52 lines
2.1 KiB
Plaintext
52 lines
2.1 KiB
Plaintext
Generic USB Properties
|
|
|
|
Optional properties:
|
|
- maximum-speed: tells USB controllers we want to work up to a certain
|
|
speed. Valid arguments are "super-speed-plus",
|
|
"super-speed", "high-speed", "full-speed" and
|
|
"low-speed". In case this isn't passed via DT, USB
|
|
controllers should default to their maximum HW
|
|
capability.
|
|
- dr_mode: tells Dual-Role USB controllers that we want to work on a
|
|
particular mode. Valid arguments are "host",
|
|
"peripheral" and "otg". In case this attribute isn't
|
|
passed via DT, USB DRD controllers should default to
|
|
OTG.
|
|
- phy_type: tells USB controllers that we want to configure the core to support
|
|
a UTMI+ PHY with an 8- or 16-bit interface if UTMI+ is
|
|
selected. Valid arguments are "utmi" and "utmi_wide".
|
|
In case this isn't passed via DT, USB controllers should
|
|
default to HW capability.
|
|
- 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.
|
|
- companion: phandle of a companion
|
|
- 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.
|
|
- usb-role-switch: boolean, indicates that the device is capable of assigning
|
|
the USB data role (USB host or USB device) for a given
|
|
USB connector, such as Type-C, Type-B(micro).
|
|
see connector/usb-connector.txt.
|
|
|
|
This is an attribute to a USB controller such as:
|
|
|
|
dwc3@4a030000 {
|
|
compatible = "synopsys,dwc3";
|
|
reg = <0x4a030000 0xcfff>;
|
|
interrupts = <0 92 4>
|
|
usb-phy = <&usb2_phy>, <&usb3,phy>;
|
|
maximum-speed = "super-speed";
|
|
dr_mode = "otg";
|
|
phy_type = "utmi_wide";
|
|
otg-rev = <0x0200>;
|
|
adp-disable;
|
|
};
|