【rk3576 BSP音频开发bug记录】

文章目录

- 根据硬件设计选择合适的板卡
- [音频接口bug （耳机插孔，带插入检测功能）](#音频接口bug （耳机插孔，带插入检测功能）)
- rk3576内核defconfig与.config工作模式

根据硬件设计选择合适的板卡

可以看到我的主设备数来自于rk3576-armsom-sige5.dts

音频接口bug （耳机插孔，带插入检测功能）

设备树如下

c 复制代码

 es8388_sound: es8388-sound {
                status = "okay";
                compatible = "rockchip,multicodecs-card";
                rockchip,card-name = "rockchip-es8388";
                hp-det-gpio = <&gpio1 RK_PD5 GPIO_ACTIVE_LOW>;
                //io-channels = <&saradc 3>;
                ///io-channel-names = "adc-detect";
                //keyup-threshold-microvolt = <1800000>;
                //poll-interval = <100>;
                //spk-con-gpio = <&gpio2 RK_PB1 GPIO_ACTIVE_HIGH>;
                //hp-con-gpio = <&gpio3 RK_PD6 GPIO_ACTIVE_HIGH>;
                //rockchip,pre-power-on-delay-ms = <30>;
                //rockchip,post-power-down-delay-ms = <40>;
                rockchip,format = "i2s";
                rockchip,mclk-fs = <256>;
                rockchip,cpu = <&sai2>;
                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>;
                //play-pause-key {
                //        label = "playpause";
                //        linux,code = <KEY_PLAYPAUSE>;
                //        press-threshold-microvolt = <2000>;
                //};
        };

原来aplay -l查看音频驱动，

c 复制代码

aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: rockchipes8388 [rockchip-es8388], device 0: dailink-multicodecs es8328-hifi-analog-0 [dailink-multicodecs es8328-hifi-analog-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
root@rk3576-buildroot:/#

发现es8388对应了es8328驱动，bug就在这里。

es8388耳机孔原本sdk无驱动，需要自己添加，这里需要alsamixer命令查看音量有没有被静音。如果静音按下键盘M键退出静音模式

c 复制代码

alsamixer

rk3576内核defconfig与.config工作模式

上图所示的两个文件共同作用，生成.config。当然make menuconfig也可以修改.config。

这里得注意kconfig的作用，这是因为rockchip_linux_defconfig的配置，需要在kconfig里面进行一次判断，再传递给.config。如果kconfig里面没有rockchip_linux_defconfig写的的配置，那样也不会传给.config

.config路径如下