[v3,3/6] dt-bindings: usb: mtu3: add properties about USB Role Switch
diff mbox series

Message ID 1554257354-7440-4-git-send-email-chunfeng.yun@mediatek.com
State Superseded
Headers show
  • add USB Type-B GPIO connector driver
Related show


Context Check Description
robh/checkpatch success

Commit Message

Chunfeng Yun April 3, 2019, 2:09 a.m. UTC
Now the USB Role Switch is supported, so add properties about it

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
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, 8 insertions(+), 2 deletions(-)

diff mbox series

diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
index 3382b5cb471d..6e004c4a89af 100644
--- a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
+++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
@@ -27,7 +27,9 @@  Optional properties:
  - ranges : allows valid 1:1 translation between child's address space and
 	parent's address space
  - extcon : external connector for vbus and idpin changes detection, needed
-	when supports dual-role mode.
+	when supports dual-role mode; it's consiedered valid for compatibility
+	reasons, and not allowed for new bindings, use the property
+	usb-role-switch instead.
  - vbus-supply : reference to the VBUS regulator, needed when supports
 	dual-role mode.
  - pinctrl-names : a pinctrl state named "default" is optional, and need be
@@ -36,7 +38,8 @@  Optional properties:
 	is not set.
  - pinctrl-0 : pin control group
 	See: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+ - usb-role-switch : use USB Role Switch to support dual-role switch, but
+	not extcon
  - maximum-speed : valid arguments are "super-speed", "high-speed" and
 	"full-speed"; refer to usb/generic.txt
  - enable-manual-drd : supports manual dual-role switch via debugfs; usually
@@ -61,6 +64,9 @@  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";