Messages in this thread | | | Subject | Re: [PATCH v2,1/5] dt-bindings: mt8173-xhci: support host side of dual-role mode | From | Sergei Shtylyov <> | Date | Tue, 31 May 2016 14:07:48 +0300 |
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Hello.
On 5/31/2016 8:52 AM, Chunfeng Yun wrote:
> Some resources, such as IPPC register etc, shared with device > driver are moved into common glue layer when xHCI driver is the > host side of dual-role mode and they should be changed as optional > properties if they are required ones before. For clarity, add > a new part of binding to support host side of dual-role mode. > > Additionally add optional properties of pinctrl for host only mode > > Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> > --- > .../devicetree/bindings/usb/mt8173-xhci.txt | 48 ++++++++++++++++++++ > 1 file changed, 48 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/mt8173-xhci.txt b/Documentation/devicetree/bindings/usb/mt8173-xhci.txt > index b3a7ffa..542e3fa 100644 > --- a/Documentation/devicetree/bindings/usb/mt8173-xhci.txt > +++ b/Documentation/devicetree/bindings/usb/mt8173-xhci.txt > @@ -2,6 +2,14 @@ MT8173 xHCI > > The device node for Mediatek SOC USB3.0 host controller > > +There are two scenarios: the first one only supports xHCI driver; > +the second one supports dual-role mode, and the host is based on xHCI > +driver. Take account of backward compatibility, we divide bindings > +into two parts. > + > +1st: only supports xHCI driver > +------------------------------------------------------------------------ > + > Required properties: > - compatible : should contain "mediatek,mt8173-xhci" > - reg : specifies physical base address and size of the registers, > @@ -27,6 +35,9 @@ Optional properties: > control register, it depends on "mediatek,wakeup-src". > - vbus-supply : reference to the VBUS regulator; > - usb3-lpm-capable : supports USB3.0 LPM > + - pinctl-names : a pinctrl state named "default" must be defined
pinctrl-names.
> + - pinctrl-0 : pin control group > + See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt > > Example: > usb30: usb@11270000 { [...]
MBR, Sergei
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