On Tue, Dec 31, 2019 at 06:35:25PM +0530, Jagan Teki wrote:
> The MIPI DSI PHY controller on Allwinner R40 is similar
> on the one on A31.
>
> Add R40 compatible and append A31 compatible as fallback.
>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
> Changes for v3:
> - update the binding in new yaml format
>
>  .../devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml   | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml b/Documentation/devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml
> index 8841938050b2..0c283fe79402 100644
> --- a/Documentation/devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml
> +++ b/Documentation/devicetree/bindings/phy/allwinner,sun6i-a31-mipi-dphy.yaml
> @@ -18,6 +18,7 @@ properties:
>      oneOf:
>        - const: allwinner,sun6i-a31-mipi-dphy
>        - items:
> +          - const: allwinner,sun8i-r40-mipi-dphy
>            - const: allwinner,sun50i-a64-mipi-dphy
>            - const: allwinner,sun6i-a31-mipi-dphy

This isn't doing what you say it does.

Here you're stating that there's two valid values, one that is a
single element allwinner,sun6i-a31-mipi-dphy, and another which is a
list of three elements allwinner,sun8i-r40-mipi-dphy,
allwinner,sun50i-a64-mipi-dphy and allwinner,sun6i-a31-mipi-dphy, in
that order.

Did you run make dtbs_check and dt_bindings_check?

Maxime