arch/arm64/boot/dts/freescale/imx8mm-verdin-dev.dtsi

   1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
   2 /*
   3  * Copyright 2022 Toradex
   4  */
   5
   6 #include "imx8mm-verdin-dahlia.dtsi"
   7
   8 / {
   9         sound_card: sound-card {
  10                 compatible = "simple-audio-card";
  11                 simple-audio-card,bitclock-master = <&dailink_master>;
  12                 simple-audio-card,format = "i2s";
  13                 simple-audio-card,frame-master = <&dailink_master>;
  14                 simple-audio-card,mclk-fs = <256>;
  15                 simple-audio-card,name = "imx8mm-nau8822";
  16                 simple-audio-card,routing =
  17                         "Headphones", "LHP",
  18                         "Headphones", "RHP",
  19                         "Speaker", "LSPK",
  20                         "Speaker", "RSPK",
  21                         "Line Out", "AUXOUT1",
  22                         "Line Out", "AUXOUT2",
  23                         "LAUX", "Line In",
  24                         "RAUX", "Line In",
  25                         "LMICP", "Mic In",
  26                         "RMICP", "Mic In";
  27                 simple-audio-card,widgets =
  28                         "Headphones", "Headphones",
  29                         "Line Out", "Line Out",
  30                         "Speaker", "Speaker",
  31                         "Microphone", "Mic In",
  32                         "Line", "Line In";
  33
  34                 dailink_master: simple-audio-card,codec {
  35                         clocks = <&clk IMX8MM_CLK_SAI2_ROOT>;
  36                         sound-dai = <&nau8822_1a>;
  37                 };
  38
  39                 simple-audio-card,cpu {
  40                         sound-dai = <&sai2>;
  41                 };
  42         };
  43 };
  44
  45 &gpio_expander_21 {
  46         status = "okay";
  47 };
  48
  49 /* Verdin I2C_1 */
  50 &i2c4 {
  51         /* Audio Codec */
  52         nau8822_1a: audio-codec@1a {
  53                 compatible = "nuvoton,nau8822";
  54                 reg = <0x1a>;
  55         };
  56 };
  57
  58 /* Verdin UART_1, connector X50 through RS485 transceiver */
  59 &uart2 {
  60         linux,rs485-enabled-at-boot-time;
  61         rs485-rts-active-low;
  62         rs485-rx-during-tx;
  63 };
  64
  65 /* Limit frequency on dev board due to long traces and bad signal integrity */
  66 &usdhc2 {
  67         max-frequency = <100000000>;
  68 };