Re: [PATCH 5/6] arm64: dts: fsd: Add I2S DAI node for Tesla FSD

[Krzysztof Kozlowski]

On 14/10/2022 06:21, Padmanabhan Rajanbabu wrote:
> Add device tree node for I2S0 and I2S1 CPU DAI instances for Tesla
> FSD board
> 
> Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@xxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/tesla/fsd-evb.dts      |  8 +++++
>  arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi | 14 ++++++++
>  arch/arm64/boot/dts/tesla/fsd.dtsi         | 38 ++++++++++++++++++++++
>  3 files changed, 60 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/tesla/fsd-evb.dts b/arch/arm64/boot/dts/tesla/fsd-evb.dts
> index 1db6ddf03f01..c0a4509499ab 100644
> --- a/arch/arm64/boot/dts/tesla/fsd-evb.dts
> +++ b/arch/arm64/boot/dts/tesla/fsd-evb.dts
> @@ -41,3 +41,11 @@
>  &ufs {
>  	status = "okay";
>  };
> +
> +&tdm_0 {

Alphabetical order against other label-overrides.

> +	status = "okay";
> +};
> +
> +&tdm_1 {
> +	status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
> index e3852c946352..ff6f5d4b16dd 100644
> --- a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
> +++ b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
> @@ -339,6 +339,20 @@
>  		samsung,pin-pud = <FSD_PIN_PULL_UP>;
>  		samsung,pin-drv = <FSD_PIN_DRV_LV4>;
>  	};
> +
> +	i2s0_bus: i2s0-bus {

Does not look like you tested the DTS against bindings. Please run `make
dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
for instructions).

> +		samsung,pins = "gpd1-0", "gpd1-1", "gpd1-2", "gpd1-3", "gpd1-4";
> +		samsung,pin-function = <FSD_PIN_FUNC_2>;
> +		samsung,pin-pud = <FSD_PIN_PULL_DOWN>;
> +		samsung,pin-drv = <FSD_PIN_DRV_LV4>;
> +	};
> +
> +	i2s1_bus: i2s1-bus {
> +		samsung,pins = "gpd2-0", "gpd2-1", "gpd2-2", "gpd2-3", "gpd2-4";
> +		samsung,pin-function = <FSD_PIN_FUNC_2>;
> +		samsung,pin-pud = <FSD_PIN_PULL_DOWN>;
> +		samsung,pin-drv = <FSD_PIN_DRV_LV4>;
> +	};
>  };
>  
>  &pinctrl_pmu {
> diff --git a/arch/arm64/boot/dts/tesla/fsd.dtsi b/arch/arm64/boot/dts/tesla/fsd.dtsi
> index f35bc5a288c2..5decad45a1b6 100644
> --- a/arch/arm64/boot/dts/tesla/fsd.dtsi
> +++ b/arch/arm64/boot/dts/tesla/fsd.dtsi
> @@ -32,6 +32,8 @@
>  		spi0 = &spi_0;
>  		spi1 = &spi_1;
>  		spi2 = &spi_2;
> +		tdm0 = &tdm_0;
> +		tdm1 = &tdm_1;

Why?

>  	};
>  
>  	cpus {
> @@ -809,6 +811,42 @@
>  			status = "disabled";
>  		};
>  
> +		tdm_0: tdm@140e0000 {

Node names should be generic, so this looks like i2s.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +			compatible = "samsung,exynos7-i2s";
> +			reg = <0x0 0x140E0000 0x0 0x100>;
> +			interrupts = <GIC_SPI 206 IRQ_TYPE_LEVEL_HIGH>;
> +			dmas = <&pdma1 14>, <&pdma1 13>, <&pdma1 12>;
> +			dma-names = "tx", "rx", "tx-sec";
> +			#clock-cells = <1>;
> +			#sound-dai-cells = <1>;
> +			clocks = <&clock_peric PERIC_HCLK_TDM0>,
> +				 <&clock_peric PERIC_HCLK_TDM0>,
> +				 <&clock_peric PERIC_PCLK_TDM0>;
> +			clock-names = "i2s_opclk0", "i2s_opclk1", "iis";

Does not look like you tested the DTS against bindings. Please run `make
dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
for instructions).

Best regards,
Krzysztof