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Diffstat (limited to 'Documentation/devicetree/bindings/phy/phy-stih407-usb.txt')
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diff --git a/Documentation/devicetree/bindings/phy/phy-stih407-usb.txt b/Documentation/devicetree/bindings/phy/phy-stih407-usb.txt new file mode 100644 index 000000000000..1ef8228db73b --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-stih407-usb.txt | |||
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1 | ST STiH407 USB PHY controller | ||
2 | |||
3 | This file documents the dt bindings for the usb picoPHY driver which is the PHY for both USB2 and USB3 | ||
4 | host controllers (when controlling usb2/1.1 devices) available on STiH407 SoC family from STMicroelectronics. | ||
5 | |||
6 | Required properties: | ||
7 | - compatible : should be "st,stih407-usb2-phy" | ||
8 | - reg : contain the offset and length of the system configuration registers | ||
9 | used as glue logic to control & parameter phy | ||
10 | - reg-names : the names of the system configuration registers in "reg", should be "param" and "reg" | ||
11 | - st,syscfg : sysconfig register to manage phy parameter at driver level | ||
12 | - resets : list of phandle and reset specifier pairs. There should be two entries, one | ||
13 | for the whole phy and one for the port | ||
14 | - reset-names : list of reset signal names. Should be "global" and "port" | ||
15 | See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt | ||
16 | See: Documentation/devicetree/bindings/reset/reset.txt | ||
17 | |||
18 | Example: | ||
19 | |||
20 | usb2_picophy0: usbpicophy@f8 { | ||
21 | compatible = "st,stih407-usb2-phy"; | ||
22 | reg = <0xf8 0x04>, /* syscfg 5062 */ | ||
23 | <0xf4 0x04>; /* syscfg 5061 */ | ||
24 | reg-names = "param", "ctrl"; | ||
25 | #phy-cells = <0>; | ||
26 | st,syscfg = <&syscfg_core>; | ||
27 | resets = <&softreset STIH407_PICOPHY_SOFTRESET>, | ||
28 | <&picophyreset STIH407_PICOPHY0_RESET>; | ||
29 | reset-names = "global", "port"; | ||
30 | }; | ||