linux-kernel - Re: [PATCH v2 1/4] media: dt-bindings: Document Renesas RZ/G2L CSI-2 block

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Date:   Thu, 8 Sep 2022 13:39:55 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Jacopo Mondi <jacopo@...ndi.org>,
        Niklas Söderlund <niklas.soderlund@...natech.se>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Prabhakar <prabhakar.csengg@...il.com>,
        Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [PATCH v2 1/4] media: dt-bindings: Document Renesas RZ/G2L CSI-2
 block

On 06/09/2022 01:04, Lad Prabhakar wrote:
> Document the CSI-2 block which is part of CRU found in Renesas
> RZ/G2L (and alike) SoCs.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
> ---
> v1 -> v2
> * Dropped media prefix from subject
> * Renamed node name csi20 -> csi
> * Used 4 spaces for indentation in example node
> * Dropped reset-names and interrupt-names properties
> * Dropped oneOf from compatible
> * Included RB tag from Laurent
> 
> RFC v2 -> v1
> * Fixed review comments pointed by Rob and Jacopo.
> 
> RFC v1 -> RFC v2
> * New patch
> ---
>  .../bindings/media/renesas,rzg2l-csi2.yaml    | 140 ++++++++++++++++++
>  1 file changed, 140 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> new file mode 100644
> index 000000000000..79beace4dec2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-csi2.yaml
> @@ -0,0 +1,140 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright (C) 2022 Renesas Electronics Corp.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/renesas,rzg2l-csi2.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas RZ/G2L (and alike SoC's) MIPI CSI-2 receiver
> +
> +maintainers:
> +  - Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> +
> +description:
> +  The CSI-2 receiver device provides MIPI CSI-2 capabilities for the Renesas RZ/G2L
> +  (and alike SoCs). MIPI CSI-2 is part of the CRU block which is used in conjunction
> +  with the Image Processing module, which provides the video capture capabilities.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - renesas,r9a07g044-csi2       # RZ/G2{L,LC}
> +          - renesas,r9a07g054-csi2       # RZ/V2L
> +      - const: renesas,rzg2l-csi2
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: Internal clock for connecting CRU and MIPI
> +      - description: CRU Main clock
> +      - description: CPU Register access clock
> +
> +  clock-names:
> +    items:
> +      - const: sysclk
> +      - const: vclk
> +      - const: pclk

One more: drop the "clk" suffixes. Remaining names could be made a bit
more readable.


Best regards,
Krzysztof