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

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Message-Id: <20250616070405.4113564-3-mohammad.rafi.shaik@oss.qualcomm.com>
Date: Mon, 16 Jun 2025 12:34:05 +0530
From: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>
To: 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: [PATCH v2 2/2] arm64: dts: qcom: qcs9075-evk: Add sound card

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 {
+		compatible = "maxim,max98357a";
+		#sound-dai-cells = <0>;
+	};
+
+	dmic: audio-codec-1 {
+		compatible = "dmic-codec";
+		#sound-dai-cells = <0>;
+		num-channels = <1>;
+	};
+
+	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";
-- 
2.34.1