linux-kernel - Re: [PATCH 1/2] dt-bindings: display: panel: add fannal,c3004

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Message-ID: <20230519-emerald-void-066fad80950a@spud>
Date:   Fri, 19 May 2023 17:41:27 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Paulo Pavacic <pavacic.p@...il.com>
Cc:     neil.armstrong@...aro.org, sam@...nborg.org, airlied@...il.com,
        daniel@...ll.ch, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: display: panel: add fannal,c3004

Hey Paulo,

On Fri, May 19, 2023 at 04:24:55PM +0200, Paulo Pavacic wrote:
> 
> Added fannal to vendor-prefixes and dt bindings for Fannal C3004.
> Fannal C3004 is a 480x800 MIPI DSI Panel which requires
> DCS initialization sequences with certain delays between certain
> commands.
> 
> Signed-off-by: Paulo Pavacic <pavacic.p@...il.com>
> ---
> v3 changelog:
>   - renamed yml file
>   - refactored yml file to describe fannal,c3004
>   - added matrix URI to MAINTAINERS
> v2 changelog:
>   - revised driver title, now describes purpose
>   - revised description, now describes hw
>   - revised maintainers, now has only 1 mail
>   - removed diacritics from commit/commit author
>   - properties/compatible is now enum
>   - compatible using only lowercase
>   - revised dts example
>   - modified MAINTAINERS in this commit (instead of driver commit)
>   - dt_bindings_check checked yml
>   - checkpatch warning fixed
> ---
>  .../bindings/display/panel/fannal,c3004.yaml  | 75 +++++++++++++++++++
>  .../devicetree/bindings/vendor-prefixes.yaml  |  2 +
>  MAINTAINERS                                   |  6 ++
>  3 files changed, 83 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/fannal,c3004.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/fannal,c3004.yaml b/Documentation/devicetree/bindings/display/panel/fannal,c3004.yaml
> new file mode 100644
> index 000000000000..a86b5ce02aa2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/fannal,c3004.yaml
> @@ -0,0 +1,75 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/fannal,c3004.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Fannal C3004 MIPI-DSI
> +
> +maintainers:
> +  - Paulo Pavacic <pavacic.p@...il.com>
> +
> +description: |
> +  Fannal C3004 is a 480x800 panel which requires DSI DCS
> +  initialization sequences.
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: fannal,c3004
> +
> +  reg: true

Are there no restrictions on the number of reg entries?

> +  reset-gpios: true

Can you put a blank line between properties please?

> +
> +  vdd-supply:
> +    description: power supply voltage
> +  vddio-supply:
> +    description: power supply voltage for IO
> +
> +  width-mm:
> +    description: physical panel width [mm]
> +  height-mm:
> +    description: physical panel height [mm]

Here and for the supplies too.

> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> index 82d39ab0231b..f962750f630a 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> @@ -462,6 +462,8 @@ patternProperties:
>      description: Facebook
>    "^fairphone,.*":
>      description: Fairphone B.V.
> +  "^fannal,.*":
> +    description: Fannal Electronics Co., Ltd

This needs to be split into a commit of its own.

Thanks,
Conor.

>    "^faraday,.*":
>      description: Faraday Technology Corporation
>    "^fastrax,.*":
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 5c22c828ab46..62374c8424b9 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -6427,6 +6427,12 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
>  F:	Documentation/devicetree/bindings/display/panel/ebbg,ft8719.yaml
>  F:	drivers/gpu/drm/panel/panel-ebbg-ft8719.c
>  
> +DRM DRIVER FOR FANNAL C3004373132019A
> +M:	Paulo Pavacic <pavacic.p@...il.com>
> +S:	Maintained
> +C:	matrix:r/mipi-dsi-bringup:matrix.org
> +F:	Documentation/devicetree/bindings/display/panel/panel-fannal,c3004.yaml
> +
>  DRM DRIVER FOR FARADAY TVE200 TV ENCODER
>  M:	Linus Walleij <linus.walleij@...aro.org>
>  S:	Maintained
> -- 
> 2.40.1
> 

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