4 - maximum-speed: tells USB controllers we want to work up to a certain
5 speed. Valid arguments are "super-speed", "high-speed",
6 "full-speed" and "low-speed". In case this isn't passed
7 via DT, USB controllers should default to their maximum
9 - dr_mode: tells Dual-Role USB controllers that we want to work on a
10 particular mode. Valid arguments are "host",
11 "peripheral" and "otg". In case this attribute isn't
12 passed via DT, USB DRD controllers should default to
14 - otg-rev: tells usb driver the release number of the OTG and EH supplement
15 with which the device and its descriptors are compliant,
16 in binary-coded decimal (i.e. 2.0 is 0200H). This
17 property is used if any real OTG features(HNP/SRP/ADP)
18 is enabled, if ADP is required, otg-rev should be
20 - hnp-disable: tells OTG controllers we want to disable OTG HNP, normally HNP
21 is the basic function of real OTG except you want it
22 to be a srp-capable only B device.
23 - srp-disable: tells OTG controllers we want to disable OTG SRP, SRP is
24 optional for OTG device.
25 - adp-disable: tells OTG controllers we want to disable OTG ADP, ADP is
26 optional for OTG device.
28 This is an attribute to a USB controller such as:
31 compatible = "synopsys,dwc3";
32 reg = <0x4a030000 0xcfff>;
34 usb-phy = <&usb2_phy>, <&usb3,phy>;
35 maximum-speed = "super-speed";