linux-kernel - Re: [PATCH v3 4/7] arm64: dts: mediatek: mt8186: Add ADSP node

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Date:   Fri, 17 Mar 2023 05:17:45 +0000
From:   Allen-KH Cheng (程冠勳) 
        <Allen-KH.Cheng@...iatek.com>
To:     "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "sboyd@...nel.org" <sboyd@...nel.org>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "hsinyi@...omium.org" <hsinyi@...omium.org>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 4/7] arm64: dts: mediatek: mt8186: Add ADSP node

Hi Angelo,

On Fri, 2023-03-03 at 12:31 +0100, AngeloGioacchino Del Regno wrote:
> Il 03/03/23 04:17, Allen-KH Cheng ha scritto:
> > Add ADSP node for MT8186 SoC.
> > 
> > Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
> > ---
> >   arch/arm64/boot/dts/mediatek/mt8186.dtsi | 16 ++++++++++++++++
> >   1 file changed, 16 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
> > b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
> > index 0e42bdbd2cb6..337bcf3c1571 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
> > @@ -633,6 +633,22 @@
> >   			interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> >   		};
> >   
> > +		adsp: adsp@...80000 {
> > +			compatible = "mediatek,mt8186-dsp";
> > +			reg = <0 0x10680000 0 0x2000>, <0 0x10800000 0
> > 0x100000>,
> > +			      <0 0x1068b000 0 0x100>, <0 0x1068f000 0
> > 0x1000>;
> > +			reg-names = "cfg", "sram", "sec", "bus";
> > +			clocks = <&topckgen CLK_TOP_AUDIODSP>,
> > <&topckgen CLK_TOP_ADSP_BUS>;
> 
> Was missing <&topckgen CLK_TOP_AUDIO_H> intentional here?
> 
> AFAIK, that's required for the ADSP.
> 
> Regards,
> Angelo


This may be dependent on the design of the chipset.

CLK_TOP_AUDIO_H will be used by the afe (audio-controller) node. This
is not used for DSP in the MT8186 architecture.

Thanks,
Allen