IMX-AUD-IO is a daughter board which can be connected to i.MX95 19x19
EVK through a physical connector. This connector is described as a
fsl,io-connector connector to expose a constrained subset of GPIO and
clock resources to daughter board using fixed electrical wiring.

Also add required regulator, sound CPU DAI and I2C bus configuration to
support IMX-AUD-IO on this base board.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
---
 .../boot/dts/freescale/imx95-19x19-evk.dts    | 53 ++++++++++++++++++-
 1 file changed, 51 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
index 041fd838fabb..f9b53df85396 100644
--- a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
@@ -43,6 +43,17 @@ aliases {
 		serial4 = &lpuart5;
 	};
 
+	aud_io_conn: aud-io-connector {
+		compatible = "fsl,io-connector";
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-map = <0 0 &i2c6_pcal6416 8 1>;
+		gpio-map-mask = <0xff 0x0>;
+		gpio-map-pass-thru = <0x0 0x1>;
+		#clock-cells = <1>;
+		clock-map = <0 &scmi_clk IMX95_CLK_SAI2>;
+	};
+
 	bt_sco_codec: audio-codec-bt-sco {
 		#sound-dai-cells = <1>;
 		compatible = "linux,bt-sco";
@@ -94,7 +105,7 @@ flexcan2_phy: can-phy1 {
 		standby-gpios = <&i2c4_gpio_expander_21 3 GPIO_ACTIVE_LOW>;
 	};
 
-	reg_vref_1v8: regulator-1p8v {
+	aud_io_reg_1v8: reg_vref_1v8: regulator-1p8v {
 		compatible = "regulator-fixed";
 		regulator-max-microvolt = <1800000>;
 		regulator-min-microvolt = <1800000>;
@@ -108,6 +119,22 @@ reg_3p3v: regulator-3p3v {
 		regulator-name = "+V3.3_SW";
 	};
 
+	aud_io_reg_3v3: regulator-aud-io-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "aud-io-3v3";
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		gpio = <&i2c6_pcal6416 11 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	aud_io_reg_5v: regulator-aud-io-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "aud-io-5v";
+		regulator-max-microvolt = <5000000>;
+		regulator-min-microvolt = <5000000>;
+	};
+
 	reg_audio_pwr: regulator-audio-pwr {
 		compatible = "regulator-fixed";
 		regulator-name = "audio-pwr";
@@ -382,7 +409,7 @@ i2c5_pcal6408: gpio@21 {
 	};
 };
 
-&lpi2c6 {
+aud_io_i2c: &lpi2c6 {
 	clock-frequency = <100000>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_lpi2c6>;
@@ -588,6 +615,28 @@ &sai1 {
 	status = "okay";
 };
 
+aud_io_cpu: &sai2 {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai2>;
+	clocks = <&scmi_clk IMX95_CLK_BUSNETCMIX>, <&dummy>,
+		 <&scmi_clk IMX95_CLK_SAI2>, <&dummy>,
+		 <&dummy>, <&scmi_clk IMX95_CLK_AUDIOPLL1>,
+		 <&scmi_clk IMX95_CLK_AUDIOPLL2>;
+	clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k", "pll11k";
+	assigned-clocks = <&scmi_clk IMX95_CLK_AUDIOPLL1_VCO>,
+			  <&scmi_clk IMX95_CLK_AUDIOPLL2_VCO>,
+			  <&scmi_clk IMX95_CLK_AUDIOPLL1>,
+			  <&scmi_clk IMX95_CLK_AUDIOPLL2>,
+			  <&scmi_clk IMX95_CLK_SAI2>;
+	assigned-clock-parents = <0>, <0>, <0>, <0>,
+				 <&scmi_clk IMX95_CLK_AUDIOPLL1>;
+	assigned-clock-rates = <3932160000>, <3612672000>,
+			       <393216000>, <361267200>, <12288000>;
+	fsl,sai-mclk-direction-output;
+	fsl,sai-asynchronous;
+};
+
 &sai3 {
 	#sound-dai-cells = <0>;
 	pinctrl-names = "default";
-- 
2.50.1