Add bindings for spi-virtio based on virtio-device, reflecting what already exists for gpio-virtio and i2c-virtio. A node using the bindings is not used to instantiate the device, which is registered by the transport (e.g.: virtio-mmio), but to define its properties and establish dependencies with other nodes.
Add the new bindings inside the MAINTAINERS file. Signed-off-by: Francesco Valla <[email protected]> --- .../devicetree/bindings/spi/spi-virtio.yaml | 53 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 54 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/spi-virtio.yaml b/Documentation/devicetree/bindings/spi/spi-virtio.yaml new file mode 100644 index 000000000000..5b8639dd2e1f --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-virtio.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/spi-virtio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Virtio SPI controller device + +maintainers: + - Francesco Valla <[email protected]> + +allOf: + - $ref: /schemas/spi/spi-controller.yaml# + - $ref: /schemas/virtio/virtio-device.yaml# + +description: + Virtio SPI controller device, see /schemas/virtio/virtio-device.yaml for + more details. + +properties: + $nodename: + const: spi + + compatible: + const: virtio,device2d + +required: + - compatible + +unevaluatedProperties: false + +examples: + - | + virtio@3000 { + compatible = "virtio,mmio"; + reg = <0x3000 0x100>; + interrupts = <41>; + + spi { + compatible = "virtio,device2d"; + + #address-cells = <1>; + #size-cells = <0>; + + sram@0 { + compatible = "microchip,mchp23k256"; + reg = <0>; + spi-max-frequency = <20000000>; + }; + }; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index 360977678f70..f91340fc6e7f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -29062,6 +29062,7 @@ VIRTIO SPI DRIVER M: Haixu Cui <[email protected]> L: [email protected] S: Maintained +F: Documentation/devicetree/bindings/spi/spi-virtio.yaml F: drivers/spi/spi-virtio.c F: include/uapi/linux/virtio_spi.h -- 2.55.0
