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Diffstat (limited to 'Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt b/Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt new file mode 100644 index 000000000000..ecf21dadf187 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt @@ -0,0 +1,39 @@ +Qualcomm Technologies, Inc. MSM PHY Transceivers + +Required properties: + +- compatible: Should be "qcom,usb-ssphy" +- reg: Address and length of the register set for the device +- clocks: a list of handles to the PHY clocks. Use as per + Documentation/devicetree/bindings/clock/clock-bindings.txt +- clock-names: Names of the clocks in 1-1 correspondence with the "clocks" + property. "ref_clk", "cfg_ahb_clk" and "pipe_clk" are mandatory. + +- <supply-name>-supply: phandle to the regulator device tree node + Required "supply-name" examples are: + "vdd" : vdd supply for SSPHY digital circuit operation + "vdda18" : 1.8v high-voltage analog supply for SSPHY + +- qcom,vdd-voltage-level: This property must be a list of three integer +values (no, min, max) where each value represents either a voltage in +microvolts or a value corresponding to voltage corner + +Optional properties: + +- qcom,vbus-valid-override: If present, indicates VBUS pin is not connected to +the USB PHY and the controller must rely on external VBUS notification in +order to manually relay the notification to the SSPHY. + +Example: + +ssphy@f9200000 { + compatible = "qcom,usb-ssphy"; + reg = <0xf9200000 0xfc000>; + vdd-supply = <&pm8841_s2_corner>; + vdda18-supply = <&pm8941_l6>; + qcom,vdd-voltage-level = <1 5 7>; + clocks = <&clock_gcc USB_PHY_REF_CLK>, + <&clock_gcc USB_PHY_CFG_AHB_CLK>, + <&clock_gcc USB_PHY_PIPE_CLK>; + clock-names = "ref_clk", "cfg_ahb_clk", "pipe_clk"; +}; |