Re: [PATCH 1/2] drm/panel: Add DT bindings for Novatek NT35510-based panels

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Hi Linus.

On Wed, Dec 25, 2019 at 12:56:09PM +0100, Linus Walleij wrote:
> This adds device tree bindings for the Novatek NT35510-based
> family of panels. Since several such panels are in existence
> we define bindings common for all, and define the compatible
> string for one certain panel (Hydis HVA40WV1).
> 
> As other panels are discovered and investigated, we can add
> more compatibles to the binding.
> 
> Cc: Stephan Gerhold <stephan@xxxxxxxxxxx>
> Cc: devicetree@xxxxxxxxxxxxxxx
> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
> ---
>  .../display/panel/novatek-nt35510.yaml        | 53 +++++++++++++++++++
>  1 file changed, 53 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/novatek-nt35510.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/novatek-nt35510.yaml b/Documentation/devicetree/bindings/display/panel/novatek-nt35510.yaml
> new file mode 100644
> index 000000000000..a4a6b5adf15b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/novatek-nt35510.yaml
> @@ -0,0 +1,53 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/novatek-nt35510.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Novatek NT35510-based display panels
> +
> +maintainers:
> +  - Linus Walleij <linus.walleij@xxxxxxxxxx>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    const: hydis,hva40wv1
compatible fail to match filename - which is common practice.
And hydis is not a known vendor-prefix.


> +    description: This indicates the panel manufacturer of the panel
> +      that is in turn using the NT35510 panel driver. The compatible
> +      string determines how the NT35510 panel driver shall be configured
> +      to work with the indicated panel.
The description is just a general description of what compatible is used
for.
Please drop it as it does not provide anything specific for the panel.

	Sam

> +  reg: true
> +  reset-gpios: true
> +  vdd-supply:
> +     description: regulator that supplies the vdd voltage
> +  vddi-supply:
> +     description: regulator that supplies the vddi voltage
> +  backlight: true
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    dsi@a0351000 {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        panel {
> +            compatible = "hydis,hva40wv1";
> +            reg = <0>;
> +            vdd-supply = <&ab8500_ldo_aux4_reg>;
> +            vddi-supply = <&ab8500_ldo_aux6_reg>;
> +            reset-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;
> +            backlight = <&gpio_bl>;
> +        };
> +    };
> +
> +...
> -- 
> 2.21.0
> 
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