Rockchip RK3588 kernel dts解析之音频模块

RK3588 EVB板子使用的是外接声卡ES8388

DTS配置参考：rk3588-evb1-lp4.dtsi

系统声音配置：

es8388_sound: es8388-sound {status = "okay";compatible = "rockchip,multicodecs-card";rockchip,card-name = "rockchip-es8388";hp-det-gpio = <&gpio1 RK_PD5 GPIO_ACTIVE_LOW>;  //耳机检测脚io-channels = <&saradc 3>;  //耳机adc检测通道io-channel-names = "adc-detect";keyup-threshold-microvolt = <1800000>; //耳机检测参考电压poll-interval = <100>;spk-con-gpio = <&gpio1 RK_PD3 GPIO_ACTIVE_HIGH>; //喇叭控制GPIOhp-con-gpio = <&gpio1 RK_PD2 GPIO_ACTIVE_HIGH>; //耳机控制GPIOrockchip,format = "i2s";rockchip,mclk-fs = <256>;rockchip,cpu = <&i2s0_8ch>;  //与RK3588进行数据通信的i2s通道rockchip,codec = <&es8388>;rockchip,audio-routing =        //配置声音通路"Headphone", "LOUT1","Headphone", "ROUT1","Speaker", "LOUT2","Speaker", "ROUT2","Headphone", "Headphone Power","Headphone", "Headphone Power","Speaker", "Speaker Power","Speaker", "Speaker Power","LINPUT1", "Main Mic","LINPUT2", "Main Mic","RINPUT1", "Headset Mic","RINPUT2", "Headset Mic";pinctrl-names = "default";pinctrl-0 = <&hp_det>;play-pause-key {    //配置耳机按键label = "playpause";linux,code = <KEY_PLAYPAUSE>;press-threshold-microvolt = <2000>;};};

配置I2S0

&i2s0_8ch {status = "okay";pinctrl-0 = <&i2s0_lrck&i2s0_sclk&i2s0_sdi0&i2s0_sdo0>;
};

ES8388设备驱动配置

&i2c7 { //ES8388挂在i2c7上面status = "okay";es8388: es8388@11 {status = "okay";#sound-dai-cells = <0>;compatible = "everest,es8388", "everest,es8323";reg = <0x11>;clocks = <&cru I2S0_8CH_MCLKOUT>;clock-names = "mclk";assigned-clocks = <&cru I2S0_8CH_MCLKOUT>;assigned-clock-rates = <12288000>;pinctrl-names = "default";pinctrl-0 = <&i2s0_mclk>;};
};

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