linux-kernel - [PATCH 18/18] arm64: dts: mediatek: add audio support for mt8365-evk

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Date: Mon, 26 Feb 2024 15:01:56 +0100
From: Alexandre Mergnat <amergnat@...libre.com>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Lee Jones <lee@...nel.org>, Flora Fu <flora.fu@...iatek.com>, 
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 Sumit Semwal <sumit.semwal@...aro.org>, 
 Christian König <christian.koenig@....com>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>
Cc: linux-sound@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, linux-media@...r.kernel.org, 
 dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org, 
 Alexandre Mergnat <amergnat@...libre.com>
Subject: [PATCH 18/18] arm64: dts: mediatek: add audio support for
 mt8365-evk

Add the sound node which is linked to the MT8365 SoC AFE and
the MT6357 audio codec.

Update the file header.

Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 95 +++++++++++++++++++++++++++--
 1 file changed, 91 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 50cbaefa1a99..818a8d263949 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -1,9 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2021-2022 BayLibre, SAS.
- * Authors:
- * Fabien Parent <fparent@...libre.com>
- * Bernhard Rosenkränzer <bero@...libre.com>
+ * Copyright (c) 2024 BayLibre, SAS.
+ * Authors: Fabien Parent <fparent@...libre.com>
+ *	    Bernhard Rosenkränzer <bero@...libre.com>
+ *	    Alexandre Mergnat <amergnat@...libre.com>
  */
 
 /dts-v1/;
@@ -86,6 +86,25 @@ optee_reserved: optee@...00000 {
 			reg = <0 0x43200000 0 0x00c00000>;
 		};
 	};
+
+	sound: sound {
+		compatible = "mediatek,mt8365-mt6357";
+		mediatek,platform = <&afe>;
+		pinctrl-names = "aud_default",
+			"aud_dmic",
+			"aud_miso_off",
+			"aud_miso_on",
+			"aud_mosi_off",
+			"aud_mosi_on";
+		pinctrl-0 = <&aud_default_pins>;
+		pinctrl-1 = <&aud_dmic_pins>;
+		pinctrl-2 = <&aud_miso_off_pins>;
+		pinctrl-3 = <&aud_miso_on_pins>;
+		pinctrl-4 = <&aud_mosi_off_pins>;
+		pinctrl-5 = <&aud_mosi_on_pins>;
+		vaud28-supply = <&mt6357_vaud28_reg>;
+		status = "okay";
+	};
 };
 
 &cpu0 {
@@ -181,6 +200,67 @@ &mt6357_pmic {
 };
 
 &pio {
+	aud_default_pins: audiodefault-pins {
+		pins {
+		pinmux = <MT8365_PIN_72_CMDAT4__FUNC_I2S3_BCK>,
+			 <MT8365_PIN_73_CMDAT5__FUNC_I2S3_LRCK>,
+			 <MT8365_PIN_74_CMDAT6__FUNC_I2S3_MCK>,
+			 <MT8365_PIN_75_CMDAT7__FUNC_I2S3_DO>;
+		};
+	};
+
+	aud_dmic_pins: audiodmic-pins {
+		pins {
+		pinmux = <MT8365_PIN_117_DMIC0_CLK__FUNC_DMIC0_CLK>,
+			 <MT8365_PIN_118_DMIC0_DAT0__FUNC_DMIC0_DAT0>,
+			 <MT8365_PIN_119_DMIC0_DAT1__FUNC_DMIC0_DAT1>;
+		};
+	};
+
+	aud_miso_off_pins: misooff-pins {
+		pins {
+		pinmux = <MT8365_PIN_53_AUD_CLK_MISO__FUNC_GPIO53>,
+			 <MT8365_PIN_54_AUD_SYNC_MISO__FUNC_GPIO54>,
+			 <MT8365_PIN_55_AUD_DAT_MISO0__FUNC_GPIO55>,
+			 <MT8365_PIN_56_AUD_DAT_MISO1__FUNC_GPIO56>;
+		input-enable;
+		bias-pull-down;
+		drive-strength = <MTK_DRIVE_2mA>;
+		};
+	};
+
+	aud_miso_on_pins: misoon-pins {
+		pins {
+		pinmux = <MT8365_PIN_53_AUD_CLK_MISO__FUNC_AUD_CLK_MISO>,
+			 <MT8365_PIN_54_AUD_SYNC_MISO__FUNC_AUD_SYNC_MISO>,
+			 <MT8365_PIN_55_AUD_DAT_MISO0__FUNC_AUD_DAT_MISO0>,
+			 <MT8365_PIN_56_AUD_DAT_MISO1__FUNC_AUD_DAT_MISO1>;
+		drive-strength = <MTK_DRIVE_6mA>;
+		};
+	};
+
+	aud_mosi_off_pins: mosioff-pins {
+		pins {
+		pinmux = <MT8365_PIN_49_AUD_CLK_MOSI__FUNC_GPIO49>,
+			 <MT8365_PIN_50_AUD_SYNC_MOSI__FUNC_GPIO50>,
+			 <MT8365_PIN_51_AUD_DAT_MOSI0__FUNC_GPIO51>,
+			 <MT8365_PIN_52_AUD_DAT_MOSI1__FUNC_GPIO52>;
+		input-enable;
+		bias-pull-down;
+		drive-strength = <MTK_DRIVE_2mA>;
+		};
+	};
+
+	aud_mosi_on_pins: mosion-pins {
+		pins {
+		pinmux = <MT8365_PIN_49_AUD_CLK_MOSI__FUNC_AUD_CLK_MOSI>,
+			 <MT8365_PIN_50_AUD_SYNC_MOSI__FUNC_AUD_SYNC_MOSI>,
+			 <MT8365_PIN_51_AUD_DAT_MOSI0__FUNC_AUD_DAT_MOSI0>,
+			 <MT8365_PIN_52_AUD_DAT_MOSI1__FUNC_AUD_DAT_MOSI1>;
+		drive-strength = <MTK_DRIVE_6mA>;
+		};
+	};
+
 	ethernet_pins: ethernet-pins {
 		phy_reset_pins {
 			pinmux = <MT8365_PIN_133_TDM_TX_DATA1__FUNC_GPIO133>;
@@ -416,3 +496,10 @@ &uart2 {
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&afe {
+	mediatek,dmic-iir-on;
+	mediatek,dmic-irr-mode = <5>;
+	mediatek,dmic-two-wire-mode;
+	status = "okay";
+};

-- 
2.25.1