On Wed, Jan 10, 2018 at 11:48:33PM +0100, Paul Cercueil wrote:
> Add documentation about how to properly use the Ingenic TCU
> (Timer/Counter Unit) clocks driver from devicetree.
>
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
> .../bindings/clock/ingenic,tcu-clocks.txt | 36 ++++++++++++++++++++++
> 1 file changed, 36 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/clock/ingenic,tcu-clocks.txt
>
> v3: New patch in this series
>
> diff --git a/Documentation/devicetree/bindings/clock/ingenic,tcu-clocks.txt b/Documentation/devicetree/bindings/clock/ingenic,tcu-clocks.txt
> new file mode 100644
> index 000000000000..90bb30e07b86
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/ingenic,tcu-clocks.txt
> @@ -0,0 +1,36 @@
> +Ingenic SoC TCU binding
> +
> +The TCU is the Timer/Counter Unit present in all Ingenic SoCs. It features 8
> +channels, each one having its own clock, that can be started and stopped,
> +reparented, and reclocked.
> +
> +Required properties:
> +- compatible : One of:
> + * ingenic,jz4740-tcu-clocks,
> + * ingenic,jz4770-tcu-clocks,
> + * ingenic,jz4780-tcu-clocks.
> +- clocks : List of phandle & clock specifiers for clocks external to the TCU.
> + The "pclk", "rtc" and "ext" clocks should be provided.
> +- clock-names : List of name strings for the external clocks.
> +- #clock-cells: Should be 1.
> + Clock consumers specify this argument to identify a clock. The valid values
> + may be found in <dt-bindings/clock/ingenic,tcu.h>.
Need to say this is a child of "ingenic,tcu" and reference it's binding
doc.
> +
> +Example:
> +
> +/ {
> + mfd@10002000 {
> + compatible = "ingenic,tcu", "simple-mfd", "syscon";
> + reg = <0x10002000 0x1000>;
> +
> + tcu_clk: clocks {
clocks@10002010
And ranges needed.
> + compatible = "ingenic,jz4740-tcu-clocks";
> + reg = <0x10002010 0xFF0>;
0xff0
> +
> + clocks = <&ext>, <&rtc>, <&pclk>;
> + clock-names = "ext", "rtc", "pclk";
> +
> + #clock-cells = <1>;
> + };
> + };
> +};
> --
> 2.11.0
>
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