linux-kernel - Re: [PATCH v1 1/2] dt-bindings: display: panel: document Atrix 4G and Droid X2 DSI panel

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Message-ID: <CAPVz0n1hBof7_eB6D39zZd5EfC2dL5-Ngf0ja7+kkcwQnnr7Mg@mail.gmail.com>
Date: Tue, 27 Jan 2026 08:26:32 +0200
From: Svyatoslav Ryhel <clamor95@...il.com>
To: Conor Dooley <conor@...nel.org>
Cc: Neil Armstrong <neil.armstrong@...aro.org>, 
	Jessica Zhang <jessica.zhang@....qualcomm.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/2] dt-bindings: display: panel: document Atrix 4G and
 Droid X2 DSI panel

пн, 26 січ. 2026 р. о 22:45 Conor Dooley <conor@...nel.org> пише:
>
> On Sun, Jan 25, 2026 at 03:19:03PM +0200, Svyatoslav Ryhel wrote:
> > Atrix 4G and Droid X2 use the same 540x960 DSI video mode panel. Exact
> > panel vendor and model are unknown hence generic compatible is used based
> > on board name it is used with.
> >
> > Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
> > ---
> >  .../display/panel/motorola,mot-panel.yaml     | 68 +++++++++++++++++++
> >  1 file changed, 68 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/display/panel/motorola,mot-panel.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/display/panel/motorola,mot-panel.yaml b/Documentation/devicetree/bindings/display/panel/motorola,mot-panel.yaml
> > new file mode 100644
> > index 000000000000..2326a83bc405
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/panel/motorola,mot-panel.yaml
> > @@ -0,0 +1,68 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/display/panel/motorola,mot-panel.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Atrix 4G and Droid X2 DSI Display Panel
> > +
> > +maintainers:
> > +  - Svyatoslav Ryhel <clamor95@...il.com>
> > +
> > +description:
> > +  Atrix 4G and Droid X2 use the same 540x960 DSI video mode panel. Exact
> > +  panel vendor and model are unknown hence generic compatible is used.
> > +
> > +allOf:
> > +  - $ref: panel-common.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - const: motorola,mot-panel
>
> What's a "mot" panel? If that's short for motorola, wouldn't it be
> better to conjure up something at least more specific to these
> particular users? The commit message has some info, but I still dunno
> where "mot" comes from.
> Seems okay otherwise..
>

"Mot" is how motorola called tegra20 board files which were base for
Atrix 4G and Droid X2 in their downstream sources, specifically
board-mot-panel.c. Since both devices use the same panel I used board
name. Hopefully, at come point I will be able to name it properly.

I have device trees for both devices prepared and I will submit them shortly.

> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  vdd-supply:
> > +    description: Regulator for main power supply.
> > +
> > +  vddio-supply:
> > +    description: Regulator for 1.8V IO power supply.
> > +
> > +  backlight: true
> > +  reset-gpios: true
> > +  port: true
> > +
> > +required:
> > +  - compatible
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/gpio/gpio.h>
> > +
> > +    dsi {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        panel@0 {
> > +            compatible = "motorola,mot-panel";
> > +            reg = <0>;
> > +
> > +            reset-gpios = <&gpio 35 GPIO_ACTIVE_LOW>;
> > +
> > +            vdd-supply = <&vdd_5v0_panel>;
> > +            vddio-supply = <&vdd_1v8_vio>;
> > +
> > +            backlight = <&backlight>;
> > +
> > +            port {
> > +                panel_in: endpoint {
> > +                    remote-endpoint = <&dsi_out>;
> > +                };
> > +            };
> > +        };
> > +    };
> > +...
> > --
> > 2.51.0
> >