linux-kernel - Re: [PATCH v2 2/2] arm64: dts: qcom: qcs9075-evk: Add sound card

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Message-ID: <6463f18d-b258-4773-aa12-d3ae3af60715@oss.qualcomm.com>
Date: Mon, 16 Jun 2025 14:24:16 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_pkumpatl@...cinc.com,
        kernel@....qualcomm.com
Subject: Re: [PATCH v2 2/2] arm64: dts: qcom: qcs9075-evk: Add sound card

On 16/06/2025 10:04, Mohammad Rafi Shaik wrote:
> Add the sound card node with tested playback over max98357a
> I2S speakers amplifier and I2S mic.
> 
> Introduce HS (High-Speed) MI2S pin control support.
> The I2S max98357a speaker amplifier is connected via HS0 and I2S
> microphones utilize the HS2 interface.
> 
> Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>
> ---
>   .../boot/dts/qcom/qcs9075-iq-9075-evk.dts     | 52 +++++++++++++++++++
>   arch/arm64/boot/dts/qcom/sa8775p.dtsi         | 14 +++++
>   2 files changed, 66 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts b/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
> index ab161180d1d5..d073c6f95d4c 100644
> --- a/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
> @@ -5,6 +5,7 @@
>   /dts-v1/;
>   
>   #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/sound/qcom,q6afe.h>
>   #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
>   
>   #include "qcs9075.dtsi"
> @@ -21,6 +22,57 @@ aliases {
>   	chosen {
>   		stdout-path = "serial0:115200n8";
>   	};
> +
> +	max98357a: audio-codec-0 {

This wasn't sorted out properly.

> +		compatible = "maxim,max98357a";

No SD_MODE pin?

> +		#sound-dai-cells = <0>;
> +	};
> +
> +	dmic: audio-codec-1 {
> +		compatible = "dmic-codec";
> +		#sound-dai-cells = <0>;
> +		num-channels = <1>;

no enable GPIO, no vref-supply?

> +	};
> +
> +	sound {
> +		compatible = "qcom,qcs9075-sndcard";
> +		model = "qcs9075-iq-evk-snd-card";
> +
> +		pinctrl-0 = <&hs0_mi2s_active>, <&hs2_mi2s_active>;
> +		pinctrl-names = "default";
> +
> +		hs0-mi2s-playback-dai-link {
> +			link-name = "HS0 mi2s playback";
> +
> +			codec {
> +				sound-dai = <&max98357a>;
> +			};
> +
> +			cpu {
> +				sound-dai = <&q6apmbedai PRIMARY_MI2S_RX>;
> +			};
> +
> +			platform {
> +				sound-dai = <&q6apm>;
> +			};
> +		};
> +
> +		hs2-mi2s-capture-dai-link {
> +			link-name = "HS2 mi2s capture";
> +
> +			codec {
> +				sound-dai = <&dmic>;
> +			};
> +
> +			cpu {
> +				sound-dai = <&q6apmbedai TERTIARY_MI2S_TX>;
> +			};
> +
> +			platform {
> +				sound-dai = <&q6apm>;
> +			};
> +		};
> +	};
>   };
>   
>   &apps_rsc {
> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> index 07ca6dd4f759..968730da180d 100644
> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> @@ -4711,6 +4711,20 @@ tlmm: pinctrl@...0000 {
>   			gpio-ranges = <&tlmm 0 0 149>;
>   			wakeup-parent = <&pdc>;
>   
> +			hs0_mi2s_active: hs0-mi2s-active-state {
> +				pins = "gpio114", "gpio115", "gpio116", "gpio117";
> +				function = "hs0_mi2s";
> +				drive-strength = <8>;
> +				bias-disable;
> +			};
> +
> +			hs2_mi2s_active: hs2-mi2s-active-state {
> +				pins = "gpio122", "gpio123", "gpio124", "gpio125";
> +				function = "hs2_mi2s";
> +				drive-strength = <8>;
> +				bias-disable;
> +			};
> +
>   			qup_i2c0_default: qup-i2c0-state {
>   				pins = "gpio20", "gpio21";
>   				function = "qup0_se0";


-- 
With best wishes
Dmitry