Messages in this thread | | | Subject | Re: [PATCH v2 1/3] dt-bindings: usb: usb-xhci: Add bindings for usb-skip-phy-init property | From | Sandeep Maheswaram <> | Date | Tue, 16 Nov 2021 16:11:30 +0530 |
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On 11/13/2021 4:17 AM, Rob Herring wrote: > On Mon, Nov 08, 2021 at 12:11:48PM +0530, Sandeep Maheswaram wrote: >> Adding bindings for usb-skip-phy-init property. >> 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. >> Some controllers like DWC3 and CDNS3 manage phy in their core drivers. >> This property can be set to avoid phy initialization in HCD core. > You already know if you have a DWC3 and CDNS3 controller, so you don't > need more data in DT.
We don't have a device tree node for xhci platform device and create xhci platform device from dwc3/host.c
So we want to pass this property to check in xhci-plat.c and skip phy initialization.
>> Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com> >> --- >> Documentation/devicetree/bindings/usb/usb-xhci.yaml | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.yaml b/Documentation/devicetree/bindings/usb/usb-xhci.yaml >> index 965f87f..a64d29f 100644 >> --- a/Documentation/devicetree/bindings/usb/usb-xhci.yaml >> +++ b/Documentation/devicetree/bindings/usb/usb-xhci.yaml >> @@ -25,6 +25,10 @@ properties: >> description: Set if the controller has broken port disable mechanism >> type: boolean >> >> + usb-skip-phy-init: >> + description: Set if the phy initialization is managed by controller >> + type: boolean >> + >> imod-interval-ns: >> description: Interrupt moderation interval >> default: 5000 >> -- >> 2.7.4 >> >>
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