Re: [PATCH v2 2/2] dt-bindings: one file of all simple DSI panels

[Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>]

Le jeu. 2 janv. 2020 à 11:17, Sam Ravnborg <sam@xxxxxxxxxxxx> a écrit :
>
> To complement panel-simple.yaml, create panel-simple-dsi.yaml.
> panel-simple-dsi-yaml are for all simple DSP panels with a single
> power-supply and optional backlight / enable GPIO.
>
> Migrate panasonic,vvx10f034n00 over to the new file.
>
> The objectives with one file for all the simple DSI panels are:
>     - Make it simpler to add bindings for simple DSI panels
>     - Keep the number of bindings file lower
>     - Keep the binding documentation for simple DSI panels more consistent
>
> Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
> Cc: Rob Herring <robh@xxxxxxxxxx>
> Cc: Maxime Ripard <mripard@xxxxxxxxxx>
> Cc: Yannick Fertre <yannick.fertre@xxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Daniel Vetter <daniel@xxxxxxxx>
> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
> ---
>  .../display/panel/panasonic,vvx10f034n00.txt  | 20 ------
>  .../display/panel/panel-simple-dsi.yaml       | 67 +++++++++++++++++++
>  2 files changed, 67 insertions(+), 20 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/display/panel/panasonic,vvx10f034n00.txt
>  create mode 100644 Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/panel/panasonic,vvx10f034n00.txt b/Documentation/devicetree/bindings/display/panel/panasonic,vvx10f034n00.txt
> deleted file mode 100644
> index 37dedf6a6702..000000000000
> --- a/Documentation/devicetree/bindings/display/panel/panasonic,vvx10f034n00.txt
> +++ /dev/null
> @@ -1,20 +0,0 @@
> -Panasonic 10" WUXGA TFT LCD panel
> -
> -Required properties:
> -- compatible: should be "panasonic,vvx10f034n00"
> -- reg: DSI virtual channel of the peripheral
> -- power-supply: phandle of the regulator that provides the supply voltage
> -
> -Optional properties:
> -- backlight: phandle of the backlight device attached to the panel
> -
> -Example:
> -
> -       mdss_dsi@fd922800 {
> -               panel@0 {
> -                       compatible = "panasonic,vvx10f034n00";
> -                       reg = <0>;
> -                       power-supply = <&vreg_vsp>;
> -                       backlight = <&lp8566_wled>;
> -               };
> -       };
> diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml
> new file mode 100644
> index 000000000000..05c52390269e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/panel-simple-dsi.yaml
> @@ -0,0 +1,67 @@
> +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/panel-simple-dsi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Simple DSI panels with a single power-supply
> +
> +maintainers:
> +  - Thierry Reding <thierry.reding@xxxxxxxxx>
> +  - Sam Ravnborg <sam@xxxxxxxxxxxx>
> +
> +description: |
> +  This binding file is a collection of the DSI panels that
> +  requires only a single power-supply.
> +  There are optionally a backlight and an enable GPIO.
> +  The panel may use an OF graph binding for the association to the display,
> +  or it may be a direct child node of the display.
> +
> +  If the panel is more advanced a dedicated binding file is required.
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +
> +  compatible:
> +    enum:
> +    # compatible must be listed in alphabetical order, ordered by compatible.
> +    # The description in the comment is mandatory for each compatible.
> +
> +    # Panasonic 10" WUXGA TFT LCD panel
> +    - panasonic,vvx10f034n00

Hi Sam,

I have tested your patch with these 2 dsi panels:
# Orise Tech OTM8009A is a 3.97" 480x800 TFT LCD
  - orisetech,otm8009a
 # Raydium Semiconductor Corporation RM68200 is a 5.5" 720x1280 TFT LCD
   - raydium,rm68200

It is close to be fine for me but I have minors comments below.

Benjamin

> +
> +  reg:
> +    maxItems: 1
> +    description: DSI virtual channel
> +
> +  backlight: true
> +  enable-gpios: true
> +  port: true
> +  power-supply: true

add reset-gpios: true to support orisetech panel

> +
> +additionalProperties: false
> +
> +required:
> +  - compatible
> +  - power-supply

power-supply should optional

> +  - reg
> +
> +examples:
> +  - |
> +    mdss_dsi@fd922800 {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      panel@0 {
> +        compatible = "panasonic,vvx10f034n00";
> +        reg = <0>;
> +        power-supply = <&vcc_lcd_reg>;
> +
> +        port {
> +          panel: endpoint {
> +            remote-endpoint = <&ltdc_out>;
> +          };
> +        };
> +      };
> +    };
> --
> 2.20.1
>
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