From: Thor Thayer <thor.thayer@xxxxxxxxxxxxxxx>
Add the documentation to support the Altera I2C Controller.
Signed-off-by: Thor Thayer <thor.thayer@xxxxxxxxxxxxxxx>
---
.../devicetree/bindings/i2c/i2c-altera.txt | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/i2c-altera.txt
diff --git a/Documentation/devicetree/bindings/i2c/i2c-altera.txt b/Documentation/devicetree/bindings/i2c/i2c-altera.txt
new file mode 100644
index 0000000..a67241c
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-altera.txt
@@ -0,0 +1,37 @@
+* Altera I2C Controller
+
+Required properties :
+ - compatible : should be "altr,sip-i2c"
+ - reg : Offset and length of the register set for the device
+ - interrupts : <IRQ> where IRQ is the interrupt number.
+ - clocks : phandles to input clocks.
+ - #address-cells = <1>;
+ - #size-cells = <0>;
+
+Recommended properties :
+ - clock-frequency : desired I2C bus clock frequency in Hz.
+
+Optional properties :
+ - altr,fifo-size : Size of the RX and TX FIFOs.
+ - Child nodes conforming to i2c bus binding
+
+Example :
+
+ i2c@100080000 {
+ compatible = "altr,sip-i2c";
+ reg = <0x00000001 0x00080000 0x00000040>;
+ interrupt-parent = <&intc>;
+ interrupts = <0 43 4>;
+ clocks = <&clk_0>;
+ clock-frequency = <100000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ altr,fifo-size = <4>;
+
+ eeprom@51 {
+ compatible = "atmel,24c32";
+ reg = <0x51>;
+ pagesize = <32>;
+ };
+ };
+
--
1.9.1
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