gpio-virtio represents a virtio GPIO controller and this patch adds binding for the same. The gpio-virtio subnode can be part of a virtio,mmio node and is based on its binding. Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx> --- Depends on: https://lore.kernel.org/lkml/7c716c2eb7ace5b5a560d8502af93101dbb53d24.1626170146.git.viresh.kumar@xxxxxxxxxx/ --- .../devicetree/bindings/gpio/gpio-virtio.yaml | 67 +++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-virtio.yaml diff --git a/Documentation/devicetree/bindings/gpio/gpio-virtio.yaml b/Documentation/devicetree/bindings/gpio/gpio-virtio.yaml new file mode 100644 index 000000000000..c813cdfd60fd --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-virtio.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/gpio-virtio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Virtio memory mapped GPIO controller + +maintainers: + - Viresh Kumar <viresh.kumar@xxxxxxxxxx> + +description: + Virtio GPIO controller, see /schemas/virtio/mmio.yaml for more details. + +allOf: + - $ref: /schemas/gpio/gpio.yaml# + +properties: + $nodename: + pattern: '^gpio-virtio@[0-9]+$' + + reg: + description: + The cell is the device ID of the GPIO device (VIRTIO_ID_GPIO) as per + dt-bindings/virtio/virtio_ids.h. + const: 41 + $ref: /schemas/virtio/mmio.yaml#/properties/reg + + gpio-controller: true + + "#gpio-cells": + const: 2 + + interrupt-controller: true + + "#interrupt-cells": + const: 2 + +required: + - reg + - gpio-controller + - "#gpio-cells" + +additionalProperties: false + +examples: + - | + #include <dt-bindings/virtio/virtio_ids.h> + + virtio@3000 { + compatible = "virtio,mmio"; + reg = <0x3000 0x100>; + interrupts = <41>; + + #address-cells = <1>; + #size-cells = <0>; + + gpio-virtio@0 { + reg = <VIRTIO_ID_GPIO>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + }; + }; + +... -- 2.31.1.272.g89b43f80a514
