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 - phy_type: tells USB controllers that we want to configure the core to support
15 a UTMI+ PHY with an 8- or 16-bit interface if UTMI+ is
16 selected. Valid arguments are "utmi" and "utmi_wide".
17 In case this isn't passed via DT, USB controllers should
18 default to HW capability.
19 - otg-rev: tells usb driver the release number of the OTG and EH supplement
20 with which the device and its descriptors are compliant,
21 in binary-coded decimal (i.e. 2.0 is 0200H). This
22 property is used if any real OTG features(HNP/SRP/ADP)
23 is enabled, if ADP is required, otg-rev should be
25 - hnp-disable: tells OTG controllers we want to disable OTG HNP, normally HNP
26 is the basic function of real OTG except you want it
27 to be a srp-capable only B device.
28 - srp-disable: tells OTG controllers we want to disable OTG SRP, SRP is
29 optional for OTG device.
30 - adp-disable: tells OTG controllers we want to disable OTG ADP, ADP is
31 optional for OTG device.
33 This is an attribute to a USB controller such as:
36 compatible = "synopsys,dwc3";
37 reg = <0x4a030000 0xcfff>;
39 usb-phy = <&usb2_phy>, <&usb3,phy>;
40 maximum-speed = "super-speed";
42 phy_type = "utmi_wide";