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器件型号：TAS2505 工具与软件：
尊敬的 TI：
当我使用"Aplay"命令进行音频驱动程序测试时、将报告以下错误：
root@tiny:~# aplay sample-3s.wav Playing WAVE 'sample-3s.wav' : [ 25.317396] tas2505-codec 2-0018: tas2505_hw_params: bit width = 16 Signed 16 bit Little Endian, Rate 44100 Hz, Stereo [ 25.347392] davinci-mcasp 2b10000.audio-controller: Sample-rate is off by 400 PPM [ 25.357478] tas2505-codec 2-0018: tas2505_set_bias_level:power on aplay: pcm_write:2146: write error: Input/output error [ 45.737567] tas2505-codec 2-0018: tas2505_set_bias_level:SND_SOC_BIAS_STANDBY [ 45.747864] tas2505-codec 2-0018: tas2505_set_bias_level:power off root@tiny:~#
tas2505的驱动程序来自以下链接： https://git.ti.com/cgit/lpaa-android-drivers/tas2505-linux-driver/ 、设备树配置也基于此链接进行配置。 但是 "CLK_McASP" 具有一个实例 "启用 GPIO" 节点、因此未对其进行配置。
/{
clk_mcasp1_fixed: clk_mcasp1_fixed {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <24576000>;
};
clk_mcasp1: clk_mcasp1 {
#clock-cells = <0>;
compatible = "gpio-gate-clock";
clocks = <&clk_mcasp1_fixed>;
//enable-gpios = <&gpio1 27 0>; /* BeagleBone Black Clk enable on GPIO1_27 */
};
codec_audio: sound {
compatible = "simple-audio-card";
simple-audio-card,name = "AM62x-SKEVM";
simple-audio-card,dai-link@0 {
format = "i2s";
bitclock-master = <&sound0_master>;
frame-master = <&sound0_master>;
sound0_master: cpu {
sound-dai = <&mcasp1>;
clocks = <&clk_mcasp1>;
};
codec {
sound-dai = <&tas2505>;
};
};
};
};
由于 'enable-gopios' 未配置节点、引导日志将出现以下错误：
[ 0.813168] clk_mcasp1: gpio_clk_driver_probe: Can't get 'enable' named GPIO property [ 0.821220] gpio-clk: probe of clk_mcasp1 failed with error -2
我想问的是、出现错误消息的原因是什么 "播放：PCM_WRITE：2146：写入错误：输入/输出错误" ？ 与节点有关 'ENABLE-GPIOs' 未配置？ 如果相关、您能告诉我如何配置 'enable-gopios' 节点？
声卡信息和设备节点信息如下：
root@tiny:~# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: AM62xSKEVM [AM62x-SKEVM], device 0: davinci-mcasp.0-tas2505-hifi tas2505-hifi-0 [davinci-mcasp.0-tas2505-hifi tas2505-hifi-0]
Subdevices: 1/1
Subdevice #0: subdevice #0
root@tiny:~# cat /proc/asound/
AM62xSKEVM/ card0/ cards devices pcm timers version
root@tiny:~# cat /proc/asound/cards
0 [AM62xSKEVM ]: simple-card - AM62x-SKEVM
AM62x-SKEVM
root@tiny:~# ls /dev/snd/
controlC0 pcmC0D0p timer
root@tiny:~#
