Re: [PATCH v6 2/4] spi: ls7a: Add YAML schemas

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On Mon, Dec 28, 2020 at 10:59:39AM +0800, Qing Zhang wrote:
> Switch the DT binding to a YAML schema to enable the DT validation.
> 
> Reviewed-by: Huacai Chen <chenhuacai@xxxxxxxxxx>
> Signed-off-by: Qing Zhang <zhangqing@xxxxxxxxxxx>
> ---
> 
> v4:
> - fix warnings/errors about running 'make dt_binding_check'
> 
> v5:
> - remove num-chipelects
> 
> v6:
> - No changes
> 
> ---
>  .../devicetree/bindings/spi/loongson,spi-ls7a.yaml | 44 ++++++++++++++++++++++
>  1 file changed, 44 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/spi/loongson,spi-ls7a.yaml
> 
> diff --git a/Documentation/devicetree/bindings/spi/loongson,spi-ls7a.yaml b/Documentation/devicetree/bindings/spi/loongson,spi-ls7a.yaml
> new file mode 100644
> index 0000000..b90b28b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/loongson,spi-ls7a.yaml
> @@ -0,0 +1,44 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/loongson,spi-ls7a.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Loongson LS7A PCH SPI Controller
> +
> +maintainers:
> +  - Qing Zhang <zhangqing@xxxxxxxxxxx>
> +
> +description: |
> +  This controller can be found in Loongson-3 systems with LS7A PCH.

allOf:
  - $ref: spi-controller.yaml#

> +
> +properties:
> +  compatible:
> +    const: loongson,ls7a-spi
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    pci {
> +        #address-cells = <3>;
> +        #size-cells = <2>;
> +
> +        spi@16,0 {
> +            compatible = "pci0014,7a0b.0",
> +                             "pci0014,7a0b",
> +                             "pciclass088000",
> +                             "pciclass0800";

Doesn't match the schema. If this is on PCI bus, then the example is 
correct. Though you could drop some of the strings. And I think leading 
0s should be omitted. So 'pci14,7a0b'. But please double check that.

Rob



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