Re: [PATCH v2 1/4] dt-bindings: display: panel: Add Novatek NT37705

[Luca Weiss]

Hi Rob,

On Fri Sep 18, 2026 at 11:35 PM CEST, Rob Herring wrote:
> On Fri, Sep 18, 2026 at 04:40:04PM +0200, Luca Weiss wrote:
>> Novatek NT37705 is a display driver IC used to drive AMOLED DSI panels.
>> 
>> Describe it and the panel in the Fairphone (Gen. 6) (BJ631JHM-T71-D900
>> from BOE) using it.
>> 
>> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
>> Link: https://lore.kernel.org/r/81a3c207-4d8f-490f-8e2a-6f3f4c2acd35@xxxxxxxxxx/
>> Signed-off-by: Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
>> ---
>>  .../bindings/display/panel/novatek,nt37705.yaml    | 72 ++++++++++++++++++++++
>>  1 file changed, 72 insertions(+)
>> 
>> diff --git a/Documentation/devicetree/bindings/display/panel/novatek,nt37705.yaml b/Documentation/devicetree/bindings/display/panel/novatek,nt37705.yaml
>> new file mode 100644
>> index 000000000000..1c796599f6fc
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/display/panel/novatek,nt37705.yaml
>
> Did novatek,nt37705 get dropped as a compatible, but the filename 
> remains?

That's how himax,hx83112a.yaml and himax,hx83112b.yaml are as well,
which I have upstreamed before. I *really* don't have strong opinions
either way, but as in the email referred to in "Link:" the versions I
have upstreamed before have been accepted without issue, and even
discussion pointing in the way I have done things here.

>
>> @@ -0,0 +1,72 @@
>> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/display/panel/novatek,nt37705.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Novatek NT37705-based DSI display panels
>> +
>> +maintainers:
>> +  - Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
>> +
>> +description:
>> +  The Novatek NT37705 is a generic DSI Panel IC used to control AMOLED panels.
>> +
>> +allOf:
>> +  - $ref: panel-common.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    contains:
>
> As sashiko reports, "contains" is too loose.

Will fix, seems to also be an issue in the hx83112a/b yamls.

>
>> +      const: boe,bj631jhm-t71-d900
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  vddio-supply:
>> +    description: I/O voltage rail
>> +
>> +  dvdd-supply:
>> +    description: Digital voltage rail
>> +
>> +  vci-supply:
>> +    description: Analog voltage rail
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - reset-gpios
>> +  - vddio-supply
>> +  - dvdd-supply
>> +  - vci-supply
>> +  - port
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/gpio/gpio.h>
>> +
>> +    dsi {
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +
>> +        panel@0 {
>> +            compatible = "boe,bj631jhm-t71-d900";
>> +            reg = <0>;
>> +
>> +            reset-gpios = <&tlmm 12 GPIO_ACTIVE_LOW>;
>> +
>> +            vci-supply = <&vreg_l19b>;
>> +            vddio-supply = <&vreg_l9b>;
>> +            dvdd-supply = <&vreg_oled_dvdd_1p2>;
>> +
>> +            port {
>> +                panel_in_0: endpoint {
>> +                    remote-endpoint = <&dsi0_out>;
>> +                };
>> +            };
>> +        };
>> +    };
>> +
>> +...
>> 
>> -- 
>> 2.55.0
>>