linux-kernel - [PATCH] arm64: dts: mediatek: mt8395-genio-1200-evk: Enable Audio DSP and sound card

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Message-Id: <20250526-mt8395-genio-1200-evk-sound-v1-1-142fb15292c5@collabora.com>
Date: Mon, 26 May 2025 12:45:27 +0200
From: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: kernel@...labora.com, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, 
 Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
Subject: [PATCH] arm64: dts: mediatek: mt8395-genio-1200-evk: Enable Audio
 DSP and sound card

Add in the mt8395-genio-1200-evk devicetree the memory regions for the
Audio DSP (ADSP) and Audio Front-End (AFE), and a sound card node
configured to use the ADSP.
This enables audio output through the 3.5mm headphone jacks (speaker or
earphone), available on the board.

Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
---
Tested on a Mediatek Genio 1200-EVK board with a kernel
based on linux-next (tag: next-20250526).
---
 .../boot/dts/mediatek/mt8395-genio-1200-evk.dts    | 46 +++++++++++++++++++++-
 1 file changed, 44 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts b/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
index be5e5f339e811728e91b1ffec45ada25f9b0208b..9f0734731b5ef3c6b86693a389adc399707d5212 100644
--- a/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
@@ -79,9 +79,21 @@ bl31_secmon_mem: memory@...00000 {
 			reg = <0 0x54600000 0x0 0x200000>;
 		};
 
-		snd_dma_mem: memory@...00000 {
+		adsp_mem: memory@...00000 {
 			compatible = "shared-dma-pool";
-			reg = <0 0x60000000 0 0x1100000>;
+			reg = <0 0x60000000 0 0xf00000>;
+			no-map;
+		};
+
+		afe_dma_mem: memory@...00000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x60f00000 0 0x100000>;
+			no-map;
+		};
+
+		adsp_dma_mem: memory@...00000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x61000000 0 0x100000>;
 			no-map;
 		};
 
@@ -179,6 +191,16 @@ wifi_fixed_3v3: regulator-2 {
 	};
 };
 
+&adsp {
+	memory-region = <&adsp_dma_mem>, <&adsp_mem>;
+	status = "okay";
+};
+
+&afe {
+	memory-region = <&afe_dma_mem>;
+	status = "okay";
+};
+
 &disp_pwm0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&disp_pwm0_pins>;
@@ -976,6 +998,26 @@ &scp {
 	status = "okay";
 };
 
+&sound {
+	compatible = "mediatek,mt8195_mt6359";
+	model = "mt8395-evk";
+	pinctrl-names = "default";
+	pinctrl-0 = <&audio_default_pins>;
+	audio-routing =
+		"Headphone", "Headphone L",
+		"Headphone", "Headphone R";
+	mediatek,adsp = <&adsp>;
+	status = "okay";
+
+	headphone-dai-link {
+		link-name = "DL_SRC_BE";
+
+		codec {
+			sound-dai = <&pmic 0>;
+		};
+	};
+};
+
 &spi1 {
 	pinctrl-0 = <&spi1_pins>;
 	pinctrl-names = "default";

---
base-commit: 22d449bcd69e66f25fe847b678738950dcf9301e
change-id: 20250521-mt8395-genio-1200-evk-sound-5a88bcfa3e0c

Best regards,
-- 
Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>