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

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Date:   Thu, 14 Dec 2023 11:44:26 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Eugen Hristev <eugen.hristev@...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

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";
> +			#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