diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2019-08-29 17:22:31 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-03 16:02:32 +0200 |
| commit | 3ef8685f84b316ea0e6ad00d65fa5f932d995c64 (patch) | |
| tree | 22665c6f03daf4ef38fadfef82ffec4c5ca4b510 /Documentation | |
| parent | f651c73e71f53f65e9846677d79d8e120452b59f (diff) | |
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: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1567070558-29417-5-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/mediatek,mtu3.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt b/Documentation/devicetree/bindings/usb/mediatek,mtu3.txt index 5d740e9d4525..b9af7f5ee91d 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 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"; |