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[v8,04/11] dt-bindings: usb: mtu3: add properties about USB Role Switch

Message ID 1563958245-6321-5-git-send-email-chunfeng.yun@mediatek.com (mailing list archive)
State New, archived
Headers show
Series add USB GPIO based connection detection driver | expand

Commit Message

Chunfeng Yun July 24, 2019, 8:50 a.m. UTC
Now the USB Role Switch is supported, so add properties about it,
and modify some description related.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
v8 no changes
v7 no changes
v6 no changes

v5 changes:
 1. modify decription about extcon and vbus-supply properties
 2. make this patch depend on [1]

 [1]: [v3] dt-binding: usb: add usb-role-switch property

v4 no changes
v3 no changes

v2 changes:
  1. fix typo
  2. refer new binding about connector property
 .../devicetree/bindings/usb/mediatek,mtu3.txt          | 10 ++++++++++
 1 file changed, 10 insertions(+)
diff mbox series


diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
index 3382b5cb471d..3a8300205cdb 100644
--- a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
+++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
@@ -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
@@ -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:
+The port would be added as subnode if use "usb-role-switch" property.
+	see graph.txt
 ssusb: usb@11271000 {
 	compatible = "mediatek,mt8173-mtu3";