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.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://lore.kernel.org/r/20240226-audio-i350-v8-5-e80a57d026ce@baylibre.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Author: amergnat

arch/arm64/boot/dts/mediatek/mt8365-evk.dts

@@ -4,6 +4,7 @@
  * Authors:
  * Fabien Parent <fparent@baylibre.com>
  * Bernhard Rosenkränzer <bero@baylibre.com>
+ * Alexandre Mergnat <amergnat@baylibre.com>
  */
 
 /dts-v1/;
@@ -86,6 +87,28 @@
 			reg = <0 0x43200000 0 0x00c00000>;
 		};
 	};
+
+	sound: sound {
+		compatible = "mediatek,mt8365-mt6357";
+		pinctrl-names = "default",
+				"dmic",
+				"miso_off",
+				"miso_on",
+				"mosi_off",
+				"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>;
+		mediatek,platform = <&afe>;
+	};
+};
+
+&afe {
+	mediatek,dmic-mode = <1>;
+	status = "okay";
 };
 
 &cpu0 {
@@ -178,9 +201,72 @@
 	interrupts-extended = <&pio 145 IRQ_TYPE_LEVEL_HIGH>;
 	interrupt-controller;
 	#interrupt-cells = <2>;
+	mediatek,micbias0-microvolt = <1900000>;
+	mediatek,micbias1-microvolt = <1700000>;
 };
 
 &pio {
+	aud_default_pins: audiodefault-pins {
+		clk-dat-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 {
+		clk-dat-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 {
+		clk-dat-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 = <2>;
+		};
+	};
+
+	aud_miso_on_pins: misoon-pins {
+		clk-dat-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 = <6>;
+		};
+	};
+
+	aud_mosi_off_pins: mosioff-pins {
+		clk-dat-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 = <2>;
+		};
+	};
+
+	aud_mosi_on_pins: mosion-pins {
+		clk-dat-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 = <6>;
+		};
+	};
+
 	ethernet_pins: ethernet-pins {
 		phy_reset_pins {
 			pinmux = <MT8365_PIN_133_TDM_TX_DATA1__FUNC_GPIO133>;