| Haojian Zhuang | 46e446d | 2012-03-01 13:49:57 +0800 | [diff] [blame^] | 1 | * I2C |
| 2 | |
| 3 | Required properties : |
| 4 | |
| 5 | - reg : Offset and length of the register set for the device |
| 6 | - compatible : should be "mrvl,mmp-twsi" where CHIP is the name of a |
| 7 | compatible processor, e.g. pxa168, pxa910, mmp2, mmp3. |
| 8 | For the pxa2xx/pxa3xx, an additional node "mrvl,pxa-i2c" is required |
| 9 | as shown in the example below. |
| 10 | |
| 11 | Recommended properties : |
| 12 | |
| 13 | - interrupts : <a b> where a is the interrupt number and b is a |
| 14 | field that represents an encoding of the sense and level |
| 15 | information for the interrupt. This should be encoded based on |
| 16 | the information in section 2) depending on the type of interrupt |
| 17 | controller you have. |
| 18 | - interrupt-parent : the phandle for the interrupt controller that |
| 19 | services interrupts for this device. |
| 20 | - mrvl,i2c-polling : Disable interrupt of i2c controller. Polling |
| 21 | status register of i2c controller instead. |
| 22 | - mrvl,i2c-fast-mode : Enable fast mode of i2c controller. |
| 23 | |
| 24 | Examples: |
| 25 | twsi1: i2c@d4011000 { |
| 26 | compatible = "mrvl,mmp-twsi", "mrvl,pxa-i2c"; |
| 27 | reg = <0xd4011000 0x1000>; |
| 28 | interrupts = <7>; |
| 29 | mrvl,i2c-fast-mode; |
| 30 | }; |
| 31 | |
| 32 | twsi2: i2c@d4025000 { |
| 33 | compatible = "mrvl,mmp-twsi", "mrvl,pxa-i2c"; |
| 34 | reg = <0xd4025000 0x1000>; |
| 35 | interrupts = <58>; |
| 36 | }; |
| 37 | |