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

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

[Jayesh Choudhary]

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.
- Add syscon node for audio_refclk1 to set the enable bit in
  CTRL_MMR reg and select the parent clock for the external clock.

[0]: <https://www.ti.com/lit/gpn/TLV320AIC3106>

Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
---

This patch depends upon the bcdma driver fix posted upstream:
<https://lore.kernel.org/all/20240607-bcdma_chan_cnt-v2-1-bf1a55529d91@ti.com/>

 arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 121 ++++++++++++++++++++++++
 1 file changed, 121 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
index bf3c246d13d1..c040dcdebf88 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
@@ -105,6 +105,16 @@ vdd_sd_dv: regulator-TLV71033 {
 			 <3300000 0x1>;
 	};
 
+	vcc_3v3_aud: regulator-vcc3v3 {
+		/* Output of LM5140 */
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_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";
@@ -122,6 +132,35 @@ 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 {
@@ -202,6 +241,21 @@ J722S_IOPAD(0x0130, PIN_OUTPUT, 0) /* (AG26) RGMII1_TXC */
 			J722S_IOPAD(0x012c, PIN_OUTPUT, 0) /* (AF25) RGMII1_TX_CTL */
 		>;
 	};
+
+	main_mcasp1_pins_default: main-mcasp1-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x0090, PIN_INPUT, 2) /* (U24) GPMC0_BE0n_CLE.MCASP1_ACLKX */
+			J722S_IOPAD(0x0098, PIN_INPUT, 2) /* (AA24) GPMC0_WAIT0.MCASP1_AFSX */
+			J722S_IOPAD(0x008c, PIN_OUTPUT, 2) /* (T25) GPMC0_WEn.MCASP1_AXR0 */
+			J722S_IOPAD(0x0084, PIN_INPUT, 2) /* (R25) GPMC0_ADVn_ALE.MCASP1_AXR2 */
+		>;
+	};
+
+	audio_ext_refclk1_pins_default: audi-ext-refclk1-pins-default {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x0a0, PIN_OUTPUT, 1) /* (N24) GPMC0_WPn.AUDIO_EXT_REFCLK1 */
+		>;
+	};
 };
 
 &cpsw3g {
@@ -277,6 +331,12 @@ &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>;
@@ -301,6 +361,41 @@ exp1: gpio@23 {
 				  "PCIe0_1L_RC_RSTz", "PCIe0_1L_PRSNT#",
 				  "ENET1_EXP_SPARE2", "ENET1_EXP_PWRDN",
 				  "PD_I2ENET1_I2CMUX_SELC_IRQ", "ENET1_EXP_RESETZ";
+
+		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 = <&vcc_3v3_aud>;
+		IOVDD-supply = <&vcc_3v3_aud>;
+		DRVDD-supply = <&vcc_3v3_aud>;
+		DVDD-supply = <&vsys_io_1v8>;
 	};
 };
 
@@ -384,3 +479,29 @@ &sdhci1 {
 	status = "okay";
 	bootph-all;
 };
+
+&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
+	>;
+};
+
+&main_conf {
+	audio_refclk1: clock@82e4 {
+		compatible = "ti,am62-audio-refclk";
+		reg = <0x82e4 0x4>;
+		clocks = <&k3_clks 157 18>;
+		assigned-clocks = <&k3_clks 157 18>;
+		assigned-clock-parents = <&k3_clks 157 33>;
+		#clock-cells = <0>;
+	};
+};
-- 
2.25.1

Re: [PATCH] arm64: dts: ti: k3-j722s-evm: Enable analog audio support

[Rob Herring (Arm)]

On Tue, 11 Jun 2024 13:58:19 +0530, Jayesh Choudhary wrote:
> 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.
> - Add syscon node for audio_refclk1 to set the enable bit in
>   CTRL_MMR reg and select the parent clock for the external clock.
> 
> [0]: <https://www.ti.com/lit/gpn/TLV320AIC3106>
> 
> Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
> ---
> 
> This patch depends upon the bcdma driver fix posted upstream:
> <https://lore.kernel.org/all/20240607-bcdma_chan_cnt-v2-1-bf1a55529d91@ti.com/>
> 
>  arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 121 ++++++++++++++++++++++++
>  1 file changed, 121 insertions(+)
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


New warnings running 'make CHECK_DTBS=y ti/k3-j722s-evm.dtb' for 20240611082820.17442-1-j-choudhary@ti.com:

arch/arm64/boot/dts/ti/k3-j722s-evm.dtb: pinctrl@f4000: 'audi-ext-refclk1-pins-default' does not match any of the regexes: '-pins(-[0-9]+)?$|-pin$', 'pinctrl-[0-9]+'
	from schema $id: http://devicetree.org/schemas/pinctrl/pinctrl-single.yaml#