linux-kernel - Re: [PATCH v9 11/11] arm64: dts: mediatek: mt8195: Add SCP 2nd core

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Date:   Mon, 3 Apr 2023 11:25:07 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Matthias Brugger <matthias.bgg@...il.com>
Cc:     Tinghan Shen <tinghan.shen@...iatek.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v9 11/11] arm64: dts: mediatek: mt8195: Add SCP 2nd core

On Fri, 31 Mar 2023 at 05:00, Matthias Brugger <matthias.bgg@...il.com> wrote:
>
>
>
> On 28/03/2023 04:27, Tinghan Shen wrote:
> > Rewrite the MT8195 SCP device node as a cluster and
> > add the SCP 2nd core in it.
> >
> > Since the SCP device node is changed to multi-core structure,
> > enable SCP cluster to enable probing SCP core 0.
> >
> > Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>
> > Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>
> As this is a bigger change I'd prefer to take it through my tree once the driver
> and dt-bindings changes are merged. Given the fact, maybe it would make sense to
> take 2/11 through my tree as well.
>

Might as well take the whole thing through your tree, which I'm
totally fine with.  But when that happens, you will also have to pick
up other potential patches that touch these files.  We'll sort it out.

> Regards,
> Matthias
>
> > ---
> >   .../boot/dts/mediatek/mt8195-cherry.dtsi      |  6 +++-
> >   arch/arm64/boot/dts/mediatek/mt8195.dtsi      | 32 ++++++++++++++-----
> >   2 files changed, 29 insertions(+), 9 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> > index 56749cfe7c33..31415d71b6a4 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
> > @@ -933,7 +933,11 @@
> >       interrupts-extended = <&pio 222 IRQ_TYPE_LEVEL_HIGH>;
> >   };
> >
> > -&scp {
> > +&scp_cluster {
> > +     status = "okay";
> > +};
> > +
> > +&scp_c0 {
> >       status = "okay";
> >
> >       firmware-name = "mediatek/mt8195/scp.img";
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > index 8fc527570791..5fe5fb32261e 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > @@ -826,14 +826,30 @@
> >                       clocks = <&infracfg_ao CLK_INFRA_AO_GCE2>;
> >               };
> >
> > -             scp: scp@...00000 {
> > -                     compatible = "mediatek,mt8195-scp";
> > -                     reg = <0 0x10500000 0 0x100000>,
> > -                           <0 0x10720000 0 0xe0000>,
> > -                           <0 0x10700000 0 0x8000>;
> > -                     reg-names = "sram", "cfg", "l1tcm";
> > -                     interrupts = <GIC_SPI 462 IRQ_TYPE_LEVEL_HIGH 0>;
> > +             scp_cluster: scp@...00000 {
> > +                     compatible = "mediatek,mt8195-scp-dual";
> > +                     reg = <0 0x10720000 0 0xe0000>, <0 0x10700000 0 0x8000>;
> > +                     reg-names = "cfg", "l1tcm";
> > +                     #address-cells = <1>;
> > +                     #size-cells = <1>;
> > +                     ranges = <0 0 0x10500000 0x100000>;
> >                       status = "disabled";
> > +
> > +                     scp_c0: scp@0 {
> > +                             compatible = "mediatek,scp-core";
> > +                             reg = <0x0 0xa0000>;
> > +                             reg-names = "sram";
> > +                             interrupts = <GIC_SPI 462 IRQ_TYPE_LEVEL_HIGH 0>;
> > +                             status = "disabled";
> > +                     };
> > +
> > +                     scp_c1: scp@...00 {
> > +                             compatible = "mediatek,scp-core";
> > +                             reg = <0xa0000 0x20000>;
> > +                             reg-names = "sram";
> > +                             interrupts = <GIC_SPI 463 IRQ_TYPE_LEVEL_HIGH 0>;
> > +                             status = "disabled";
> > +                     };
> >               };
> >
> >               scp_adsp: clock-controller@...20000 {
> > @@ -2309,7 +2325,7 @@
> >                                <&iommu_vdo M4U_PORT_L19_VENC_REF_LUMA>,
> >                                <&iommu_vdo M4U_PORT_L19_VENC_REF_CHROMA>;
> >                       interrupts = <GIC_SPI 341 IRQ_TYPE_LEVEL_HIGH 0>;
> > -                     mediatek,scp = <&scp>;
> > +                     mediatek,scp = <&scp_c0>;
> >                       clocks = <&vencsys CLK_VENC_VENC>;
> >                       clock-names = "venc_sel";
> >                       assigned-clocks = <&topckgen CLK_TOP_VENC>;