GPIO bitbanged Wiegand controller requires definitions of GPIO lines to be used on top of the common Wiegand properties. Wiegand utilizes two such lines - D0(low data line) and D1(high data line). Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Signed-off-by: Martin Zaťovič <m.zatovic1@xxxxxxxxx> --- .../bindings/wiegand/wiegand-gpio.yaml | 51 +++++++++++++++++++ MAINTAINERS | 5 ++ 2 files changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml diff --git a/Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml b/Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml new file mode 100644 index 000000000000..df28929f6dae --- /dev/null +++ b/Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/wiegand/wiegand-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO bitbanged Wiegand interface devicetree bindings + +maintainers: + - Martin Zaťovič <m.zatovic1@xxxxxxxxx> + +description: + This represents the GPIO lines used for bit-banged Wiegand on dedicated GPIO + lines. + +allOf: + - $ref: /schemas/wiegand/wiegand-controller.yaml# + +properties: + compatible: + const: wiegand-gpio + + data-hi-gpios: + description: GPIO used as Wiegands data-hi line. + maxItems: 1 + + data-lo-gpios: + description: GPIO used as Wiegands data-lo line. + maxItems: 1 + +required: + - compatible + - data-hi-gpios + - data-lo-gpios + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + wiegand@f00 { + compatible = "wiegand-gpio"; + pulse-len-us = <50>; + interval-len-us = <2000>; + frame-gap-us = <2000>; + data-lo-gpios = <&gpio2 6 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + data-hi-gpios = <&gpio2 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; + + /* devices */ + }; diff --git a/MAINTAINERS b/MAINTAINERS index 23a67b32f095..91e573466d6b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22519,6 +22519,11 @@ F: Documentation/devicetree/bindings/wiegand/wiegand-controller.yaml F: drivers/wiegand/wiegand.c F: include/linux/wiegand.h +WIEGAND GPIO BITBANG DRIVER +M: Martin Zaťovič <m.zatovic1@xxxxxxxxx> +S: Maintained +F: Documentation/devicetree/bindings/wiegand/wiegand-gpio.yaml + WIIMOTE HID DRIVER M: David Rheinsberg <david.rheinsberg@xxxxxxxxx> L: linux-input@xxxxxxxxxxxxxxx -- 2.39.2
