new file mode 100644
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/gpio-mux-input.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: GPIO input multiplexer
+
+maintainers:
+ - Mauri Sandberg <sandberg@mailfence.com>
+
+description: |
+ A generic GPIO based input multiplexer
+
+ This driver uses mux-controller to drive the multiplexer.
+
+ For consumer use see gpio.txt.
+
+properties:
+ compatible:
+ enum:
+ - gpio-mux-input
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+
+ pin-gpios:
+ description: |
+ The GPIO pin used the output from the multiplexer
+
+required:
+ - compatible
+ - gpio-controller
+ - "#gpio-cells"
+ - pin-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ gpio2: key-mux1 {
+ compatible = "gpio-mux-input";
+ mux-controls = <&mux>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ // GPIOs used by this node, mux output pin
+ pin-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>; /* 1y */
+ };
+
+...
Add documentation for a general GPIO multiplexer. Signed-off-by: Mauri Sandberg <sandberg@mailfence.com> --- .../bindings/gpio/gpio-mux-input.yaml | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-mux-input.yaml