42 lines
1.1 KiB
Plaintext
42 lines
1.1 KiB
Plaintext
|
|
* Allwinner P2WI (Push/Pull 2 Wire Interface) controller
|
|
|
|
Required properties :
|
|
|
|
- reg : Offset and length of the register set for the device.
|
|
- compatible : Should one of the following:
|
|
- "allwinner,sun6i-a31-p2wi"
|
|
- interrupts : The interrupt line connected to the P2WI peripheral.
|
|
- clocks : The gate clk connected to the P2WI peripheral.
|
|
- resets : The reset line connected to the P2WI peripheral.
|
|
|
|
Optional properties :
|
|
|
|
- clock-frequency : Desired P2WI bus clock frequency in Hz. If not set the
|
|
default frequency is 100kHz
|
|
|
|
A P2WI may contain one child node encoding a P2WI slave device.
|
|
|
|
Slave device properties:
|
|
Required properties:
|
|
- reg : the I2C slave address used during the initialization
|
|
process to switch from I2C to P2WI mode
|
|
|
|
Example:
|
|
|
|
p2wi@1f03400 {
|
|
compatible = "allwinner,sun6i-a31-p2wi";
|
|
reg = <0x01f03400 0x400>;
|
|
interrupts = <0 39 4>;
|
|
clocks = <&apb0_gates 3>;
|
|
clock-frequency = <6000000>;
|
|
resets = <&apb0_rst 3>;
|
|
|
|
axp221: pmic@68 {
|
|
compatible = "x-powers,axp221";
|
|
reg = <0x68>;
|
|
|
|
/* ... */
|
|
};
|
|
};
|