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SubjectRe: [PATCH] arm64: dts: mediatek: Add smi_common node for MT8183
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On 01/10/2020 18:28, Enric Balletbo i Serra wrote:
> The SMI (Smart Multimedia Interface) Common is a bridge between the m4u
> (Multimedia Memory Management Unit) and the Multimedia HW. This block is
> needed to support different multimedia features, like display, video
> decode, and camera. Also is needed to control the power domains of such
> HW blocks.
>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---
>
> arch/arm64/boot/dts/mediatek/mt8183.dtsi | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> index c2fd141afcf6..9082bc65e15e 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> @@ -916,6 +916,16 @@ mmsys: syscon@14000000 {
> #clock-cells = <1>;
> };
>
> + smi_common: smi@14019000 {
> + compatible = "mediatek,mt8183-smi-common", "syscon";
> + reg = <0 0x14019000 0 0x1000>;
> + clocks = <&mmsys CLK_MM_SMI_COMMON>,
> + <&mmsys CLK_MM_SMI_COMMON>,
> + <&mmsys CLK_MM_GALS_COMM0>,
> + <&mmsys CLK_MM_GALS_COMM1>;
> + clock-names = "apb", "smi", "gals0", "gals1";
> + };
> +

Having a look at the bindings description, it states that the power-domains
phandle is a required property.
So I suppose you have to base this on the power domains series.

Regards,
Matthias

> imgsys: syscon@15020000 {
> compatible = "mediatek,mt8183-imgsys", "syscon";
> reg = <0 0x15020000 0 0x1000>;
>

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