The PS/2 gpio device binding defines the gpio pins (data and clock) as well as the interrupt which should be used to drive the ps/2 bus. It is expected to get an interrupt on the falling edge of the clock line.
Also it can be configured whether the host should support writing to the device. Signed-off-by: Danilo Krummrich <[email protected]> --- .../devicetree/bindings/serio/ps2-gpio.txt | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 Documentation/devicetree/bindings/serio/ps2-gpio.txt diff --git a/Documentation/devicetree/bindings/serio/ps2-gpio.txt b/Documentation/devicetree/bindings/serio/ps2-gpio.txt new file mode 100644 index 000000000000..83e05ea05883 --- /dev/null +++ b/Documentation/devicetree/bindings/serio/ps2-gpio.txt @@ -0,0 +1,22 @@ +Device-Tree binding for ps/2 gpio device + +Required properties: + - compatible = "ps2-gpio" + - gpios: data and clock gpio + - interrupts: Should trigger on the falling edge of the clock line. + +Optional properties: + - write-enable: Indicates whether write function is provided + to serio device. Possibly providing the write fn will not work, because + of the tough timing requirements. + +Example nodes: + +ps2@0 { + compatible = "ps2-gpio"; + interrupt-parent = <&gpio>; + interrupts = <23 IRQ_TYPE_EDGE_FALLING>; + data-gpios = <&gpio 24 GPIO_ACTIVE_HIGH>; + clk-gpios = <&gpio 23 GPIO_ACTIVE_HIGH>; + write-enable; +}; -- 2.14.1
