Documentation: dt-bindings: Add documentation for the Meson USB2 PHYs

Add the documentation for the bindings for the Meson8b and GXBB USB2
PHYs.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
This commit is contained in:
Martin Blumenstingl 2016-09-11 15:41:07 +02:00 committed by Kevin Hilman
parent f94310ac07
commit c940d7658d
1 changed files with 27 additions and 0 deletions

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* Amlogic USB2 PHY
Required properties:
- compatible: Depending on the platform this should be one of:
"amlogic,meson8b-usb2-phy"
"amlogic,meson-gxbb-usb2-phy"
- reg: The base address and length of the registers
- #phys-cells: should be 0 (see phy-bindings.txt in this directory)
- clocks: phandle and clock identifier for the phy clocks
- clock-names: "usb_general" and "usb"
Optional properties:
- resets: reference to the reset controller
- phy-supply: see phy-bindings.txt in this directory
Example:
usb0_phy: usb_phy@0 {
compatible = "amlogic,meson-gxbb-usb2-phy";
#phy-cells = <0>;
reg = <0x0 0x0 0x0 0x20>;
resets = <&reset RESET_USB_OTG>;
clocks = <&clkc CLKID_USB>, <&clkc CLKID_USB0>;
clock-names = "usb_general", "usb";
phy-supply = <&usb_vbus>;
};