[PATCH v2 1/4] dt-bindings: phy: Add documentation for NSP USB3 PHY
From: Yendapally Reddy Dhananjaya Reddy <hidden>
Date: 2017-01-17 16:14:55
Also in:
linux-arm-kernel, lkml, netdev
Subsystem:
generic phy framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Vinod Koul, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add documentation for USB3 PHY available in Northstar plus SoC Signed-off-by: Yendapally Reddy Dhananjaya Reddy <redacted> --- .../devicetree/bindings/phy/brcm,nsp-usb3-phy.txt | 39 ++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/brcm,nsp-usb3-phy.txt
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 0000000..e68ae5d
--- /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>; + };
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2.1.0