[PATCH v4 06/23] doc: dt-binding: usb: add otg related properties
From: Li Jun <hidden>
Date: 2015-06-17 05:43:38
Subsystem:
open firmware and flattened device tree bindings, the rest, usb subsystem · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Greg Kroah-Hartman
Possibly related (same subject, not in this thread)
- 2015-06-17 · Re: [PATCH v4 06/23] doc: dt-binding: usb: add otg related properties · Roger Quadros <hidden>
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 <redacted> --- Documentation/devicetree/bindings/usb/generic.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt
index 477d5bb..bba8257 100644
--- a/Documentation/devicetree/bindings/usb/generic.txt
+++ b/Documentation/devicetree/bindings/usb/generic.txt@@ -11,6 +11,19 @@ Optional properties: "peripheral" and "otg". In case this attribute isn't passed via DT, USB DRD controllers should default to OTG. + - 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:
@@ -21,4 +34,6 @@ dwc3@4a030000 { usb-phy = <&usb2_phy>, <&usb3,phy>; maximum-speed = "super-speed"; dr_mode = "otg"; + otg-rev = <0x0200>; + adp-disable; };
--
1.9.1
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