[PATCH v13 2/6] dt-bindings: display: mediatek: control dpi pins mode to avoid leakage

[Chun-Kuang Hu]

Jitao Shi <jitao.shi at mediatek.com> 於 2020年3月11日 週三 下午3:18寫道：

> Add property "pinctrl-names" to swap pin mode between gpio and dpi mode.
> Set
> the dpi pins to gpio mode and output-low to avoid leakage current when dpi
> disabled.
>

Reviewed-by: Chun-Kuang Hu <chunkuang.hu at kernel.org>


>
> Signed-off-by: Jitao Shi <jitao.shi at mediatek.com>
> ---
>  .../devicetree/bindings/display/mediatek/mediatek,dpi.txt  | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git
> a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt
> b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt
> index 58914cf681b8..260ae75ac640 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.txt
> @@ -17,6 +17,10 @@ Required properties:
>    Documentation/devicetree/bindings/graph.txt. This port should be
> connected
>    to the input port of an attached HDMI or LVDS encoder chip.
>
> +Optional properties:
> +- pinctrl-names: Contain "default" and "sleep".
> +  pinctrl-names see
> Documentation/devicetree/bindings/pinctrlpinctrl-bindings.txt
> +
>  Example:
>
>  dpi0: dpi at 1401d000 {
> @@ -27,6 +31,9 @@ dpi0: dpi at 1401d000 {
>                  <&mmsys CLK_MM_DPI_ENGINE>,
>                  <&apmixedsys CLK_APMIXED_TVDPLL>;
>         clock-names = "pixel", "engine", "pll";
> +       pinctrl-names = "default", "sleep";
> +       pinctrl-0 = <&dpi_pin_func>;
> +       pinctrl-1 = <&dpi_pin_idle>;
>
>         port {
>                 dpi0_out: endpoint {
> --
> 2.21.0
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