IMX7ULP + dig mic
1) Is there a way to capture audio data using DMA over I2S interface? if yes, how much max audio data(at 16k sample rate) can be captured?
2) Is there a way to access I2S interface from Cortex A7 processor?
Looking forward to a helpful response. It would be great if someone can provide sample applications for audio capturing on IMX7ULP either on M4/A7.
Thanks in advance
1) yes, refer to the schematic, imx7ulp uses wm8960, refer to the driver of wm8960, which can support up to SNDRV_PCM_FORMAT_S24_LE
2） one can set in dts file
for more detailed information, pls refer to the enclose file, focus on the Chapter 7 Audio