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....@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 {
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