[PATCH v2 3/5] phy: cygnus: pcie: Define DT binding

[Ray Jui <rjui@broadcom.com>]

Add DT binding document for Broadcom Cygnus PCIe PHY driver

Signed-off-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Arun Parameswaran <aparames@broadcom.com>
Reviewed-by: JD (Jiandong) Zheng <jdzheng@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
---
 .../bindings/phy/brcm,cygnus-pcie-phy.txt          |   34 ++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/brcm,cygnus-pcie-phy.txt

diff --git a/Documentation/devicetree/bindings/phy/brcm,cygnus-pcie-phy.txt b/Documentation/devicetree/bindings/phy/brcm,cygnus-pcie-phy.txt
new file mode 100644
index 0000000..1b1a7af
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/brcm,cygnus-pcie-phy.txt
@@ -0,0 +1,34 @@
+Broadcom Cygnus PCIe PHY
+
+Required properties:
+- compatible: Must be "brcm,cygnus-pcie-phy"
+- reg: base address and length of the CRMU block
+- #phy-cells: must be <2>
+The first cell is the PHY ID:
+0 - PCIe RC 0
+1 - PCIe RC 1
+The second cell is the internal PHY address
+
+Example:
+	mdio_bus {
+		...
+		phy: phy@0301d0a0 {
+			compatible = "brcm,cygnus-pcie-phy";
+			reg = <0x0301d0a0 0x14>;
+			#phy-cells = <2>;
+		};
+	};
+
+	pcie0: pcie@18012000 {
+		...
+		...
+		phys = <&phy 0 5>;
+		phy-names = "pcie-phy";
+	};
+
+	pcie1: pcie@18013000 {
+		...
+		...
+		phys = <&phy 1 6>;
+		phy-names = "pcie-phy";
+	};
-- 
1.7.9.5