diff options
author | Li Jun <jun.li@freescale.com> | 2015-06-17 16:12:17 +0800 |
---|---|---|
committer | Li Jun <jun.li@freescale.com> | 2015-07-22 10:22:09 +0800 |
commit | 35f15246e563d8c4f2e782d5e3634723475bbda9 (patch) | |
tree | d7fbee74b2f7073438945a852193967242242809 /Documentation | |
parent | 7d9c467ab3f46c8d6926e5afd80c539e851e705a (diff) |
MLK-11123-6 doc: dt-binding: usb: add otg related properties
Add otg version, srp, hnp and adp support for usb OTG port, then those OTG
features don't have to be decided by usb gadget drivers.
Signed-off-by: Li Jun <jun.li@freescale.com>
(cherry picked from commit 75b44bb302486c07636c3b00ba4b1226d785cd6f)
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; }; |