linux-kernel - Re: [PATCH v6 09/16] dt-bindings: media: mediatek: mdp3: add component STITCH for MT8195

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Date:   Mon, 25 Sep 2023 11:09:53 -0500
From:   Rob Herring <robh@...nel.org>
To:     Moudy Ho <moudy.ho@...iatek.com>
Cc:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 09/16] dt-bindings: media: mediatek: mdp3: add
 component STITCH for MT8195

On Fri, Sep 22, 2023 at 03:21:09PM +0800, Moudy Ho wrote:
> Add the fundamental hardware configuration of component STITCH,

STITCH? You mean TCC?

> which is controlled by MDP3 on MT8195.
> 
> Signed-off-by: Moudy Ho <moudy.ho@...iatek.com>
> ---
>  .../bindings/media/mediatek,mdp3-tcc.yaml     | 60 +++++++++++++++++++
>  1 file changed, 60 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/mediatek,mdp3-tcc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/mediatek,mdp3-tcc.yaml b/Documentation/devicetree/bindings/media/mediatek,mdp3-tcc.yaml
> new file mode 100644
> index 000000000000..245e2134c74a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/mediatek,mdp3-tcc.yaml
> @@ -0,0 +1,60 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/mediatek,mdp3-tcc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek Media Data Path 3 TCC
> +
> +maintainers:
> +  - Matthias Brugger <matthias.bgg@...il.com>
> +
> +description:
> +  One of Media Data Path 3 (MDP3) components used to support
> +  HDR gamma curve conversion HDR displays.

Please say what the block does.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt8195-mdp3-tcc
> +
> +  reg:
> +    maxItems: 1
> +
> +  mediatek,gce-client-reg:
> +    description:
> +      The register of display function block to be set by gce. There are 4 arguments,
> +      such as gce node, subsys id, offset and register size. The subsys id that is
> +      mapping to the register of display function blocks is defined in the gce header
> +      include/dt-bindings/gce/<chip>-gce.h of each chips.
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    items:
> +      items:
> +        - description: phandle of GCE
> +        - description: GCE subsys id
> +        - description: register offset
> +        - description: register size
> +    maxItems: 1
> +
> +  clocks:
> +    minItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - mediatek,gce-client-reg
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/mt8195-clk.h>
> +    #include <dt-bindings/gce/mt8195-gce.h>
> +
> +    display@...0b000 {
> +        compatible = "mediatek,mt8195-mdp3-tcc";
> +        reg = <0x1400b000 0x1000>;
> +        mediatek,gce-client-reg = <&gce1 SUBSYS_1400XXXX 0xb000 0x1000>;
> +        clocks = <&vppsys0 CLK_VPP0_MDP_TCC>;
> +    };
> -- 
> 2.18.0
>