linux-kernel - [PATCH 5/5] arm64: dts: qcom: lemans-evk: Add sound card

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Message-Id: <20250826-lemans-evk-bu-v1-5-08016e0d3ce5@oss.qualcomm.com>
Date: Tue, 26 Aug 2025 23:51:04 +0530
From: Wasim Nazir <wasim.nazir@....qualcomm.com>
To: Ulf Hansson <ulf.hansson@...aro.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Richard Cochran <richardcochran@...il.com>
Cc: kernel@....qualcomm.com, linux-mmc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, netdev@...r.kernel.org,
        Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>,
        Wasim Nazir <wasim.nazir@....qualcomm.com>
Subject: [PATCH 5/5] arm64: dts: qcom: lemans-evk: Add sound card

From: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>

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>
Signed-off-by: Wasim Nazir <wasim.nazir@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/lemans-evk.dts | 52 +++++++++++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/lemans.dtsi    | 14 +++++++++
 2 files changed, 66 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
index 642b66c4ad1e..4adf0f956580 100644
--- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
+++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
@@ -7,6 +7,7 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
+#include <dt-bindings/sound/qcom,q6afe.h>
 
 #include "lemans.dtsi"
 #include "lemans-pmics.dtsi"
@@ -26,6 +27,17 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	dmic: audio-codec-0 {
+		compatible = "dmic-codec";
+		#sound-dai-cells = <0>;
+		num-channels = <1>;
+	};
+
+	max98357a: audio-codec-1 {
+		compatible = "maxim,max98357a";
+		#sound-dai-cells = <0>;
+	};
+
 	edp0-connector {
 		compatible = "dp-connector";
 		label = "EDP0";
@@ -73,6 +85,46 @@ vreg_sdc: regulator-vreg-sdc {
 		states = <1800000 0x1
 			  2950000 0x0>;
 	};
+
+	sound {
+		compatible = "qcom,qcs9100-sndcard";
+		model = "LEMANS-EVK";
+
+		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/lemans.dtsi b/arch/arm64/boot/dts/qcom/lemans.dtsi
index 28f0976ab526..c8e6246b6062 100644
--- a/arch/arm64/boot/dts/qcom/lemans.dtsi
+++ b/arch/arm64/boot/dts/qcom/lemans.dtsi
@@ -5047,6 +5047,20 @@ dp1_hot_plug_det: dp1-hot-plug-det-state {
 				bias-disable;
 			};
 
+			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";

-- 
2.51.0