From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- .../devicetree/bindings/input/gpio-decoder.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/gpio-decoder.txt (limited to 'Documentation/devicetree/bindings/input/gpio-decoder.txt') diff --git a/Documentation/devicetree/bindings/input/gpio-decoder.txt b/Documentation/devicetree/bindings/input/gpio-decoder.txt new file mode 100644 index 000000000..14a77fb96 --- /dev/null +++ b/Documentation/devicetree/bindings/input/gpio-decoder.txt @@ -0,0 +1,23 @@ +* GPIO Decoder DT bindings + +Required Properties: +- compatible: should be "gpio-decoder" +- gpios: a spec of gpios (at least two) to be decoded to a number with + first entry representing the MSB. + +Optional Properties: +- decoder-max-value: Maximum possible value that can be reported by + the gpios. +- linux,axis: the input subsystem axis to map to (ABS_X/ABS_Y). + Defaults to 0 (ABS_X). + +Example: + gpio-decoder0 { + compatible = "gpio-decoder"; + gpios = <&pca9536 3 GPIO_ACTIVE_HIGH>, + <&pca9536 2 GPIO_ACTIVE_HIGH>, + <&pca9536 1 GPIO_ACTIVE_HIGH>, + <&pca9536 0 GPIO_ACTIVE_HIGH>; + linux,axis = <0>; /* ABS_X */ + decoder-max-value = <9>; + }; -- cgit v1.2.3