2012-03-01 13:49:57 +08:00
|
|
|
* I2C
|
|
|
|
|
|
|
|
|
|
Required properties :
|
|
|
|
|
|
|
|
|
|
- reg : Offset and length of the register set for the device
|
2012-04-27 16:21:08 +08:00
|
|
|
- compatible : should be "mrvl,mmp-twsi" where mmp is the name of a
|
2012-03-01 13:49:57 +08:00
|
|
|
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 :
|
|
|
|
|
|
2012-04-27 16:21:08 +08:00
|
|
|
- interrupts : the interrupt number
|
2012-03-01 13:49:57 +08:00
|
|
|
- interrupt-parent : the phandle for the interrupt controller that
|
2012-04-27 16:21:08 +08:00
|
|
|
services interrupts for this device. If the parent is the default
|
|
|
|
|
interrupt controller in device tree, it could be ignored.
|
2012-03-01 13:49:57 +08:00
|
|
|
- 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 {
|
2012-04-27 16:21:08 +08:00
|
|
|
compatible = "mrvl,mmp-twsi";
|
2012-03-01 13:49:57 +08:00
|
|
|
reg = <0xd4011000 0x1000>;
|
|
|
|
|
interrupts = <7>;
|
|
|
|
|
mrvl,i2c-fast-mode;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
twsi2: i2c@d4025000 {
|
2012-04-27 16:21:08 +08:00
|
|
|
compatible = "mrvl,mmp-twsi";
|
2012-03-01 13:49:57 +08:00
|
|
|
reg = <0xd4025000 0x1000>;
|
|
|
|
|
interrupts = <58>;
|
|
|
|
|
};
|
|
|
|
|
|
