From 085594d8fd51379afd94f9b89fcce05ecab02d8d Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Fri, 5 Apr 2019 14:51:56 +0200 Subject: dts: update to v5.1-rc3 Signed-off-by: Sascha Hauer --- dts/Bindings/i2c/i2c-sun6i-p2wi.txt | 41 +++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 dts/Bindings/i2c/i2c-sun6i-p2wi.txt (limited to 'dts/Bindings/i2c/i2c-sun6i-p2wi.txt') diff --git a/dts/Bindings/i2c/i2c-sun6i-p2wi.txt b/dts/Bindings/i2c/i2c-sun6i-p2wi.txt new file mode 100644 index 0000000000..49df005334 --- /dev/null +++ b/dts/Bindings/i2c/i2c-sun6i-p2wi.txt @@ -0,0 +1,41 @@ + +* 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>; + + /* ... */ + }; + }; -- cgit v1.2.3