[PATCH 12/13] arm64: dts: freescale: imx93-phyboard-segin: Add I2S audio

Primoz Fiser
2025-04-10T09:03:17Z

Add support for I2S audio found on phyBOARD-Segin-i.MX93. Audio codec
TLV320AIC3007 is connected to SAI1 interface as a DAI master. MCLK is
provided from the SAI's internal audio PLL (19.2 MHz).

Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
---
.../dts/freescale/imx93-phyboard-segin.dts | 75 +++++++++++++++++++
1 file changed, 75 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts b/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
index faad3c3e627c..08574b146400 100644
--- a/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-phyboard-segin.dts
@@ -37,6 +37,20 @@ reg_flexcan1_en: regulator-flexcan1-en {
regulator-name = "CAN1_EN";
};

+ reg_sound_1v8: regulator-sound-1v8 {
+ compatible = "regulator-fixed";
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microvolt = <1800000>;
+ regulator-name = "VCC1V8_AUDIO";
+ };
+
+ reg_sound_3v3: regulator-sound-3v3 {
+ compatible = "regulator-fixed";
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ regulator-name = "VCC3V3_ANALOG";
+ };
+
reg_usdhc2_vmmc: regulator-usdhc2 {
compatible = "regulator-fixed";
enable-active-high;
@@ -47,6 +61,34 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
regulator-max-microvolt = <3300000>;
regulator-name = "VCC_SD";
};
+
+ sound: sound {
+ compatible = "simple-audio-card";
+ simple-audio-card,name = "phyBOARD-Segin-TLV320AIC3007";
+ simple-audio-card,format = "i2s";
+ simple-audio-card,bitclock-master = <&dailink_master>;
+ simple-audio-card,frame-master = <&dailink_master>;
+ simple-audio-card,widgets =
+ "Line", "Line In",
+ "Line", "Line Out",
+ "Speaker", "Speaker";
+ simple-audio-card,routing =
+ "Line Out", "LLOUT",
+ "Line Out", "RLOUT",
+ "Speaker", "SPOP",
+ "Speaker", "SPOM",
+ "LINE1L", "Line In",
+ "LINE1R", "Line In";
+
+ simple-audio-card,cpu {
+ sound-dai = <&sai1>;
+ };
+
+ dailink_master: simple-audio-card,codec {
+ sound-dai = <&audio_codec>;
+ clocks = <&clk IMX93_CLK_SAI1>;
+ };
+ };
};

/* CAN */
@@ -64,6 +106,18 @@ &lpi2c2 {
pinctrl-0 = <&pinctrl_lpi2c2>;
status = "okay";

+ /* Codec */
+ audio_codec: audio-codec@18 {
+ compatible = "ti,tlv320aic3007";
+ reg = <0x18>;
+ #sound-dai-cells = <0>;
+
+ AVDD-supply = <&reg_sound_3v3>;
+ IOVDD-supply = <&reg_sound_3v3>;
+ DRVDD-supply = <&reg_sound_3v3>;
+ DVDD-supply = <&reg_sound_1v8>;
+ };
+
/* RTC */
i2c_rtc: rtc@68 {
compatible = "microcrystal,rv4162";
@@ -82,6 +136,17 @@ &lpuart1 {
status = "okay";
};

+/* Audio */
+&sai1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_sai1>;
+ assigned-clocks = <&clk IMX93_CLK_SAI1>;
+ assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
+ assigned-clock-rates = <19200000>;
+ fsl,sai-mclk-direction-output;
+ status = "okay";
+};
+
/* USB */
&usbotg1 {
disable-over-current;
@@ -150,6 +215,16 @@ MX93_PAD_ENET2_RD2__GPIO4_IO26 0x31e
>;
};

+ pinctrl_sai1: sai1grp {
+ fsl,pins = <
+ MX93_PAD_UART2_RXD__SAI1_MCLK 0x1202
+ MX93_PAD_SAI1_TXFS__SAI1_TX_SYNC 0x1202
+ MX93_PAD_SAI1_TXC__SAI1_TX_BCLK 0x1202
+ MX93_PAD_SAI1_TXD0__SAI1_TX_DATA00 0x1402
+ MX93_PAD_SAI1_RXD0__SAI1_RX_DATA00 0x1402
+ >;
+ };
+
pinctrl_usdhc2_cd: usdhc2cdgrp {
fsl,pins = <
MX93_PAD_SD2_CD_B__GPIO3_IO00 0x31e
--
2.34.1