Re: [PATCH v8 2/2] dt-bindings: new binding for ps/2 gpio devices
From: Rob Herring <hidden>
Date: 2017-08-21 19:20:16
Also in:
linux-devicetree, lkml
On Mon, Aug 21, 2017 at 8:31 AM, Danilo Krummrich [off-list ref] wrote:
quoted hunk ↗ jump to hunk
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 | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 Documentation/devicetree/bindings/serio/ps2-gpio.txtdiff --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
Doesn't match the example.
+ - 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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