[PATCH v9 2/2] dt-bindings: new binding for ps/2 gpio devices
From: Danilo Krummrich <hidden>
Date: 2017-08-21 19:40:04
Also in:
linux-input, lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> --- .../devicetree/bindings/serio/ps2-gpio.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 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..7b7bc9cdf986
--- /dev/null
+++ b/Documentation/devicetree/bindings/serio/ps2-gpio.txt@@ -0,0 +1,23 @@ +Device-Tree binding for ps/2 gpio device + +Required properties: + - compatible = "ps2-gpio" + - data-gpios: the data pin + - clk-gpios: the clock pin + - 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
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