We have been experiencing a problem for some time now with the use of Raspberry Pi under kernel 5.15. The Hifiberry DAC+ADC HW 1.2 boards (which we bought in bulk last year) are recognized on their first use. However, sometimes after a reboot of the Raspberry Pi, the Hifiberry is no longer recognized by the system.
We have correctly made the necessary modifications in the configuration file (/boot/config.txt) following these instructions: https://www.hifiberry.com/docs/software/configuring-linux-3-18-x/
When the Hifiberry is not recognized, we encounter this error during boot:
[ 9.737883] pcm512x 1-004d: Failed to reset device: -121
When the error appears for a card, it is no longer recognized by the Raspberry Pi, regardless of the kernel (4.x, 5.x, 6.1).
This problem never happen (yet) with lower version of kernel (4.x).
Is there any other way to test/reset the Hifiberry board, which is, nevertheless, receiving power correctly?
Could-it be an EEPROM error?
Thank you for your assistance.