| 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 |
| Haojian Zhuang | ace1297 | 2012-04-27 16:21:08 +0800 | [diff] [blame^] | 6 | - compatible : should be "mrvl,mmp-twsi" where mmp is the name of a |
| Haojian Zhuang | 46e446d | 2012-03-01 13:49:57 +0800 | [diff] [blame] | 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 | |
| Haojian Zhuang | ace1297 | 2012-04-27 16:21:08 +0800 | [diff] [blame^] | 13 | - interrupts : the interrupt number |
| Haojian Zhuang | 46e446d | 2012-03-01 13:49:57 +0800 | [diff] [blame] | 14 | - interrupt-parent : the phandle for the interrupt controller that |
| Haojian Zhuang | ace1297 | 2012-04-27 16:21:08 +0800 | [diff] [blame^] | 15 | services interrupts for this device. If the parent is the default |
| 16 | interrupt controller in device tree, it could be ignored. |
| Haojian Zhuang | 46e446d | 2012-03-01 13:49:57 +0800 | [diff] [blame] | 17 | - mrvl,i2c-polling : Disable interrupt of i2c controller. Polling |
| 18 | status register of i2c controller instead. |
| 19 | - mrvl,i2c-fast-mode : Enable fast mode of i2c controller. |
| 20 | |
| 21 | Examples: |
| 22 | twsi1: i2c@d4011000 { |
| Haojian Zhuang | ace1297 | 2012-04-27 16:21:08 +0800 | [diff] [blame^] | 23 | compatible = "mrvl,mmp-twsi"; |
| Haojian Zhuang | 46e446d | 2012-03-01 13:49:57 +0800 | [diff] [blame] | 24 | reg = <0xd4011000 0x1000>; |
| 25 | interrupts = <7>; |
| 26 | mrvl,i2c-fast-mode; |
| 27 | }; |
| 28 | |
| 29 | twsi2: i2c@d4025000 { |
| Haojian Zhuang | ace1297 | 2012-04-27 16:21:08 +0800 | [diff] [blame^] | 30 | compatible = "mrvl,mmp-twsi"; |
| Haojian Zhuang | 46e446d | 2012-03-01 13:49:57 +0800 | [diff] [blame] | 31 | reg = <0xd4025000 0x1000>; |
| 32 | interrupts = <58>; |
| 33 | }; |
| 34 | |