Re: [PATCH 7/7] arm64: dts: qcom: msm8998-xperia: Add audio clock and its pin

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On Fri 03 Sep 11:09 PDT 2021, AngeloGioacchino Del Regno wrote:

> All smartphones of this platform are equipped with a WCD9335 audio
> codec, getting its MCLK from PM8998 gpio13: add this clock to DT.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxxx>
> Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
> ---
>  .../dts/qcom/msm8998-sony-xperia-yoshino.dtsi | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi b/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi
> index 5fbe5abf4133..7aeebd3b2e9e 100644
> --- a/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi
> @@ -20,6 +20,19 @@ / {
>  	qcom,msm-id = <0x124 0x20000>, <0x124 0x20001>; /* 8998v2, v2.1 */
>  	qcom,board-id = <8 0>;
>  
> +	clocks {
> +		compatible = "simple-bus";
> +
> +		div1_mclk: divclk1 {
> +			compatible = "gpio-gate-clock";
> +			pinctrl-0 = <&audio_mclk_pin>;
> +			pinctrl-names = "default";
> +			clocks = <&rpmcc RPM_SMD_DIV_CLK1>;

What controls the clock rate of divclk1?

Regards,
Bjorn

> +			#clock-cells = <0>;
> +			enable-gpios = <&pm8998_gpio 13 GPIO_ACTIVE_HIGH>;
> +		};
> +	};
> +
>  	board_vbat: vbat-regulator {
>  		compatible = "regulator-fixed";
>  		regulator-name = "VBAT";
> @@ -313,6 +326,12 @@ cam_snapshot_pin_a: cam-snapshot-btn-active {
>  		input-enable;
>  		qcom,drive-strength = <PMIC_GPIO_STRENGTH_NO>;
>  	};
> +
> +	audio_mclk_pin: audio-mclk-pin-active {
> +		pins = "gpio13";
> +		function = "func2";
> +		power-source = <0>;
> +	};
>  };
>  
>  &pmi8998_gpio {
> -- 
> 2.32.0
> 



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