linux-kernel - Re: [PATCH v2 4/7] dt-bindings: display: mediatek: disp-tdshp: Add support for MT8196

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Message-ID: <e847cf85d4548e62230354cc44a155c5a583f4cd.camel@mediatek.com>
Date: Wed, 6 Aug 2025 06:50:09 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: "matthias.bgg@...il.com" <matthias.bgg@...il.com>, "tzimmermann@...e.de"
	<tzimmermann@...e.de>, "simona@...ll.ch" <simona@...ll.ch>,
	"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>, "AngeloGioacchino Del
 Regno" <angelogioacchino.delregno@...labora.com>,
	Jay Liu (刘博) <Jay.Liu@...iatek.com>,
	"airlied@...il.com" <airlied@...il.com>, "krzk+dt@...nel.org"
	<krzk+dt@...nel.org>, "robh@...nel.org" <robh@...nel.org>,
	"p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
	"maarten.lankhorst@...ux.intel.com" <maarten.lankhorst@...ux.intel.com>,
	"mripard@...nel.org" <mripard@...nel.org>, "hsinyi@...omium.org"
	<hsinyi@...omium.org>, "conor+dt@...nel.org" <conor+dt@...nel.org>,
	Yongqiang Niu (牛永强) <yongqiang.niu@...iatek.com>
CC: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 4/7] dt-bindings: display: mediatek: disp-tdshp: Add
 support for MT8196

On Sun, 2025-07-27 at 15:15 +0800, Jay Liu wrote:
> Add disp-tdshp hardware description for MediaTek MT8196 SoC
> 
> Signed-off-by: Jay Liu <jay.liu@...iatek.com>
> Signed-off-by: 20220315152503 created <jay.liu@...iatek.com>
> ---
>  .../display/mediatek/mediatek,disp-tdshp.yaml | 50 +++++++++++++++++++
>  1 file changed, 50 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,disp-tdshp.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp-tdshp.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp-tdshp.yaml
> new file mode 100644
> index 000000000000..3d95ecfc0d19
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp-tdshp.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,disp-tdshp.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek display 2D sharpness processor
> +
> +maintainers:
> +  - Chun-Kuang Hu <chunkuang.hu@...nel.org>
> +  - Philipp Zabel <p.zabel@...gutronix.de>
> +
> +description: |
> +  MediaTek display 2D sharpness processor, namely TDSHP, provides a
> +  operation used to adjust sharpness in display system.
> +  TDSHP device node must be siblings to the central MMSYS_CONFIG node.
> +  For a description of the MMSYS_CONFIG binding, see
> +  Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
> +  for details.
> +
> +properties:
> +  compatible:
> +      - enum:
> +          - mediatek,mt8196-disp-tdshp

Patch [3/7] tdshp driver depend on this compatible string, so patch [3/7] depend on patch [4/7].
The patch order is weird.
Usually the binding document is in front of a series then follow the driver.

Regards,
CK

> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        disp-tdshp@...e0000 {
> +            compatible = "mediatek,mt8196-disp-tdshp";
> +            reg = <0 0x321e0000 0 0x1000>;
> +            clocks = <&dispsys_config_clk 107>;
> +        };
> +    };