| Message ID | 1638339338-6731-2-git-send-email-quic_c_sanm@quicinc.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v3] usb: host: xhci-plat: Set XHCI_SKIP_PHY_INIT quirk for DWC3 controller | expand |
On Wed, Dec 01, 2021 at 11:45:38AM +0530, Sandeep Maheswaram wrote: > Set XHCI_SKIP_PHY_INIT quirk to avoid phy initialization twice. > Runtime suspend of phy drivers was failing from DWC3 driver as > runtime usage value is 2 because the phy is initialized from > DWC3 core and HCD core. > DWC3 manages phy in their core drivers. > Set this quirk to avoid phy initialization in HCD core. > > Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com> > --- > drivers/usb/host/xhci-plat.c | 3 +++ > 1 file changed, 3 insertions(+) What changed from previous versions of this patch? That goes below the --- line always, right? Please fix up and send a v4. thanks, greg k-h
On 12/2/2021 8:47 AM, Stephen Boyd wrote: > Quoting Sandeep Maheswaram (2021-11-30 22:15:38) >> Set XHCI_SKIP_PHY_INIT quirk to avoid phy initialization twice. >> Runtime suspend of phy drivers was failing from DWC3 driver as >> runtime usage value is 2 because the phy is initialized from >> DWC3 core and HCD core. >> DWC3 manages phy in their core drivers. > This looks wrapped weirdly. > >> Set this quirk to avoid phy initialization in HCD core. >> >> Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com> > Any Fixes tag? Not sure about the commit id to be used here. > >> --- >> drivers/usb/host/xhci-plat.c | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c >> index c1edcc9..9bbd939 100644 >> --- a/drivers/usb/host/xhci-plat.c >> +++ b/drivers/usb/host/xhci-plat.c >> @@ -327,6 +327,9 @@ static int xhci_plat_probe(struct platform_device *pdev) >> &xhci->imod_interval); >> } >> >> + if (of_device_is_compatible(pdev->dev.parent->of_node, "snps,dwc3")) > Are we sure that pdev->dev.parent isn't NULL here? + if (of_device_is_compatible(to_of_node(sysdev->fwnode), "snps,dwc3")) Will this be ok ? > >> + xhci->quirks |= XHCI_SKIP_PHY_INIT; >> + >> hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0); >> if (IS_ERR(hcd->usb_phy)) {
Quoting Sandeep Maheswaram (2021-12-13 20:47:48) > > On 12/2/2021 8:47 AM, Stephen Boyd wrote: > > Quoting Sandeep Maheswaram (2021-11-30 22:15:38) > >> Set XHCI_SKIP_PHY_INIT quirk to avoid phy initialization twice. > >> Runtime suspend of phy drivers was failing from DWC3 driver as > >> runtime usage value is 2 because the phy is initialized from > >> DWC3 core and HCD core. > >> DWC3 manages phy in their core drivers. > > This looks wrapped weirdly. > > > >> Set this quirk to avoid phy initialization in HCD core. > >> > >> Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com> > > Any Fixes tag? > Not sure about the commit id to be used here. Maybe whenever the phy started being initialized twice? > > > >> --- > >> drivers/usb/host/xhci-plat.c | 3 +++ > >> 1 file changed, 3 insertions(+) > >> > >> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c > >> index c1edcc9..9bbd939 100644 > >> --- a/drivers/usb/host/xhci-plat.c > >> +++ b/drivers/usb/host/xhci-plat.c > >> @@ -327,6 +327,9 @@ static int xhci_plat_probe(struct platform_device *pdev) > >> &xhci->imod_interval); > >> } > >> > >> + if (of_device_is_compatible(pdev->dev.parent->of_node, "snps,dwc3")) > > Are we sure that pdev->dev.parent isn't NULL here? > > + if (of_device_is_compatible(to_of_node(sysdev->fwnode), "snps,dwc3")) > > Will this be ok ? Probably? But I see this function already uses 'sysdev->of_node' so that's probably all that's necessary assuming sysdev == pdev->dev.parent in this case. if (of_device_is_compatible(sysdev->of_node, "snps,dwc3")) > > > > >> + xhci->quirks |= XHCI_SKIP_PHY_INIT; > >> + > >> hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0); > >> if (IS_ERR(hcd->usb_phy)) {
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index c1edcc9..9bbd939 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -327,6 +327,9 @@ static int xhci_plat_probe(struct platform_device *pdev) &xhci->imod_interval); } + if (of_device_is_compatible(pdev->dev.parent->of_node, "snps,dwc3")) + xhci->quirks |= XHCI_SKIP_PHY_INIT; + hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0); if (IS_ERR(hcd->usb_phy)) { ret = PTR_ERR(hcd->usb_phy);
Set XHCI_SKIP_PHY_INIT quirk to avoid phy initialization twice. Runtime suspend of phy drivers was failing from DWC3 driver as runtime usage value is 2 because the phy is initialized from DWC3 core and HCD core. DWC3 manages phy in their core drivers. Set this quirk to avoid phy initialization in HCD core. Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com> --- drivers/usb/host/xhci-plat.c | 3 +++ 1 file changed, 3 insertions(+)