On Thu, Sep 15, 2022 at 06:59:36PM +0530, Rajendra Nayak wrote: > > On 9/15/2022 12:55 PM, Rajendra Nayak wrote: > > > > > > On 9/15/2022 2:53 AM, Matthias Kaehlcke wrote: > > > On Wed, Sep 14, 2022 at 09:12:36AM +0200, Johan Hovold wrote: > > > > On Thu, Sep 01, 2022 at 09:04:55AM -0700, Matthias Kaehlcke wrote: > > > > > On Thu, Sep 01, 2022 at 03:47:56PM +0530, Rajendra Nayak wrote: > > > > > > USB on sc7280 cannot support wakeups from low power states > > > > > > if the GDSC is turned OFF. Update the .pwrsts for usb GDSC so it > > > > > > only transitions to RET in low power. > > > > > > > > > > > > Signed-off-by: Rajendra Nayak <quic_rjendra@xxxxxxxxxxx> > > > > > > > > > > Reviewed-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> > > > > > Tested-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> > > > > > > > > Did you confirm that you actually hit the retention state? > > > > > > No, how would I do that? > > > > > > > IIUC, this series is equivalent to using ALWAYS_ON unless CX is actually > > > > powered off during suspend. > > > > > > The count in /sys/kernel/debug/qcom_stats/cxsd increses with each suspend, > > > however it also does that with the GDSC configured as ALWAYS_ON and with > > > Rajendra's "arm64: dts: qcom: sc7280: Add required-opps for USB" [1], so > > > > hmm, that's really not expected. With my above patch and with the GDSC as > > ALWAYS_ON there is a cx vote in suspend preventing cxsd so the counter > > should not go up. > > Perhaps you are missing '1b771839: clk: qcom: gdsc: enable optional power domain support' > in your tree? Indeed, that patch was missing in our tree, thanks for the pointer! With it the CXSD count does not increase when the GDSC is configured as ALWAYS_ON.
