> -----Original Message----- > From: Rob Herring [mailto:r...@kernel.org] > Sent: Saturday, December 16, 2017 6:26 AM > To: Jun Li <jun...@nxp.com> > Cc: mathias.ny...@intel.com; gre...@linuxfoundation.org; > mark.rutl...@arm.com; linux-usb@vger.kernel.org; > devicet...@vger.kernel.org > Subject: Re: [PATCH 1/2] dt-bindings: usb-xhci: add usb3-resume-missing-cas > property > > On Tue, Dec 12, 2017 at 11:57:17AM +0800, Li Jun wrote: > > Adding 'usb3-resume-missing-cas' property to enable XHCI_MISSING_CAS > > quirk flag in case there is CAS missing if device plugged in S3. > > > > Signed-off-by: Li Jun <jun...@nxp.com> > > --- > > Documentation/devicetree/bindings/usb/usb-xhci.txt | 2 ++ > > 1 file changed, 2 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt > > b/Documentation/devicetree/bindings/usb/usb-xhci.txt > > index e2ea59b..c413e188 100644 > > --- a/Documentation/devicetree/bindings/usb/usb-xhci.txt > > +++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt > > @@ -32,6 +32,8 @@ Optional properties: > > - usb3-lpm-capable: determines if platform is USB3 LPM capable > > - quirk-broken-port-ped: set if the controller has broken port disable > mechanism > > - imod-interval-ns: default interrupt moderation interval is 5000ns > > + - usb3-resume-missing-cas: set if the CAS(Cold Attach Status) may lose in > case > > + usb3 device plugged in while system sleep. > > This should be implied by an SoC specific compatible string for the XHCI > block.
The quirk is already using on some PCI platforms(xhci-pci.c), so I think it will be possible used for other SoCs as well in future. thanks Jun Li > > Rob -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
