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author | Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> | 2017-01-17 11:14:27 -0500 |
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committer | Kishon Vijay Abraham I <kishon@ti.com> | 2017-01-27 13:06:53 +0530 |
commit | c8ca631f9480cb4c6df78dd3d2eeeb5ac99ba4f3 (patch) | |
tree | 26d670021932613be288ab3d1d99d6faf62f9a72 | |
parent | 42020c70656f9966e9ed83f9fe67369b0abf75e8 (diff) | |
download | linux-c8ca631f9480cb4c6df78dd3d2eeeb5ac99ba4f3.tar.bz2 |
dt-bindings: phy: Add documentation for NSP USB3 PHY
Add documentation for USB3 PHY available in Northstar plus SoC
Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
-rw-r--r-- | Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt b/Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt new file mode 100644 index 000000000000..e68ae5dec9c9 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt @@ -0,0 +1,39 @@ +Broadcom USB3 phy binding for northstar plus SoC +The USB3 phy is internal to the SoC and is accessed using mdio interface. + +Required mdio bus properties: +- reg: Should be 0x0 for SoC internal USB3 phy +- #address-cells: must be 1 +- #size-cells: must be 0 + +Required USB3 PHY properties: +- compatible: should be "brcm,nsp-usb3-phy" +- reg: USB3 Phy address on SoC internal MDIO bus and it should be 0x10. +- usb3-ctrl-syscon: handler of syscon node defining physical address + of usb3 control register. +- #phy-cells: must be 0 + +Required usb3 control properties: +- compatible: should be "brcm,nsp-usb3-ctrl" +- reg: offset and length of the control registers + +Example: + + mdio@0 { + reg = <0x0>; + #address-cells = <1>; + #size-cells = <0>; + + usb3_phy: usb-phy@10 { + compatible = "brcm,nsp-usb3-phy"; + reg = <0x10>; + usb3-ctrl-syscon = <&usb3_ctrl>; + #phy-cells = <0>; + status = "disabled"; + }; + }; + + usb3_ctrl: syscon@104408 { + compatible = "brcm,nsp-usb3-ctrl", "syscon"; + reg = <0x104408 0x3fc>; + }; |