Messages in this thread Patch in this message | | | From | Danilo Krummrich <> | Subject | [PATCH v8 2/2] dt-bindings: new binding for ps/2 gpio devices | Date | Mon, 21 Aug 2017 15:31:12 +0200 |
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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 <danilokrummrich@dk-develop.de> --- .../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
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