On Wed, Oct 21, 2020 at 10:15:43PM -0700, Thinh Nguyen wrote: > Synopsys DWC_usb3x host controllers will not detect enhanced super-speed > (eSS) device disconnection if it has active isochronous IN endpoint(s) Why do you need a DT quirk if it's all DWC3? Imply it from the compatible. > behind one or more eSS hubs. Introduce a quirk to workaround this for > xhci and dwc3 device tree. > > Signed-off-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/usb/dwc3.txt | 3 +++ > Documentation/devicetree/bindings/usb/usb-xhci.txt | 2 ++ These are getting converted to schema. > 2 files changed, 5 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt > index 1aae2b6160c1..b23b52f5842a 100644 > --- a/Documentation/devicetree/bindings/usb/dwc3.txt > +++ b/Documentation/devicetree/bindings/usb/dwc3.txt > @@ -105,6 +105,9 @@ Optional properties: > this and tx-thr-num-pkt-prd to a valid, non-zero value > 1-16 (DWC_usb31 programming guide section 1.2.3) to > enable periodic ESS TX threshold. > + - snps,blocked-disconnection: enable workaround to undetected disconnection > + while isoc endpoint(s) are active for DWC_usb3x > + controllers operating as host We certainly don't need 2 versions of the same property. > - <DEPRECATED> tx-fifo-resize: determines if the FIFO *has* to be reallocated. > - snps,incr-burst-type-adjustment: Value for INCR burst type of GSBUSCFG0 > diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt b/Documentation/devicetree/bindings/usb/usb-xhci.txt > index 0c5cff84a969..60812ae74d46 100644 > --- a/Documentation/devicetree/bindings/usb/usb-xhci.txt > +++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt > @@ -28,6 +28,8 @@ Optional properties: > - quirk-broken-port-ped: set if the controller has broken port disable mechanism > - imod-interval-ns: default interrupt moderation interval is 5000ns > - phys : see usb-hcd.yaml in the current directory > + - blocked-disconnection: workaround undetected disconnection while isoc > + endpoint(s) are active > > additionally the properties from usb-hcd.yaml (in the current directory) are > supported. > > base-commit: 270315b8235e3d10c2e360cff56c2f9e0915a252 > -- > 2.28.0 >
