I tested the audio on the ls1028ardb reference board. I tested it with reference to chapter 7.2.13 of LSDKUG_Rev20.12 and found that there was no audio output.
I found that the sai of ls1028 and imx8mq-evk use the same driver, so I found imx8mq for a comparison test. After comparing and testing with imx8mq-evk, and then tracking the code, it is found that the following functions cannot be entered in fsl-sai.c
1.In fsl_sai_check_ver functions ,execute the following code and return directly.
if (FSL_SAI_TCSR(offset) == FSL_SAI_VERID)
return 0;
2.In fsl_sai_hw_params functions ,cannot enter the following if judgment。
if (!sai->slave_mode[tx]) {
ret = fsl_sai_set_bclk(cpu_dai, tx, bclk);
if (ret)
return ret;
The above two pieces of code can run successfully on the imx8mq-evk board.
