dts: mimxrt685_evk/mimxrt685s/hifi4: Enable devs for audio

Instantiate, configure and enable Flexcomm zephyrproject-rtos#1, Flexcomm zephyrproject-rtos#3, DMA, I3C for
audio capture and playback on mimxrt685_evk's HiFi 4 DSP domain. Add
pinmux definitions for those.

Signed-off-by: Vit Stanicek <[email protected]>

boards/nxp/mimxrt685_evk/mimxrt685_evk_mimxrt685s_hifi4.dts

@@ -69,12 +69,60 @@
  drive-strength = "normal";
  };
  };
+
+ pinmux_flexcomm1_i2s: pinmux_flexcomm1_i2s {
+ group0 {
+ pinmux = <FC1_RXD_SDA_MOSI_DATA_PIO0_9>;
+ input-enable;
+ slew-rate = "normal";
+ drive-strength = "high";
+ };
+ };
+
+ pinmux_flexcomm3_i2s: pinmux_flexcomm3_i2s {
+ group0 {
+ pinmux = <FC3_RXD_SDA_MOSI_DATA_PIO0_23>,
+ <FC3_TXD_SCL_MISO_WS_PIO0_22>,
+ <FC3_SCK_PIO0_21>;
+ input-enable;
+ slew-rate = "normal";
+ drive-strength = "high";
+ };
+ };
+
+ pinmux_codec: pinmux_codec {
+ group0 {
+ pinmux = <MCLK_PIO1_10>;
+ slew-rate = "normal";
+ drive-strength = "high";
+ };
+ };
+
+ pinmux_i3c: pinmux_i3c {
+ group0 {
+ pinmux = <I3C0_SCL_PIO2_29>,
+ <I3C0_SDA_PIO2_30>;
+ input-enable;
+ slew-rate = "slow";
+ drive-strength = "high";
+ };
+
+ group1 {
+ pinmux = <I3C0_PUR_PIO2_31>;
+ slew-rate = "normal";
+ drive-strength = "normal";
+ };
+ };
 };
 
 &gpio0 {
  status = "okay";
 };
 
+&dma1 {
+ status = "okay";
+};
+
 &flexcomm0 {
  compatible = "nxp,lpc-usart";
  pinctrl-0 = <&pinmux_flexcomm0_usart>;
@@ -86,3 +134,40 @@
 &mbox {
  status = "okay";
 };
+/* I2S receive channel */
+i2s0: &flexcomm1 {
+ status = "okay";
+ compatible = "nxp,lpc-i2s";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ dmas = <&dma1 2>;
+ dma-names = "rx";
+ pinctrl-0 = <&pinmux_flexcomm1_i2s>;
+ pinctrl-names = "default";
+};
+
+/* I2S transmit channel */
+i2s1: &flexcomm3 {
+ status = "okay";
+ compatible = "nxp,lpc-i2s";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ dmas = <&dma1 7>;
+ dma-names = "tx";
+ pinctrl-0 = <&pinmux_flexcomm3_i2s>;
+ pinctrl-names = "default";
+};
+
+&i3c0 {
+ status = "okay";
+ pinctrl-0 = <&pinmux_i3c>;
+ pinctrl-names = "default";
+
+ audio_codec: wm8904@1a {
+ pinctrl-0 = <&pinmux_codec>;
+ pinctrl-names = "default";
+ compatible = "wolfson,wm8904";
+ reg = <0x1a 0 0>;
+ clock-source = "MCLK";
+ };
+};