[PATCH v3 1/5] dt-bindings: spi: sun6i: add DT bindings for Allwinner R329/D1/R528/T113s SPI

[Icenowy Zheng]

在 2023-05-07星期日的 02:26 +0300，Maksim Kiselev写道：
> Listed above Allwinner SoCs has two SPI controllers. First is the
> regular
> SPI controller and the second one has additional functionality for
> MIPI-DBI Type C.
> 
> Add compatible strings for these controllers
> 
> Signed-off-by: Maksim Kiselev <bigunclemax at gmail.com>
> ---
>  .../devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml   | 7
> +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/allwinner,sun6i-
> a31-spi.yaml b/Documentation/devicetree/bindings/spi/allwinner,sun6i-
> a31-spi.yaml
> index de36c6a34a0f..807dde457e3b 100644
> --- a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-
> spi.yaml
> +++ b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-
> spi.yaml
> @@ -21,6 +21,7 @@ properties:
>      oneOf:
>        - const: allwinner,sun6i-a31-spi
>        - const: allwinner,sun8i-h3-spi
> +      - const: allwinner,sun50i-r329-spi
>        - items:
>            - enum:
>                - allwinner,sun8i-r40-spi
> @@ -28,6 +29,12 @@ properties:
>                - allwinner,sun50i-h616-spi
>                - allwinner,suniv-f1c100s-spi
>            - const: allwinner,sun8i-h3-spi
> +      - items:
> +          - enum:
> +              - allwinner,sun20i-d1-spi
> +              - allwinner,sun20i-d1-spi-dbi

In this case I will prefer to list all 4 compatibles if backward
compatibility is used:
"allwinner,sun20i-d1-spi-dbi", "allwinner-sun20i-d1-spi",
"allwinner,sun50i-r329-spi-dbi", "allwinner, sun50i-r329-spi", in case
if we were gaining support for either quirks of D1 controller or
SPI_DBI controllers.

> +              - allwinner,sun50i-r329-spi-dbi
> +          - const: allwinner,sun50i-r329-spi
>  
>    reg:
>      maxItems: 1