linux-kernel - Re: [PATCH 2/4] dt-bindings: display: panel: Add Himax HX83112B

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Message-ID: <wo7ws3nfpniavprg55e3qchgxj4v7shra526ag7nuab57s2lxz@n6jef2ljd46t>
Date: Tue, 25 Feb 2025 05:17:59 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Luca Weiss <luca@...aweiss.eu>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
	Neil Armstrong <neil.armstrong@...aro.org>, Jessica Zhang <quic_jesszhan@...cinc.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>, 
	Bjorn Andersson <andersson@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>, 
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 2/4] dt-bindings: display: panel: Add Himax HX83112B

On Mon, Feb 24, 2025 at 09:40:23PM +0100, Luca Weiss wrote:
> On 23-02-2025 7:25 p.m., Dmitry Baryshkov wrote:
> > On Sat, Feb 22, 2025 at 06:58:05PM +0100, Luca Weiss wrote:
> > > Himax HX83112B is a display driver IC used to drive LCD DSI panels.
> > > Describe it and the Fairphone 3 panel from DJN using it.
> > > 
> > > Signed-off-by: Luca Weiss <luca@...aweiss.eu>
> > > ---
> > >   .../bindings/display/panel/himax,hx83112b.yaml     | 75 ++++++++++++++++++++++
> > >   1 file changed, 75 insertions(+)
> > > 
> > > diff --git a/Documentation/devicetree/bindings/display/panel/himax,hx83112b.yaml b/Documentation/devicetree/bindings/display/panel/himax,hx83112b.yaml
> > > new file mode 100644
> > > index 0000000000000000000000000000000000000000..e6bd4b33d40be98e479d84617aea6d2af0df70e4
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/display/panel/himax,hx83112b.yaml
> > > @@ -0,0 +1,75 @@
> > > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/display/panel/himax,hx83112b.yaml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Himax HX83112B-based DSI display panels
> > > +
> > > +maintainers:
> > > +  - Luca Weiss <luca@...aweiss.eu>
> > > +
> > > +description:
> > > +  The Himax HX83112B is a generic DSI Panel IC used to control
> > > +  LCD panels.
> > > +
> > > +allOf:
> > > +  - $ref: panel-common.yaml#
> > > +
> > > +properties:
> > > +  compatible:
> > > +    contains:
> > > +      const: djn,fairphone-fp3-panel
> > 
> > Would you know a better name or ID for a panel?
> 
> Initially no, as mentioned on the cover letter.
> 
> But I dug a bit more in some other documents and found this number now:
> "98-03057-6598B-I"
> 
> This also somewhat matches the format of the Fairphone 4 panel from DJN:
> ("djn,9a-3r063-1102b").
> 
> So I'll change the compatible to "djn,98-03057-6598b-i" in the next
> revision.

Thanks!

> 
> Regards
> Luca
> 
> > 
> > > +
> > > +  reg:
> > > +    maxItems: 1
> > > +
> > > +  iovcc-supply:
> > > +    description: I/O voltage rail
> > > +
> > > +  vsn-supply:
> > > +    description: Positive source voltage rail
> > > +
> > > +  vsp-supply:
> > > +    description: Negative source voltage rail
> > > +
> > > +  port: true
> > > +
> > > +required:
> > > +  - compatible
> > > +  - reg
> > > +  - reset-gpios
> > > +  - iovcc-supply
> > > +  - vsn-supply
> > > +  - vsp-supply
> > > +  - port
> > > +
> > > +unevaluatedProperties: false
> > > +
> > > +examples:
> > > +  - |
> > > +    #include <dt-bindings/gpio/gpio.h>
> > > +
> > > +    dsi {
> > > +        #address-cells = <1>;
> > > +        #size-cells = <0>;
> > > +
> > > +        panel@0 {
> > > +            compatible = "djn,fairphone-fp3-panel";
> > > +            reg = <0>;
> > > +
> > > +            reset-gpios = <&tlmm 61 GPIO_ACTIVE_LOW>;
> > > +
> > > +            iovcc-supply = <&pm8953_l6>;
> > > +            vsn-supply = <&pmi632_lcdb_ncp>;
> > > +            vsp-supply = <&pmi632_lcdb_ldo>;
> > > +
> > > +            port {
> > > +                panel_in_0: endpoint {
> > > +                    remote-endpoint = <&dsi0_out>;
> > > +                };
> > > +            };
> > > +        };
> > > +    };
> > > +
> > > +...
> > > 
> > > -- 
> > > 2.48.1
> > > 
> > 
> 

-- 
With best wishes
Dmitry