42 lines
1.1 KiB
Plaintext
42 lines
1.1 KiB
Plaintext
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* Allwinner P2WI (Push/Pull 2 Wire Interface) controller
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Required properties :
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- reg : Offset and length of the register set for the device.
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- compatible : Should one of the following:
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- "allwinner,sun6i-a31-p2wi"
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- interrupts : The interrupt line connected to the P2WI peripheral.
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- clocks : The gate clk connected to the P2WI peripheral.
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- resets : The reset line connected to the P2WI peripheral.
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Optional properties :
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- clock-frequency : Desired P2WI bus clock frequency in Hz. If not set the
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default frequency is 100kHz
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A P2WI may contain one child node encoding a P2WI slave device.
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Slave device properties:
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Required properties:
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- reg : the I2C slave address used during the initialization
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process to switch from I2C to P2WI mode
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Example:
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p2wi@01f03400 {
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compatible = "allwinner,sun6i-a31-p2wi";
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reg = <0x01f03400 0x400>;
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interrupts = <0 39 4>;
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clocks = <&apb0_gates 3>;
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clock-frequency = <6000000>;
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resets = <&apb0_rst 3>;
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axp221: pmic@68 {
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compatible = "x-powers,axp221";
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reg = <0x68>;
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/* ... */
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};
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};
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