Based on kernel version 4.16.1. Page generated on 2018-04-09 11:52 EST.
1 2 * Allwinner P2WI (Push/Pull 2 Wire Interface) controller 3 4 Required properties : 5 6 - reg : Offset and length of the register set for the device. 7 - compatible : Should one of the following: 8 - "allwinner,sun6i-a31-p2wi" 9 - interrupts : The interrupt line connected to the P2WI peripheral. 10 - clocks : The gate clk connected to the P2WI peripheral. 11 - resets : The reset line connected to the P2WI peripheral. 12 13 Optional properties : 14 15 - clock-frequency : Desired P2WI bus clock frequency in Hz. If not set the 16 default frequency is 100kHz 17 18 A P2WI may contain one child node encoding a P2WI slave device. 19 20 Slave device properties: 21 Required properties: 22 - reg : the I2C slave address used during the initialization 23 process to switch from I2C to P2WI mode 24 25 Example: 26 27 p2wi@1f03400 { 28 compatible = "allwinner,sun6i-a31-p2wi"; 29 reg = <0x01f03400 0x400>; 30 interrupts = <0 39 4>; 31 clocks = <&apb0_gates 3>; 32 clock-frequency = <6000000>; 33 resets = <&apb0_rst 3>; 34 35 axp221: pmic@68 { 36 compatible = "x-powers,axp221"; 37 reg = <0x68>; 38 39 /* ... */ 40 }; 41 };