linux-kernel - Re: [PATCH v12 05/16] dt-bindings: display: mediatek: merge: add additional prop for mt8195

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Message-ID: <CAAOTY__cyFB6VyKFUZsy+-9+Nz7QTR4QiGUXQApOdiFXQESi4g@mail.gmail.com>
Date:   Wed, 3 Nov 2021 06:54:14 +0800
From:   Chun-Kuang Hu <chunkuang.hu@...nel.org>
To:     "jason-jh.lin" <jason-jh.lin@...iatek.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Fei Shao <fshao@...omium.org>,
        Moudy Ho <moudy.ho@...iatek.com>, roy-cw.yeh@...iatek.com,
        Fabien Parent <fparent@...libre.com>,
        Yongqiang Niu <yongqiang.niu@...iatek.com>,
        Nancy Lin <nancy.lin@...iatek.com>, singo.chang@...iatek.com,
        DTML <devicetree@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v12 05/16] dt-bindings: display: mediatek: merge: add
 additional prop for mt8195

Hi, Jason:

jason-jh.lin <jason-jh.lin@...iatek.com> 於 2021年10月26日 週二 下午11:59寫道：
>
> add MERGE additional properties description for mt8195:
> 1. async clock
> 2. fifo setting enable
> 3. reset controller

Reviewed-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>

>
> Signed-off-by: jason-jh.lin <jason-jh.lin@...iatek.com>
> ---
>  .../display/mediatek/mediatek,merge.yaml      | 38 +++++++++++++++++++
>  1 file changed, 38 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,merge.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,merge.yaml
> index 75beeb207ceb..614721bdbf73 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,merge.yaml
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,merge.yaml
> @@ -36,8 +36,28 @@ properties:
>        Documentation/devicetree/bindings/power/power-domain.yaml for details.
>
>    clocks:
> +    maxItems: 2
>      items:
>        - description: MERGE Clock
> +      - description: MERGE Async Clock
> +          Controlling the synchronous process between MERGE and other display
> +          function blocks cross clock domain.
> +
> +  clock-names:
> +    maxItems: 2
> +    items:
> +      - const: merge
> +      - const: merge_async
> +
> +  mediatek,merge-fifo-en:
> +    description:
> +      The setting of merge fifo is mainly provided for the display latency
> +      buffer to ensure that the back-end panel display data will not be
> +      underrun, a little more data is needed in the fifo.
> +      According to the merge fifo settings, when the water level is detected
> +      to be insufficient, it will trigger RDMA sending ultra and preulra
> +      command to SMI to speed up the data rate.
> +    type: boolean
>
>    mediatek,gce-client-reg:
>      description:
> @@ -50,6 +70,11 @@ properties:
>      $ref: /schemas/types.yaml#/definitions/phandle-array
>      maxItems: 1
>
> +  resets:
> +    description: reset controller
> +      See Documentation/devicetree/bindings/reset/reset.txt for details.
> +    maxItems: 1
> +
>  required:
>    - compatible
>    - reg
> @@ -67,3 +92,16 @@ examples:
>          power-domains = <&spm MT8173_POWER_DOMAIN_MM>;
>          clocks = <&mmsys CLK_MM_DISP_MERGE>;
>      };
> +
> +    merge5: disp_vpp_merge5@...10000 {
> +        compatible = "mediatek,mt8195-disp-merge";
> +        reg = <0 0x1c110000 0 0x1000>;
> +        interrupts = <GIC_SPI 507 IRQ_TYPE_LEVEL_HIGH 0>;
> +        clocks = <&vdosys1 CLK_VDO1_VPP_MERGE4>,
> +                 <&vdosys1 CLK_VDO1_MERGE4_DL_ASYNC>;
> +        clock-names = "merge","merge_async";
> +        power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
> +        mediatek,gce-client-reg = <&gce1 SUBSYS_1c11XXXX 0x0000 0x1000>;
> +        mediatek,merge-fifo-en = <1>;
> +        resets = <&vdosys1 MT8195_VDOSYS1_SW0_RST_B_MERGE4_DL_ASYNC>;
> +    };
> --
> 2.18.0
>