[PATCH v2 4/6] dt: bindings: add mt7621-pll dt binding documentation

Rob Herring robh at kernel.org
Tue Aug 13 15:51:43 UTC 2019


On Wed, Jul 24, 2019 at 10:23:08AM +0800, Chuanhong Guo wrote:
> This commit adds device tree binding documentation for MT7621
> PLL controller.
> 
> Signed-off-by: Chuanhong Guo <gch981213 at gmail.com>
> ---
> 
> Change since v1:
> drop useless syscon in compatible string
> 
>  .../bindings/clock/mediatek,mt7621-pll.txt     | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/mediatek,mt7621-pll.txt
> 
> diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt7621-pll.txt b/Documentation/devicetree/bindings/clock/mediatek,mt7621-pll.txt
> new file mode 100644
> index 000000000000..7dcfbd5283e3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/mediatek,mt7621-pll.txt
> @@ -0,0 +1,18 @@
> +Binding for Mediatek MT7621 PLL controller
> +
> +The PLL controller provides the 2 main clocks of the SoC: CPU and BUS.
> +
> +Required Properties:
> +- compatible: has to be "mediatek,mt7621-pll"
> +- #clock-cells: has to be one
> +
> +Optional properties:
> +- clock-output-names: should be "cpu", "bus"
> +
> +Example:
> +	pll {
> +		compatible = "mediatek,mt7621-pll";

You didn't answer Stephen's question on v1.

Based on this binding, there is no way to control/program the PLL. Is 
this part of some IP block?

> +
> +		#clock-cells = <1>;
> +		clock-output-names = "cpu", "bus";
> +	};
> -- 
> 2.21.0
> 


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