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authorSoren Brinkmann <soren.brinkmann@xilinx.com>2014-04-04 14:27:54 -0700
committerWolfram Sang <wsa@the-dreams.de>2014-04-06 17:45:51 +0200
commit893f0677725fec4927f78195a7c52fbe24c9e467 (patch)
tree6dda5735e8c0df786d85eed30298d5414ea384df /Documentation
parent9f02fba84be15aa5df1ae4710fb759658fe87b42 (diff)
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>
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-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-cadence.txt24
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+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>;
+ };