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

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Message-ID: <848971ea-b142-d088-df6f-74ee2d807950@gmail.com>
Date:   Fri, 31 Mar 2023 12:59:57 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Tinghan Shen <tinghan.shen@...iatek.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     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 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.

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>;