diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/generic.txt | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt index 93885decebab..bba825711873 100644 --- a/Documentation/devicetree/bindings/usb/generic.txt +++ b/Documentation/devicetree/bindings/usb/generic.txt @@ -11,9 +11,20 @@ Optional properties: "peripheral" and "otg". In case this attribute isn't passed via DT, USB DRD controllers should default to OTG. - - adp-support: tells OTG USB controllers that ADP is enabled. In case this - attribute isn't passed via DT, ADP should not be - supported. + - otg-rev: tells usb driver the release number of the OTG and EH supplement + with which the device and its descriptors are compliant, + in binary-coded decimal (i.e. 2.0 is 0200H). This + property is used if any real OTG features(HNP/SRP/ADP) + is enabled, if ADP is required, otg-rev should be + 0x0200 or above. + - hnp-disable: tells OTG controllers we want to disable OTG HNP, normally HNP + is the basic function of real OTG except you want it + to be a srp-capable only B device. + - srp-disable: tells OTG controllers we want to disable OTG SRP, SRP is + optional for OTG device. + - adp-disable: tells OTG controllers we want to disable OTG ADP, ADP is + optional for OTG device. + This is an attribute to a USB controller such as: dwc3@4a030000 { @@ -23,5 +34,6 @@ dwc3@4a030000 { usb-phy = <&usb2_phy>, <&usb3,phy>; maximum-speed = "super-speed"; dr_mode = "otg"; - adp-support; + otg-rev = <0x0200>; + adp-disable; }; |