Add bindings for common properties, include maximum-speed, dr_mode and phy_type
Signed-off-by: Chunfeng Yun chunfeng.yun@mediatek.com --- v2~v6: no changes --- doc/device-tree-bindings/usb/generic.txt | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 doc/device-tree-bindings/usb/generic.txt
diff --git a/doc/device-tree-bindings/usb/generic.txt b/doc/device-tree-bindings/usb/generic.txt new file mode 100644 index 0000000..a02a198 --- /dev/null +++ b/doc/device-tree-bindings/usb/generic.txt @@ -0,0 +1,31 @@ +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. + +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"; +};