From 46e446db4fb2cdb2f1bc69d3981fa23738a42835 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Thu, 1 Mar 2012 13:49:57 +0800 Subject: Document: devicetree: add OF documents for arch-mmp Add OF support in Document/devicetree directory. Signed-off-by: Haojian Zhuang Acked-by: Arnd Bergmann --- Documentation/devicetree/bindings/i2c/mrvl-i2c.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/mrvl-i2c.txt (limited to 'Documentation/devicetree/bindings/i2c/mrvl-i2c.txt') diff --git a/Documentation/devicetree/bindings/i2c/mrvl-i2c.txt b/Documentation/devicetree/bindings/i2c/mrvl-i2c.txt new file mode 100644 index 00000000000..071eb3caae9 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/mrvl-i2c.txt @@ -0,0 +1,37 @@ +* I2C + +Required properties : + + - reg : Offset and length of the register set for the device + - compatible : should be "mrvl,mmp-twsi" where CHIP is the name of a + compatible processor, e.g. pxa168, pxa910, mmp2, mmp3. + For the pxa2xx/pxa3xx, an additional node "mrvl,pxa-i2c" is required + as shown in the example below. + +Recommended properties : + + - interrupts : where a is the interrupt number and b is a + field that represents an encoding of the sense and level + information for the interrupt. This should be encoded based on + the information in section 2) depending on the type of interrupt + controller you have. + - interrupt-parent : the phandle for the interrupt controller that + services interrupts for this device. + - mrvl,i2c-polling : Disable interrupt of i2c controller. Polling + status register of i2c controller instead. + - mrvl,i2c-fast-mode : Enable fast mode of i2c controller. + +Examples: + twsi1: i2c@d4011000 { + compatible = "mrvl,mmp-twsi", "mrvl,pxa-i2c"; + reg = <0xd4011000 0x1000>; + interrupts = <7>; + mrvl,i2c-fast-mode; + }; + + twsi2: i2c@d4025000 { + compatible = "mrvl,mmp-twsi", "mrvl,pxa-i2c"; + reg = <0xd4025000 0x1000>; + interrupts = <58>; + }; + -- cgit v1.2.3-70-g09d2