Re: [PATCH 1/2] dt-bindings: display: panel: add Ilitek ILI7807S panel controller

[Dmitry Baryshkov]

On Wed, May 20, 2026 at 06:24:20PM +0530, Arpit Saini wrote:
> Hi Dmitry,
> 
> On 5/18/2026 9:53 PM, Dmitry Baryshkov wrote:
> > On Mon, May 18, 2026 at 04:34:12PM +0530, Arpit Saini wrote:
> > > ILI7807S is a DSI display controller used to drive MIPI-DSI panels.
> > > The DLC DLC0697 1080x1920 LCD panel is based on this controller.
> > > 
> > > The panel requires a reset GPIO, backlight enable GPIO, I/O voltage
> > > supply (vddi), positive LCD bias supply (avdd) and negative LCD bias
> > > supply (avee). The panel operates in video burst mode with four data
> > > lanes using RGB888 pixel format.
> > > 
> > > Signed-off-by: Arpit Saini <arpit.saini@xxxxxxxxxxxxxxxx>
> > > ---
> > >   .../bindings/display/panel/ilitek,ili7807s.yaml    | 80 ++++++++++++++++++++++
> > >   MAINTAINERS                                        |  7 ++
> > >   2 files changed, 87 insertions(+)
> > > 
> > > diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili7807s.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili7807s.yaml
> > > new file mode 100644
> > > index 000000000000..93c511d03c00
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili7807s.yaml
> > > @@ -0,0 +1,80 @@
> > > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/display/panel/ilitek,ili7807s.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Ilitek ILI7807S-based DSI panels
> > > +
> > > +maintainers:
> > > +  - Arpit Saini <arpit.saini@xxxxxxxxxxxxxxxx>
> > > +
> > > +allOf:
> > > +  - $ref: panel-common.yaml#
> > > +
> > > +properties:
> > > +  compatible:
> > > +    items:
> > > +      - enum:
> > > +          - dlc,dlc0697
> > > +      - const: ilitek,ili7807s
> > > +
> > > +  reg:
> > > +    maxItems: 1
> > > +    description: DSI virtual channel
> > > +
> > > +  reset-gpios: true
> > > +
> > > +  backlight-en-gpios:
> > > +    description: Backlight enable GPIO (active high)
> > 
> > Is this actual GPIO or the GPIO-controlled supply?
> > 
> Addressed here https://lore.kernel.org/all/dd065ccd-d7cb-45b5-8733-64b4f6571b3d@xxxxxxxxxxxxxxxx/

It's not. Or, from your description, I can assume that it is a PWM
controller external to the panel. Please model it accordingly. I assume
there is no 'backlight-en' pin on the panel connector.

-- 
With best wishes
Dmitry