Hi Artur, On Fri, Apr 12, 2019 at 01:38:56PM +0000, Artur Petrosyan wrote: > In host mode port power must be turned on when wakeup > detected or session request interrupt is detected. > Because, otherwise core wouldn't exit form partial > power down. > > - Turned on the port power by setting HPRT0_PWR bit. > > - Called dwc2_hcd_connect() function after enabling > the power of the port. > > Signed-off-by: Artur Petrosyan <[email protected]> > --- > drivers/usb/dwc2/core_intr.c | 24 +++++++++++++++++++++--- > 1 file changed, 21 insertions(+), 3 deletions(-) > > diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c > index 19ae2595f1c3..ce523fd2b1b4 100644 > --- a/drivers/usb/dwc2/core_intr.c > +++ b/drivers/usb/dwc2/core_intr.c > @@ -312,6 +312,7 @@ static void dwc2_handle_conn_id_status_change_intr(struct > dwc2_hsotg *hsotg) > static void dwc2_handle_session_req_intr(struct dwc2_hsotg *hsotg) > { > int ret; > + u32 hprt0; > > /* Clear interrupt */ > dwc2_writel(hsotg, GINTSTS_SESSREQINT, GINTSTS); > @@ -320,7 +321,8 @@ static void dwc2_handle_session_req_intr(struct > dwc2_hsotg *hsotg) > hsotg->lx_state); > > if (dwc2_is_device_mode(hsotg)) { > - if (hsotg->lx_state == DWC2_L2) { > + if (hsotg->lx_state == DWC2_L2 && > + hsotg->params.power_down == 1) { I think you can replace 1 with DWC2_POWER_DOWN_PARAM_PARTIAL.
[snip] --- Best, Jules
