linux-kernel - [PATCH v4 4/4] arm64: dts: qcom: monaco-evk: Add sound card

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Message-Id: <20250905192350.1223812-5-umang.chheda@oss.qualcomm.com>
Date: Sat,  6 Sep 2025 00:53:50 +0530
From: Umang Chheda <umang.chheda@....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>,
        Richard Cochran <richardcochran@...il.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Umang Chheda <umang.chheda@....qualcomm.com>
Subject: [PATCH v4 4/4] arm64: dts: qcom: monaco-evk: Add sound card

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

Add the sound card for monaco-evk board and verified playback
functionality using the max98357a I2S speaker amplifier and I2S
microphones. The max98357a speaker amplifier is connected via
High-Speed MI2S HS0 interface, while the microphones utilize the
Secondary MI2S interface and also enable required pin controller
gpios for audio.

Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik@....qualcomm.com>
Signed-off-by: Umang Chheda <umang.chheda@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/monaco-evk.dts | 52 +++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/qcs8300.dtsi   | 37 ++++++++++++++++++
 2 files changed, 89 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts
index 93e9e5322a39..f3c5d363921e 100644
--- a/arch/arm64/boot/dts/qcom/monaco-evk.dts
+++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts
@@ -6,6 +6,7 @@
 /dts-v1/;

 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/sound/qcom,q6afe.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>

 #include "qcs8300.dtsi"
@@ -24,6 +25,57 @@ aliases {
 	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>;
+	};
+
+	sound {
+		compatible = "qcom,qcs8275-sndcard";
+		model = "MONACO-EVK";
+
+		pinctrl-0 = <&hs0_mi2s_active>, <&mi2s1_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>;
+			};
+		};
+
+		sec-mi2s-capture-dai-link {
+			link-name = "Secondary MI2S Capture";
+
+			codec {
+				sound-dai = <&dmic>;
+			};
+
+			cpu {
+				sound-dai = <&q6apmbedai SECONDARY_MI2S_TX>;
+			};
+
+			platform {
+				sound-dai = <&q6apm>;
+			};
+		};
+	};
 };

 &apps_rsc {
diff --git a/arch/arm64/boot/dts/qcom/qcs8300.dtsi b/arch/arm64/boot/dts/qcom/qcs8300.dtsi
index 8ae843567ea4..8afd77a2d737 100644
--- a/arch/arm64/boot/dts/qcom/qcs8300.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs8300.dtsi
@@ -4804,6 +4804,43 @@ tlmm: pinctrl@...0000 {
 			#interrupt-cells = <2>;
 			wakeup-parent = <&pdc>;

+			hs0_mi2s_active: hs0-mi2s-active-state {
+				pins = "gpio106", "gpio107", "gpio108", "gpio109";
+				function = "hs0_mi2s";
+				drive-strength = <8>;
+				bias-disable;
+			};
+
+			mi2s1_active: mi2s1-active-state {
+				data0-pins {
+					pins = "gpio100";
+					function = "mi2s1_data0";
+					drive-strength = <8>;
+					bias-disable;
+				};
+
+				data1-pins {
+					pins = "gpio101";
+					function = "mi2s1_data1";
+					drive-strength = <8>;
+					bias-disable;
+				};
+
+				sclk-pins {
+					pins = "gpio98";
+					function = "mi2s1_sck";
+					drive-strength = <8>;
+					bias-disable;
+				};
+
+				ws-pins {
+					pins = "gpio99";
+					function = "mi2s1_ws";
+					drive-strength = <8>;
+					bias-disable;
+				};
+			};
+
 			qup_i2c0_data_clk: qup-i2c0-data-clk-state {
 				pins = "gpio17", "gpio18";
 				function = "qup0_se0";
--
2.34.1