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SubjectRe: [PATCH] arm64: dts: rockchip: add SPDIF node for rk3399-rockpro64
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Hi Katsuhiro,

On 8/1/20 7:49 PM, Katsuhiro Suzuki wrote:
> This patch adds 'disabled' SPDIF sound node and related settings
> for rk3399-rockpro64.
>
> There are 2 reasons:
> - All RK3399 dma-bus channels have been already used by I2S0/1/2
> - RockPro64 does not have SPDIF optical nor coaxial connector,
> just have 3pins
>
> Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
> ---
> .../boot/dts/rockchip/rk3399-rockpro64.dtsi | 28 +++++++++++++++++++
> 1 file changed, 28 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
> index 6e553ff47534..e35b30f8a46e 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
> @@ -76,6 +76,23 @@ sound {
> dais = <&i2s1_p0>;
> };
>
> + sound-dit {
> + compatible = "audio-graph-card";
> + label = "rockchip,rk3399";
> + dais = <&spdif_p0>;
> + };
> +
> + spdif-dit {
> + compatible = "linux,spdif-dit";
> + #sound-dai-cells = <0>;
> +
> + port {
> + dit_p0_0: endpoint {
> + remote-endpoint = <&spdif_p0_0>;
> + };
> + };
> + };
> +
> vcc12v_dcin: vcc12v-dcin {
> compatible = "regulator-fixed";
> regulator-name = "vcc12v_dcin";
> @@ -698,6 +715,17 @@ &sdhci {
> status = "okay";
> };
>
> +&spdif {
> + pinctrl-0 = <&spdif_bus_1>;

> + status = "disabled";

The status is already disabled.
Adding more unused nodes and properties doesn't make sense here.

spdif: spdif@ff870000 {
compatible = "rockchip,rk3399-spdif";
reg = <0x0 0xff870000 0x0 0x1000>;
interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH 0>;
dmas = <&dmac_bus 7>;
dma-names = "tx";
clock-names = "mclk", "hclk";
clocks = <&cru SCLK_SPDIF_8CH>, <&cru HCLK_SPDIF>;
pinctrl-names = "default";
pinctrl-0 = <&spdif_bus>;
power-domains = <&power RK3399_PD_SDIOAUDIO>;
#sound-dai-cells = <0>;
status = "disabled";
};

> +
> + spdif_p0: port {
> + spdif_p0_0: endpoint {
> + remote-endpoint = <&dit_p0_0>;
> + };
> + };
> +};
> +
> &spi1 {
> status = "okay";
>
>

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