Re: [RFC 4/8] clk: qcom: gcc-sm8450: Keep usb30 prim gdsc on during runtime suspend

[Stephen Boyd]

Quoting Krishna Kurapati (2023-10-17 06:19:44)
> When runtime suspend happens in host mode, if cable is removed at this
> instant, it triggers a resume where a xhci register access is done when
> gdsc is not on leading to a crash. Keep usb30 prim gdsc as on during
> runtime suspend to avoid this crash.
> 
> Signed-off-by: Krishna Kurapati <quic_kriskura@xxxxxxxxxxx>
> ---
> Note: I am not sure if this is the right way or setting GDSC flags to
> PWRSTS_RET_ON is the right approach. So for now made this change to

Does using PWRSTS_RET_ON work? Does the GDSC support being turned off or
is the lowest power state retention?