This patch adds the dt documentation for the usb picophy found on stih407 SoC family available from STMicroelectronics.
Signed-off-by: Giuseppe Cavallaro <[email protected]> Signed-off-by: Peter Griffin <[email protected]> --- .../devicetree/bindings/phy/phy-stih407-usb.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-stih407-usb.txt 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 0000000..650d346 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-stih407-usb.txt @@ -0,0 +1,37 @@ +ST STiH407 USB-PHY controller + +This file documents the dt bindings for the picoPHY driver which is the PHY for both USB2 and USB3 host controllers +controllers available on STiH407 SoC families. + +On STiH410, we have to use the DWC3 port#2 with a picoPHY to manage USB2 +devices. The USB2 Controller will use the ports #0 and #1. + +This is to document the DT parameters to be passed from the blob in that case. + +Required properties: +- compatible : should be "st,stih407-usb2-phy" +- reg : contain the offset and length of the system configuration registers + used as glue logic to control & parameter phy +- reg-names : the names of the system configuration registers in "reg", should be "param" and "reg" +- st,syscfg : sysconfig register to manage phy parameter at driver level +- resets : list of phandle and reset specifier pairs. There should be two entries, one + for the whole phy and one for the port +- reset-names : list of reset signal names. Should be "global" and "port" +See: Documentation/devicetree/bindings/reset/st,sti-powerdown.txt +See: Documentation/devicetree/bindings/reset/reset.txt + +Example: + +usb2_picophy0: usbpicophy@0 { + compatible = "st,stih407-usb2-phy"; + reg = <0xf8 0x04>, /* syscfg 5062 */ + <0xf4 0x04>; /* syscfg 5061 */ + reg-names = "param", + "ctrl"; + #phy-cells = <0>; + st,syscfg = <&syscfg_core>; + resets = <&softreset STIH407_PICOPHY_SOFTRESET>, + <&picophyreset STIH407_PICOPHY0_RESET>; + reset-names = "global", + "port"; +}; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
