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,name = "imx8mm-nau8822"; 15 simple-audio-card,routing = 16 "Headphones", "LHP", 17 "Headphones", "RHP", 18 "Speaker", "LSPK", 19 "Speaker", "RSPK", 20 "Line Out", "AUXOUT1", 21 "Line Out", "AUXOUT2", 22 "LAUX", "Line In", 23 "RAUX", "Line In", 24 "LMICP", "Mic In", 25 "RMICP", "Mic In"; 26 simple-audio-card,widgets = 27 "Headphones", "Headphones", 28 "Line Out", "Line Out", 29 "Speaker", "Speaker", 30 "Microphone", "Mic In", 31 "Line", "Line In"; 32 33 dailink_master: simple-audio-card,codec { 34 clocks = <&clk IMX8MM_CLK_SAI2_ROOT>; 35 sound-dai = <&nau8822_1a>; 36 }; 37 38 simple-audio-card,cpu { 39 sound-dai = <&sai2>; 40 }; 41 }; 42}; 43 44&gpio_expander_21 { 45 status = "okay"; 46}; 47 48/* Verdin I2C_1 */ 49&i2c4 { 50 /* Audio Codec */ 51 nau8822_1a: audio-codec@1a { 52 compatible = "nuvoton,nau8822"; 53 reg = <0x1a>; 54 }; 55}; 56 57/* Verdin UART_1, connector X50 through RS485 transceiver */ 58&uart2 { 59 linux,rs485-enabled-at-boot-time; 60 rs485-rts-active-low; 61 rs485-rx-during-tx; 62}; 63 64/* Limit frequency on dev board due to long traces and bad signal integrity */ 65&usdhc2 { 66 max-frequency = <100000000>; 67}; 68