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Commit 3ef8685f authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
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dt-bindings: usb: mtu3: add properties about USB Role Switch 



Now the USB Role Switch is supported, so add properties about it,
and modify some description related.

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1567070558-29417-5-git-send-email-chunfeng.yun@mediatek.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f651c73e

Documentation/devicetree/bindings/usb/mediatek,mtu3.txt

+10 −0
Original line number Diff line number Diff line
@@ -28,8 +28,13 @@ Optional properties: 
	parent's address space

 - extcon : external connector for vbus and idpin changes detection, needed

	when supports dual-role mode.

	it's considered valid for compatibility reasons, not allowed for

	new bindings, and use "usb-role-switch" property instead.

 - vbus-supply : reference to the VBUS regulator, needed when supports

	dual-role mode.

	it's considered valid for compatibility reasons, not allowed for

	new bindings, and put into a usb-connector node.

	see connector/usb-connector.txt.

 - pinctrl-names : a pinctrl state named "default" is optional, and need be

	defined if auto drd switch is enabled, that means the property dr_mode

	is set as "otg", and meanwhile the property "mediatek,enable-manual-drd"
@@ -39,6 +44,8 @@ Optional properties: 


 - maximum-speed : valid arguments are "super-speed", "high-speed" and

	"full-speed"; refer to usb/generic.txt

 - usb-role-switch : use USB Role Switch to support dual-role switch, but

	not extcon; see usb/generic.txt.

 - enable-manual-drd : supports manual dual-role switch via debugfs; usually

	used when receptacle is TYPE-A and also wants to support dual-role

	mode.
@@ -61,6 +68,9 @@ The xhci should be added as subnode to mtu3 as shown in the following example 
if host mode is enabled. The DT binding details of xhci can be found in:

Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt



The port would be added as subnode if use "usb-role-switch" property.

	see graph.txt



Example:

ssusb: usb@11271000 {

	compatible = "mediatek,mt8173-mtu3";