rk3588调试es8388语音编解码IC小结

本次调试es8388语音编解码IC，按照以下思路（如果出现内核崩溃的问题，建议可以同步下rk原厂代码）：

1、dts的配置

c 复制代码

  &i2c7 {  //i2c总线确认
      status = "okay";
      pinctrl-names = "default";
      pinctrl-0 = <&i2c7m0_xfer>;  //总线IO要配置对
 
           es8388: es8388@11 {
                   status = "okay";
                   #sound-dai-cells = <0>;
                   compatible = "everest,es8388", "everest,es8323";
                   reg = <0x11>;
                   clocks = <&cru I2S0_8CH_MCLKOUT>;
                   clock-names = "mclk";
  //               sda-gpios = <&gpio1 RK_PD1 GPIO_ACTIVE_HIGH>;
  //               scl-gpios = <&gpio1 RK_PD0 GPIO_ACTIVE_HIGH>;
                   assigned-clocks = <&cru I2S0_8CH_MCLKOUT>;
                   assigned-clock-rates = <12288000>;
                   pinctrl-names = "default";
                   pinctrl-0 = <&i2s0_mclk>;
           };
 };

c 复制代码

es8388_sound: es8388-sound {
  status = "okay";
  compatible = "rockchip,multicodecs-card";
  rockchip,card-name = "rockchip,es8388";
  hp-det-gpio = <&gpio1 2 1>;
  spk-con-gpio = <&gpio1 3 0>;
  hp-con-gpio = <&gpio0 8 0>;
  rockchip,format = "i2s";
  rockchip,mclk-fs = <256>;
  rockchip,cpu = <&i2s0_8ch>;
  rockchip,codec = <&es8388>;
  rockchip,audio-routing =
    "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>;
 };

c 复制代码

 &i2s0_8ch {  
         status = "okay";
         pinctrl-0 = <&i2s0_lrck  //I2S0的pin的配置，注意使用哪个就添加哪个，注意IO不要跟其他配置冲突
                      &i2s0_sclk
                      &i2s0_sdi0
                      &i2s0_sdo0>;
};

2 确认i2s0打开，对应的GPIO没有复用，可以通过以下命令确认（硬件原理方面对应原理图确认）：

bash 复制代码

cat /sys/kernel/debug/pinctrl/pinctrl-rockchip-pinctrl/pinmux-pins
cat /sys/kernel/debug/gpio 
以及查找dts编译后的文件确认：.rk3588-evb3-lp5-v10-linux.dtb.dts.tmp

3、验证过程：

查看声卡设备：

root@VC-RK3588:/# cat /proc/asound/cards

0 [rockchipes8388 ]: rockchip_es8388 - rockchip,es8388

rockchip,es8388

root@VC-RK3588:/#

1、安装工具

① apt-get update

② apt install ffmpeg

③ apt install alsa-utils

ffmpeg -f alsa -i hw:0,0 out.wav //录音

aplay -D hw:0,0 out.wav //放音

如果播放单声道音频文件（mono）要加plug：

aplay -D plughw:0,0 zangyuquli.wav

hw:0,0 声卡0和设备0的确定，使用 aplay -l 查看：

root@VC-RK3588:/# aplay -l

**** List of PLAYBACK Hardware Devices ****

card 0: rockchipes8388 [rockchip,es8388], device 0: dailink-multicodecs ES8323.7-0011-0 [dailink-multicodecs ES8323.7-0011-0]

Subdevices: 1/1

Subdevice #0: subdevice #0

从上面可以看出我的audio设备是：

card 0: rockchipes8388 [rockchip,es8388], device 0: dailink-multicodecs ES8323.7-0011-0 [dailink-multicodecs ES8323.7-0011-0]

Subdevices: 1/1

Subdevice #0: subdevice #0

声卡id为0（因为是card 0），设备id为0（device 0），所以aplay -D plughw:0,0 xxx.wav 即可。