linux-kernel - [PATCH 6/9] Documentation: bindings: add dt documentation for Rockchip usb PHY

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Message-ID: <1422714496-423-7-git-send-email-kishon@ti.com>
Date:	Sat, 31 Jan 2015 19:58:13 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	<gregkh@...uxfoundation.org>
CC:	<kishon@...com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 6/9] Documentation: bindings: add dt documentation for Rockchip usb PHY

From: Yunzhi Li <lyz@...k-chips.com>

This patch adds a binding that describes the Rockchip usb PHYs
found on Rockchip SoCs usb interface.

Signed-off-by: Yunzhi Li <lyz@...k-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 .../devicetree/bindings/phy/rockchip-usb-phy.txt   |   37 ++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt

diff --git a/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
new file mode 100644
index 0000000..826454a
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/rockchip-usb-phy.txt
@@ -0,0 +1,37 @@
+ROCKCHIP USB2 PHY
+
+Required properties:
+ - compatible: rockchip,rk3288-usb-phy
+ - rockchip,grf : phandle to the syscon managing the "general
+   register files"
+ - #address-cells: should be 1
+ - #size-cells: should be 0
+
+Sub-nodes:
+Each PHY should be represented as a sub-node.
+
+Sub-nodes
+required properties:
+- #phy-cells: should be 0
+- reg: PHY configure reg address offset in GRF
+		"0x320" - for PHY attach to OTG controller
+		"0x334" - for PHY attach to HOST0 controller
+		"0x348" - for PHY attach to HOST1 controller
+
+Optional Properties:
+- clocks : phandle + clock specifier for the phy clocks
+- clock-names: string, clock name, must be "phyclk"
+
+Example:
+
+usbphy: phy {
+	compatible = "rockchip,rk3288-usb-phy";
+	rockchip,grf = <&grf>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	usbphy0: usb-phy0 {
+		#phy-cells = <0>;
+		reg = <0x320>;
+	};
+};
-- 
1.7.9.5

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