linux-kernel - Re: [PATCH 4/4] arm64: dts: mediatek: mt8186: Add venc node

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Date:   Thu, 14 Dec 2023 12:52:46 +0200
From:   Eugen Hristev <eugen.hristev@...labora.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-mediatek@...ts.infradead.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kernel@...labora.com, tiffany.lin@...iatek.com,
        andrew-ct.chen@...iatek.com, matthias.bgg@...il.com,
        Kyrie Wu <kyrie.wu@...iatek.com>,
        Allen-KH Cheng <allen-kh.cheng@...iatek.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>
Subject: Re: [PATCH 4/4] arm64: dts: mediatek: mt8186: Add venc node

On 12/14/23 12:50, AngeloGioacchino Del Regno wrote:
> Il 14/12/23 11:44, AngeloGioacchino Del Regno ha scritto:
>> Il 13/12/23 13:20, Eugen Hristev ha scritto:
>>> From: Kyrie Wu <kyrie.wu@...iatek.com>
>>>
>>> Add video encoder node.
>>>
>>> Signed-off-by: Kyrie Wu <kyrie.wu@...iatek.com>
>>> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
>>> Reviewed-by: Hsin-Yi Wang <hsinyi@...omium.org>
>>> [eugen.hristev@...labora.com: minor cleanup]
>>> Signed-off-by: Eugen Hristev <eugen.hristev@...labora.com>
>>> ---
>>>   arch/arm64/boot/dts/mediatek/mt8186.dtsi | 24 ++++++++++++++++++++++++
>>>   1 file changed, 24 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/mediatek/mt8186.dtsi 
>>> b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
>>> index 66ead3f23336..8535ff2b44e9 100644
>>> --- a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
>>> +++ b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
>>> @@ -1993,6 +1993,30 @@ larb7: smi@...10000 {
>>>               power-domains = <&spm MT8186_POWER_DOMAIN_VENC>;
>>>           };
>>> +        venc: venc@...20000 {
>>> +            compatible = "mediatek,mt8183-vcodec-enc";
> 
> Sorry for the double email;
> 
> I've just noticed: where's mediatek,mt8186-vcodec-enc? :-)

Hi,

There is none.
This just works exactly as mt8183, thus reusing the same compatible.

Do you want a new dedicated mt8186 compatible as well for the situation *just in
case* some specific difference showing up later ?

Eugen

> 
>>> +            #address-cells = <2>;
>>> +            #size-cells = <2>;
>>> +            reg = <0 0x17020000 0 0x2000>;
>>> +            interrupts = <GIC_SPI 243 IRQ_TYPE_LEVEL_HIGH 0>;
>>> +            iommus = <&iommu_mm IOMMU_PORT_L7_VENC_RCPU>,
>>> +                 <&iommu_mm IOMMU_PORT_L7_VENC_REC>,
>>> +                 <&iommu_mm IOMMU_PORT_L7_VENC_BSDMA>,
>>> +                 <&iommu_mm IOMMU_PORT_L7_VENC_SV_COMV>,
>>> +                 <&iommu_mm IOMMU_PORT_L7_VENC_RD_COMV>,
>>> +                 <&iommu_mm IOMMU_PORT_L7_VENC_CUR_LUMA>,
>>> +                 <&iommu_mm IOMMU_PORT_L7_VENC_CUR_CHROMA>,
>>> +                 <&iommu_mm IOMMU_PORT_L7_VENC_REF_LUMA>,
>>> +                 <&iommu_mm IOMMU_PORT_L7_VENC_REF_CHROMA>;
>>> +            dma-ranges = <0x1 0x0 0x1 0x0 0x1 0x0>;
>>> +            mediatek,scp = <&scp>;
>>> +            clocks = <&vencsys CLK_VENC_CKE1_VENC>;
>>> +            clock-names = "MT_CG_VENC";
>>
>> clock-names = "venc"; (please no underscores and please lower case)
>>
>>> +            assigned-clocks = <&topckgen CLK_TOP_VENC>;
>>> +            assigned-clock-parents = <&topckgen CLK_TOP_UNIVPLL_D3>;
>>> +            power-domains = <&spm MT8186_POWER_DOMAIN_VENC>;
>>> +        };
>>
>>
>> ....also:
>>
>> The following order of properties in device nodes is preferred:
>>
>> 1. "compatible"
>> 2. "reg"
>> 3. "ranges"
>> 4. Standard/common properties (defined by common bindings, e.g. without
>>     vendor-prefixes)
>> 5. Vendor-specific properties
>> 6. "status" (if applicable)
>> 7. Child nodes, where each node is preceded with a blank line
>>
>> Documentation/devicetree/bindings/dts-coding-style.rst
>>
>> Please reorder as per the DTS coding style document, and also please rename the
>> venc node to use a generic name, such as "video-encoder@...x"
>>
>> Cheers,
>> Angelo
> 
> 
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