[PATCH v2 3/9] dt-bindings: display: panel: Add bindings for NEC NL8048HL11 panel

[Rob Herring]

On Sat, Aug 10, 2019 at 5:10 PM Laurent Pinchart
<laurent.pinchart at ideasonboard.com> wrote:
>
> The NEC NL8048HL11 is a 10.4cm WVGA (800x480) panel with a 24-bit RGB
> parallel data interface and an SPI control interface.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> ---
> Changes since v1:
>
> - Convert to YAML
> ---
>  .../display/panel/nec,nl8048hl11.yaml         | 49 +++++++++++++++++++
>  1 file changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/nec,nl8048hl11.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/panel/nec,nl8048hl11.yaml b/Documentation/devicetree/bindings/display/panel/nec,nl8048hl11.yaml
> new file mode 100644
> index 000000000000..cc3d40975828
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/nec,nl8048hl11.yaml
> @@ -0,0 +1,49 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/nec,nl8048hl11.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NEC NL8048HL11 4.1" WVGA TFT LCD panel
> +
> +description:
> +  The NEC NL8048HL11 is a 4.1" WVGA TFT LCD panel with a 24-bit RGB parallel
> +  data interface and an SPI control interface.
> +
> +maintainers:
> +  - Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    const: nec,nl8048hl11
> +
> +  label: true
> +  reset-gpios: true
> +  port: true
> +
> +required:
> +  - compatible
> +  - reset-gpios
> +  - port
> +
> +additionalProperties: false
> +
> +examples:

Your example will fail on 'make dt_binding_check'...

> +  - |
> +    lcd_panel: panel {

SPI devices have to have a minimal SPI controller parent. Primarily
just #size-cells and #address-cells are needed.

'reg' is missing here too.

> +      compatible = "nec,nl8048hl11";
> +      spi-max-frequency = <10000000>;

This needs to be listed in properties ideally with some constraints.

> +
> +      reset-gpios = <&gpio7 7 GPIO_ACTIVE_LOW>;

And GPIO_ACTIVE_LOW. You have to add includes you need.

> +
> +      port {
> +        lcd_in: endpoint {
> +          remote-endpoint = <&dpi_out>;
> +        };
> +      };
> +    };
> +
> +...
> --
> Regards,
>
> Laurent Pinchart
>