[PATCH 2/5] dt-bindings: usb: mtu3: add properties about USB Role Switch

Chunfeng Yun
2019-03-08T06:13:39Z

Now the USB Role Switch is supported, so add properties about it

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
.../devicetree/bindings/usb/mediatek,mtu3.txt | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt
index 3382b5cb471d..97239913a7bd 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 siwtch, 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:
Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt

+The connector would be added as subnode if receptacle is Micro, see
+connector/usb-connector.txt
+
Example:
ssusb: usb@11271000 {
compatible = "mediatek,mt8173-mtu3";
--
2.20.1