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iMX7 cannot enter LPSR mode when USB is connected

Question asked by Senthilkumar Chandran on Apr 18, 2018
Latest reply on Apr 20, 2018 by igorpadykov


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,