linux-kernel - Re: [PATCH v17 03/21] dt-bindings: mediatek: add ethdr definition for mt8195

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Message-ID: <b699a15ae2e810e20d7c388bc347f57d0a951513.camel@pengutronix.de>
Date:   Mon, 25 Apr 2022 11:54:53 +0200
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     "Nancy.Lin" <nancy.lin@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        wim@...ux-watchdog.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, linux@...ck-us.net
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        "jason-jh . lin" <jason-jh.lin@...iatek.com>,
        Yongqiang Niu <yongqiang.niu@...iatek.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org, llvm@...ts.linux.dev,
        singo.chang@...iatek.com, srv_heupstream@...iatek.com,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v17 03/21] dt-bindings: mediatek: add ethdr definition
 for mt8195

Hi Nancy,

On Sa, 2022-04-16 at 10:07 +0800, Nancy.Lin wrote:
> Add vdosys1 ETHDR definition.
> 
> Signed-off-by: Nancy.Lin <nancy.lin@...iatek.com>
> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---
>  .../display/mediatek/mediatek,ethdr.yaml      | 158 ++++++++++++++++++
>  1 file changed, 158 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,ethdr.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,ethdr.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,ethdr.yaml
> new file mode 100644
> index 000000000000..e8303c28a361
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,ethdr.yaml
> @@ -0,0 +1,158 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,ethdr.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek Ethdr Device Tree Bindings
> +
> +maintainers:
> +  - Chun-Kuang Hu <chunkuang.hu@...nel.org>
> +  - Philipp Zabel <p.zabel@...gutronix.de>
> +
> +description: |
> +  ETHDR is designed for HDR video and graphics conversion in the external display path.
> +  It handles multiple HDR input types and performs tone mapping, color space/color
> +  format conversion, and then combine different layers, output the required HDR or
> +  SDR signal to the subsequent display path. This engine is composed of two video
> +  frontends, two graphic frontends, one video backend and a mixer. ETHDR has two
> +  DMA function blocks, DS and ADL. These two function blocks read the pre-programmed
> +  registers from DRAM and set them to HW in the v-blanking period.
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: mediatek,mt8195-disp-ethdr
> +  reg:
> +    maxItems: 7
> +  reg-names:
> +    items:
> +      - const: mixer
> +      - const: vdo_fe0
> +      - const: vdo_fe1
> +      - const: gfx_fe0
> +      - const: gfx_fe1
> +      - const: vdo_be
> +      - const: adl_ds
> +  interrupts:
> +    minItems: 1
> +  iommus:
> +    description: The compatible property is DMA function blocks.
> +      Should point to the respective IOMMU block with master port as argument,
> +      see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for
> +      details.
> +    minItems: 1
> +    maxItems: 2
> +  clocks:
> +    items:
> +      - description: mixer clock
> +      - description: video frontend 0 clock
> +      - description: video frontend 1 clock
> +      - description: graphic frontend 0 clock
> +      - description: graphic frontend 1 clock
> +      - description: video backend clock
> +      - description: autodownload and menuload clock
> +      - description: video frontend 0 async clock
> +      - description: video frontend 1 async clock
> +      - description: graphic frontend 0 async clock
> +      - description: graphic frontend 1 async clock
> +      - description: video backend async clock
> +      - description: ethdr top clock
> +  clock-names:
> +    items:
> +      - const: mixer
> +      - const: vdo_fe0
> +      - const: vdo_fe1
> +      - const: gfx_fe0
> +      - const: gfx_fe1
> +      - const: vdo_be
> +      - const: adl_ds
> +      - const: vdo_fe0_async
> +      - const: vdo_fe1_async
> +      - const: gfx_fe0_async
> +      - const: gfx_fe1_async
> +      - const: vdo_be_async
> +      - const: ethdr_top
> +  power-domains:
> +    maxItems: 1
> +  resets:
> +    maxItems: 5

Please add a reset-names property and name these resets.

regards
Philipp