Re: [PATCH RFC 1/2] dt-bindings: display: panel: Add bindings for Novatek NT51021

[Neil Armstrong <neil.armstrong@linaro.org>]

On 8/29/26 22:09, Nickolay Goppen wrote:
> Novatek NT51021 is a display driver IC that can drive DSI panel. It
> is also present in the BOE TV101WUM-NX0 video mode panel, which is a WUXGA
> panel with a resolution of 1200x1920 and 10.1 inches size. It is found in
> Xiaomi Mi Pad 4 Plus.
> 
> This patch adds the bindings for display driver for the IC, with support
> added for this BOE TV101WUM-NX0 WUXGA video mode panel.
> 
> Signed-off-by: Nickolay Goppen <setotau@mainlining.org>
> ---
>   .../bindings/display/panel/novatek,nt51021.yaml    | 93 ++++++++++++++++++++++
>   MAINTAINERS                                        |  5 ++
>   2 files changed, 98 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/novatek,nt51021.yaml b/Documentation/devicetree/bindings/display/panel/novatek,nt51021.yaml
> new file mode 100644
> index 000000000000..a3e4ed10e645
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/novatek,nt51021.yaml
> @@ -0,0 +1,93 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/novatek,nt51021.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Novatek NT51021 based DSI display Panels
> +
> +maintainers:
> +  - Nickolay Goppen <setotau@mainlining.org>
> +
> +description: |
> +  The NT51021 IC from Novatek is a generic DSI Panel IC used to drive dsi
> +  panels.
> +  Right now, support is added only for a BOE WUXGA LCD display panels with a
> +  resolution of 1200x1920. They are video mode DSI panels.
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - boe,tv101wum-nx0
> +          - boe,tv080wum-nx2
> +      - const: novatek,nt51021
> +    description: This indicates the panel manufacturer of the panel that is
> +      in turn using the NT51021 panel driver. This compatible string
> +      determines how the NT51021 panel driver is configured for the indicated
> +      panel. The novatek,nt51021 compatible shall always be provided as a fallback.
> +

You can drop the description entirely here.


> +  reg:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description: phandle of gpio for reset line - This should be 8mA, gpio
> +      can be configured using mux, pinctrl, pinctrl-names (active high)
> +
> +  vdd-supply:
> +    description: phandle of the regulator that provides the supply voltage
> +      for digital circuits
> +
> +  avdd-supply:
> +    description: phandle of the regulator that provides the supply voltage
> +      for analog circuits
> +
> +  havdd-supply:
> +    description: phandle of the regulator that provides the supply voltage
> +      for analog circuits
> +
> +  port: true
> +  backlight: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - vdd-supply
> +  - avdd-supply
> +  - havdd-supply
> +  - reset-gpios
> +  - port
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |+
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    dsi0 {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        panel@0 {
> +            compatible = "boe,tv101wum-nx0", "novatek,nt51021";
> +            reg = <0>;
> +            vdd-supply = <&lcd_pwr>;
> +            avdd-supply = <&lcd_pwr>;
> +            havdd-supply = <&lcd_pwr>;
> +
> +            backlight = <&i2c_backlight>;
> +            reset-gpios = <&tlmm 62 GPIO_ACTIVE_LOW>;
> +
> +            port {
> +                panel_in: endpoint {
> +                    remote-endpoint = <&dsi0_out>;
> +                };
> +            };
> +        };
> +    };
> +
> +...
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 7291238bc09f..6cbf9ee3fa9b 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -8354,6 +8354,11 @@ S:	Maintained
>   F:	Documentation/devicetree/bindings/display/panel/novatek,nt37801.yaml
>   F:	drivers/gpu/drm/panel/panel-novatek-nt37801.c
>   
> +DRM DRIVER FOR NOVATEK NT51021 PANELS
> +M:	Nickolay Goppen <setotau@mainlining.org>
> +S:	Maintained
> +F:	Documentation/devicetree/bindings/display/panel/novatek,nt51021.yaml
> +
>   DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS
>   M:	Lyude Paul <lyude@redhat.com>
>   M:	Danilo Krummrich <dakr@kernel.org>
> 

Move the MAINTAINERS change in a separate commit.

Neil