arm64: dts: ti: k3-j722s-evm: Enable analog audio support

The audio support on J722S-EVM is using TLV320AIC3106[0] codec
connected to McASP1 serializers.

- Add the nodes for sound-card, audio codec and McASP1.
- Add hog for TRC_MUX_SEL to select between McASP and TRACE signals
- Add hogs for GPIO_AUD_RSTn and MCASP1_FET_SEL which is used to
  switch between HDMI audio and codec audio.
- Add pinmux for MCASP1 and AUDIO_EXT_REFCLK1.

[0]: <https://www.ti.com/lit/gpn/TLV320AIC3106>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Reviewed-by: Jai Luthra <j-luthra@ti.com>
Link: https://lore.kernel.org/r/20240625113301.217369-3-j-choudhary@ti.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-j722s-evm.dts

@@ -107,6 +107,15 @@ vdd_sd_dv: regulator-TLV71033 {
 			 <3300000 0x1>;
 	};
 
+	vsys_io_3v3: regulator-vsys-io-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_io_3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
 	vsys_io_1v8: regulator-vsys-io-1v8 {
 		compatible = "regulator-fixed";
 		regulator-name = "vsys_io_1v8";
@@ -124,6 +133,35 @@ vsys_io_1v2: regulator-vsys-io-1v2 {
 		regulator-always-on;
 		regulator-boot-on;
 	};
+
+	codec_audio: sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "J722S-EVM";
+		simple-audio-card,widgets =
+			"Headphone",	"Headphone Jack",
+			"Line",		"Line In",
+			"Microphone",	"Microphone Jack";
+		simple-audio-card,routing =
+			"Headphone Jack",	"HPLOUT",
+			"Headphone Jack",	"HPROUT",
+			"LINE1L",		"Line In",
+			"LINE1R",		"Line In",
+			"MIC3R",		"Microphone Jack",
+			"Microphone Jack",	"Mic Bias";
+		simple-audio-card,format = "dsp_b";
+		simple-audio-card,bitclock-master = <&sound_master>;
+		simple-audio-card,frame-master = <&sound_master>;
+		simple-audio-card,bitclock-inversion;
+
+		simple-audio-card,cpu {
+			sound-dai = <&mcasp1>;
+		};
+
+		sound_master: simple-audio-card,codec {
+			sound-dai = <&tlv320aic3106>;
+			clocks = <&audio_refclk1>;
+		};
+	};
 };
 
 &main_pmx0 {
@@ -210,6 +248,21 @@ main_usb1_pins_default: main-usb1-default-pins {
 			J722S_IOPAD(0x0258, PIN_INPUT, 0) /* (B27) USB1_DRVVBUS */
 		>;
 	};
+
+	main_mcasp1_pins_default: main-mcasp1-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x0090, PIN_INPUT, 2) /* (P27) GPMC0_BE0n_CLE.MCASP1_ACLKX */
+			J722S_IOPAD(0x0098, PIN_INPUT, 2) /* (V21) GPMC0_WAIT0.MCASP1_AFSX */
+			J722S_IOPAD(0x008c, PIN_OUTPUT, 2) /* (N23) GPMC0_WEn.MCASP1_AXR0 */
+			J722S_IOPAD(0x0084, PIN_INPUT, 2) /* (N21) GPMC0_ADVn_ALE.MCASP1_AXR2 */
+		>;
+	};
+
+	audio_ext_refclk1_pins_default: audio-ext-refclk1-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x00a0, PIN_OUTPUT, 1) /* (N24) GPMC0_WPn.AUDIO_EXT_REFCLK1 */
+		>;
+	};
 };
 
 &cpsw3g {
@@ -285,6 +338,12 @@ &wkup_i2c0 {
 	bootph-all;
 };
 
+&k3_clks {
+	/* Configure AUDIO_EXT_REFCLK1 pin as output */
+	pinctrl-names = "default";
+	pinctrl-0 = <&audio_ext_refclk1_pins_default>;
+};
+
 &main_i2c0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_i2c0_pins_default>;
@@ -316,6 +375,41 @@ p05-hog {
 			gpios = <5 GPIO_ACTIVE_HIGH>;
 			output-high;
 		};
+
+		p01_hog: p01-hog {
+			/* P01 - TRC_MUX_SEL */
+			gpio-hog;
+			gpios = <0 GPIO_ACTIVE_HIGH>;
+			output-low;
+			line-name = "TRC_MUX_SEL";
+		};
+
+		p02_hog: p02-hog {
+			/* P02 - MCASP1_FET_SEL */
+			gpio-hog;
+			gpios = <2 GPIO_ACTIVE_HIGH>;
+			output-high;
+			line-name = "MCASP1_FET_SEL";
+		};
+
+		p13_hog: p13-hog {
+			/* P13 - GPIO_AUD_RSTn */
+			gpio-hog;
+			gpios = <13 GPIO_ACTIVE_HIGH>;
+			output-high;
+			line-name = "GPIO_AUD_RSTn";
+		};
+	};
+
+	tlv320aic3106: audio-codec@1b {
+		#sound-dai-cells = <0>;
+		compatible = "ti,tlv320aic3106";
+		reg = <0x1b>;
+		ai3x-micbias-vg = <1>;  /* 2.0V */
+		AVDD-supply = <&vsys_io_3v3>;
+		IOVDD-supply = <&vsys_io_3v3>;
+		DRVDD-supply = <&vsys_io_3v3>;
+		DVDD-supply = <&vsys_io_1v8>;
 	};
 };
 
@@ -457,3 +551,18 @@ &usb1 {
 	phys = <&serdes0_usb_link>;
 	phy-names = "cdns3,usb3-phy";
 };
+
+&mcasp1 {
+	status = "okay";
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_mcasp1_pins_default>;
+	op-mode = <0>; /* MCASP_IIS_MODE */
+	tdm-slots = <2>;
+	serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */
+	       1 0 2 0
+	       0 0 0 0
+	       0 0 0 0
+	       0 0 0 0
+	>;
+};