From 893f0677725fec4927f78195a7c52fbe24c9e467 Mon Sep 17 00:00:00 2001
From: Soren Brinkmann <soren.brinkmann@xilinx.com>
Date: Fri, 4 Apr 2014 14:27:54 -0700
Subject: [PATCH] i2c: cadence: Document device tree bindings
Add device tree binding documentation for the Cadence I2C controller.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
---
.../devicetree/bindings/i2c/i2c-cadence.txt | 24 +++++++++++++++++++
1 file changed, 24 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/i2c-cadence.txt
diff --git a/Documentation/devicetree/bindings/i2c/i2c-cadence.txt b/Documentation/devicetree/bindings/i2c/i2c-cadence.txt
new file mode 100644
index 0000000000000..7cb0b5608f495
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-cadence.txt
@@ -0,0 +1,24 @@
+Binding for the Cadence I2C controller
+
+Required properties:
+ - reg: Physical base address and size of the controller's register area.
+ - compatible: Compatibility string. Must be 'cdns,i2c-r1p10'.
+ - clocks: Input clock specifier. Refer to common clock bindings.
+ - interrupts: Interrupt specifier. Refer to interrupt bindings.
+ - #address-cells: Should be 1.
+ - #size-cells: Should be 0.
+
+Optional properties:
+ - clock-frequency: Desired operating frequency, in Hz, of the bus.
+ - clock-names: Input clock name, should be 'pclk'.
+
+Example:
+ i2c@e0004000 {
+ compatible = "cdns,i2c-r1p10";
+ clocks = <&clkc 38>;
+ interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+ reg = <0xe0004000 0x1000>;
+ clock-frequency = <400000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
--
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