add a DT binding documentation of usb3.0 phy for MT65xx
SoCs from Mediatek.
Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
---
.../devicetree/bindings/phy/phy-mt65xx-u3.txt | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/phy-mt65xx-u3.txt
diff --git a/Documentation/devicetree/bindings/phy/phy-mt65xx-u3.txt b/Documentation/devicetree/bindings/phy/phy-mt65xx-u3.txt
new file mode 100644
index 0000000..752abc0
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-mt65xx-u3.txt
@@ -0,0 +1,21 @@
+MT65xx USB3.0 PHY
+
+The device node for Mediatek SOC usb3.0 phy
+
+Required properties:
+ - compatible : Should be "mediatek,mt8173-u3phy"
+ - reg : Offset and length of registers for phy domain
+ - clocks : must support all clocks that phy need
+ - clock-names: should be "u3phya_ref" for u3phya reference clock.
+ - #phy-cells : must be 1 for the phy
+
+Example:
+
+u3phy: usb-phy@11290000 {
+ compatible = "mediatek,mt8173-u3phy";
+ reg = <0 0x11290000 0 0x3000>;
+ clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>;
+ clock-names = "u3phya_ref";
+ #phy-cells = <1>;
+ status = "okay";
+};
--
1.8.1.1.dirty
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