linux-kernel - Re: [PATCH 1/6] dt-bindings: display: panel: Add another panel for RG35XX Plus (Rev6)

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Message-ID: <679118f3.050a0220.3628fd.4a9f@mx.google.com>
Date: Wed, 22 Jan 2025 10:12:33 -0600
From: Chris Morgan <macroalpha82@...il.com>
To: Hironori KIKUCHI <kikuchan98@...il.com>
Cc: linux-kernel@...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>,
	Paul Cercueil <paul@...pouillou.net>,
	Christophe Branchereau <cbranchereau@...il.com>,
	Ryan Walklin <ryan@...ttoast.com>, dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 1/6] dt-bindings: display: panel: Add another panel for
 RG35XX Plus (Rev6)

On Sun, Nov 24, 2024 at 05:02:12PM +0900, Hironori KIKUCHI wrote:
> This is a display panel used in the recent revision of the Anbernic
> RG35XX Plus, a handheld gaming device from Anbernic.
> It is 3.45 inches in size (diagonally) with a resolution of 640x480.
> 
> It has the same interface (pins and connector) as the panel of the former
> revision of RG35XX Plus, but they differ in their init-sequence. So add
> it as a new panel.
> 
> Signed-off-by: Hironori KIKUCHI <kikuchan98@...il.com>
> ---
>  .../anbernic,rg35xx-plus-rev6-panel.yaml      | 60 +++++++++++++++++++
>  1 file changed, 60 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/anbernic,rg35xx-plus-rev6-panel.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/anbernic,rg35xx-plus-rev6-panel.yaml b/Documentation/devicetree/bindings/display/panel/anbernic,rg35xx-plus-rev6-panel.yaml
> new file mode 100644
> index 00000000000..b60a4cf00f8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/anbernic,rg35xx-plus-rev6-panel.yaml
> @@ -0,0 +1,60 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/anbernic,rg35xx-plus-rev6-panel.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Anbernic RG35XX series (YLM-LBV0345001H-V2) 3.45" 640x480 24-bit IPS LCD panel
> +
> +maintainers:
> +  - Hironori KIKUCHI <kikuchan98@...il.com>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +properties:
> +  compatible:
> +    const: anbernic,rg35xx-plus-rev6-panel
> +
> +  reg:
> +    maxItems: 1
> +
> +  spi-3wire: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - port
> +  - power-supply
> +  - reset-gpios
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    spi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        panel@0 {
> +            compatible = "anbernic,rg35xx-plus-rev6-panel";
> +            reg = <0>;
> +
> +            spi-3wire;
> +            spi-max-frequency = <3125000>;
> +
> +            reset-gpios = <&pio 8 14 GPIO_ACTIVE_LOW>; // PI14
> +
> +            backlight = <&backlight>;
> +            power-supply = <&reg_lcd>;
> +
> +            port {
> +                endpoint {
> +                    remote-endpoint = <&tcon_lcd0_out_lcd>;
> +                };
> +            };
> +        };
> +    };
> -- 
> 2.47.0
> 

Though the documentation file will likely change (to newvision,nv3052c.yaml
if I understand correctly) do we know if "anbernic,rg35xx-plus-rev6-panel" is
an acceptable compatible string for this panel? I'd like to add it to a fixup
in U-Boot but can't proceed until the string is defined.

Thank you,
Chris