We are working in a custom board with imx7d processor. In that we have implemented LPSR mode. Normally the board can enter LPSR mode and wake up using GPIO pin. But when a USB device is connected to the board, it enters deep sleep mode(Suspend to RAM) instead of LPSR mode. Also In mx7d-sabresd we got the same result.
Why the processor cannot enter LPSR mode when USB device is connected ?
Has anyone faced issues like this ?
Please help us to resolve this issue.
Thanks in advance,