> +- #reset-cells: should be 2.
> +
> +A reset signal can be controlled by writing a bit register in the CRG module.
> +The reset specifier consists of two cells. The first cell represents the
> +register offset relative to the base address. The second cell represents the
> +bit index in the register.
> +
> +Example: CRG nodes
> +CRG: clock-reset-controller {
clock-reset-controller@12010000
> + compatible = "hisilicon,hi3519-crg";
> + reg = <0x12010000 0x10000>;
> + #clock-cells = <1>;
> + #reset-cells = <2>;
> +};
> +
> +Example: consumer nodes
> +i2c0: i2c@0x12110000 {
Drop '0x'
> + compatible = "hisilicon,hi3519-i2c";
> + reg = <0x12110000 0x1000>;
> + clocks = <&CRG HI3519_I2C0_RST>;*/
> + resets = <&CRG 0xE4 0>;
lowercase hex please
> +};
> --
> 1.9.1
>
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