Encrypted flash write operation sometimes result in random corruption in
certain bytes. Root cause points to sudden current surge due to involvement of
encryption block overwhelming LDO supply. More details will be provided
in the ESP32-C5 SoC Errata document.
This fix limits the CPU clock to 160MHz for flash encryption enabled
case. Failing encrypted flash write tests could successfully pass in
this configuration. Going ahead, a dynamic clock adjustment in flash
driver will be considered to mitigate this issue.
Mahavir Jain
3fd00b4d80