Re: [PATCH v2 17/23] arm64: dts: mt8192: Add vcodec lat and core nodes - allen-kh.cheng

From: allen-kh.cheng <allen-kh.cheng@mediatek.com>
To: "Nícolas F. R. A. Prado" <nfraprado@collabora.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	--to=Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
	<Project_Global_Chrome_Upstream_Group@mediatek.com>,
	<devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>,
	Chen-Yu Tsai <wenst@chromium.org>,
	Ryder Lee <ryder.lee@kernel.org>
Subject: Re: [PATCH v2 17/23] arm64: dts: mt8192: Add vcodec lat and core nodes
Date: Wed, 23 Feb 2022 21:39:39 +0800	[thread overview]
Message-ID: <1c9ceae8eccbc17e43bdf5b44def09cea618dce4.camel@mediatek.com> (raw)
In-Reply-To: <20220222223355.o4o6v7yxozsnkz33@notapiano>

On Tue, 2022-02-22 at 17:33 -0500, Nícolas F. R. A. Prado wrote:
> On Fri, Feb 18, 2022 at 05:16:27PM +0800, Allen-KH Cheng wrote:
> > Add vcodec lat and core nodes for mt8192 SoC.
> > 
> > Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
> > ---
> >  arch/arm64/boot/dts/mediatek/mt8192.dtsi | 58
> > ++++++++++++++++++++++++
> >  1 file changed, 58 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> > b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> > index 936aa788664f..543a80252ce5 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> > @@ -1291,6 +1291,64 @@
> >  			power-domains = <&spm
> > MT8192_POWER_DOMAIN_ISP2>;
> >  		};
> >  
> > +		vcodec_dec: vcodec_dec@16000000 {
> 
> It's usually preferred to use '-' instead of '_' in the node name,
> like:
> 
> 		vcodec_dec: vcodec-dec@16000000 {
> 
> Same thing for the other vcodec nodes below.
> 
> But more importantly, the
> Documentation/devicetree/bindings/media/mediatek,vcodec-subdev-
> decoder.yaml
> dt-binding shows the mtk-vcodec-lat and mtk-vcodec-core as subnodes
> of
> vcodec-dec. So I would follow that same structure here. Unless it
> does make more
> sense to have the nodes separate like this, but in that case the dt-
> binding
> should be updated.
> 
Hi Nícolas

I think it's ok set mtk-vcodec-lat and mtk-vcodec-core as subnodes of
vcodec-dec.

I will retest in mt8192 product and make sure this works.

Many thanks,
Allen

> > +			compatible = "mediatek,mt8192-vcodec-dec";
> > +			reg = <0 0x16000000 0 0x1000>;		/*
> > VDEC_SYS */
> > +			mediatek,scp = <&scp>;
> > +			iommus = <&iommu0 M4U_PORT_L4_VDEC_MC_EXT>;
> > +		};
> > +
> > +		vcodec_lat: vcodec_lat@0x16010000 {
> 
> Again, please drop the '0x' prefix.
> 
> > +			compatible = "mediatek,mtk-vcodec-lat";
> > +			reg = <0 0x16010000 0 0x800>;		/*
> > VDEC_MISC */
> > +			interrupts = <GIC_SPI 426 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> > +			iommus = <&iommu0
> > M4U_PORT_L5_VDEC_LAT0_VLD_EXT>,
> > +				<&iommu0
> > M4U_PORT_L5_VDEC_LAT0_VLD2_EXT>,
> > +				<&iommu0
> > M4U_PORT_L5_VDEC_LAT0_AVC_MV_EXT>,
> > +				<&iommu0
> > M4U_PORT_L5_VDEC_LAT0_PRED_RD_EXT>,
> > +				<&iommu0
> > M4U_PORT_L5_VDEC_LAT0_TILE_EXT>,
> > +				<&iommu0
> > M4U_PORT_L5_VDEC_LAT0_WDMA_EXT>,
> > +				<&iommu0
> > M4U_PORT_L5_VDEC_LAT0_RG_CTRL_DMA_EXT>,
> > +				<&iommu0 M4U_PORT_L5_VDEC_UFO_ENC_EXT>;
> > +			clocks = <&topckgen CLK_TOP_VDEC_SEL>,
> > +				 <&vdecsys_soc CLK_VDEC_SOC_VDEC>,
> > +				 <&vdecsys_soc CLK_VDEC_SOC_LAT>,
> > +				 <&vdecsys_soc CLK_VDEC_SOC_LARB1>,
> > +				 <&topckgen CLK_TOP_MAINPLL_D4>;
> > +			clock-names = "vdec-sel", "vdec-soc-vdec",
> > "vdec-soc-lat", "vdec-vdec",
> > +				      "vdec-top";
> > +			assigned-clocks = <&topckgen CLK_TOP_VDEC_SEL>;
> > +			assigned-clock-parents = <&topckgen
> > CLK_TOP_MAINPLL_D4>;
> > +			power-domains = <&spm
> > MT8192_POWER_DOMAIN_VDEC>;
> > +		};
> > +
> > +		vcodec_core: vcodec_core@0x16025000 {
> 
> Ditto.

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