diff options
Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
-rw-r--r-- | Documentation/devicetree/bindings/i2c/mrvl-i2c.txt | 37 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/i2c/sirf-i2c.txt | 19 |
2 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/mrvl-i2c.txt b/Documentation/devicetree/bindings/i2c/mrvl-i2c.txt new file mode 100644 index 000000000000..071eb3caae91 --- /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 : <a b> 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>; + }; + diff --git a/Documentation/devicetree/bindings/i2c/sirf-i2c.txt b/Documentation/devicetree/bindings/i2c/sirf-i2c.txt new file mode 100644 index 000000000000..7baf9e133fa8 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/sirf-i2c.txt @@ -0,0 +1,19 @@ +I2C for SiRFprimaII platforms + +Required properties : +- compatible : Must be "sirf,prima2-i2c" +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: interrupt number to the cpu. + +Optional properties: +- clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz. + The absence of the propoerty indicates the default frequency 100 kHz. + +Examples : + +i2c0: i2c@b00e0000 { + compatible = "sirf,prima2-i2c"; + reg = <0xb00e0000 0x10000>; + interrupts = <24>; +}; |