linux-kernel - Re: [PATCH v2 02/23] arm64: dts: Update cache properties for amd

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Message-ID: <2a40c27a-fb0a-5c96-478f-0aaf4d348442@arm.com>
Date:   Thu, 12 Jan 2023 09:34:01 +0100
From:   Pierre Gondois <pierre.gondois@....com>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Brijesh Singh <brijeshkumar.singh@....com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 02/23] arm64: dts: Update cache properties for amd

(subset for cc list)
Hello,
Just a reminder in case the patch was forgotten,
Regards,
Pierre

On 11/7/22 16:56, Pierre Gondois wrote:
> The DeviceTree Specification v0.3 specifies that the cache node
> 'compatible' and 'cache-level' properties are 'required'. Cf.
> s3.8 Multi-level and Shared Cache Nodes
> The 'cache-unified' property should be present if one of the
> properties for unified cache is present ('cache-size', ...).
> 
> Update the Device Trees accordingly.
> 
> Signed-off-by: Pierre Gondois <pierre.gondois@....com>
> ---
>   arch/arm64/boot/dts/amd/amd-seattle-cpus.dtsi | 9 +++++++++
>   1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amd/amd-seattle-cpus.dtsi b/arch/arm64/boot/dts/amd/amd-seattle-cpus.dtsi
> index 93688a0b6820..9f2d983e082d 100644
> --- a/arch/arm64/boot/dts/amd/amd-seattle-cpus.dtsi
> +++ b/arch/arm64/boot/dts/amd/amd-seattle-cpus.dtsi
> @@ -163,38 +163,47 @@ CPU7: cpu@301 {
>   	};
>   
>   	L2_0: l2-cache0 {
> +		compatible = "cache";
>   		cache-size = <0x100000>;
>   		cache-line-size = <64>;
>   		cache-sets = <1024>;
>   		cache-unified;
> +		cache-level = <2>;
>   		next-level-cache = <&L3>;
>   	};
>   
>   	L2_1: l2-cache1 {
> +		compatible = "cache";
>   		cache-size = <0x100000>;
>   		cache-line-size = <64>;
>   		cache-sets = <1024>;
>   		cache-unified;
> +		cache-level = <2>;
>   		next-level-cache = <&L3>;
>   	};
>   
>   	L2_2: l2-cache2 {
> +		compatible = "cache";
>   		cache-size = <0x100000>;
>   		cache-line-size = <64>;
>   		cache-sets = <1024>;
>   		cache-unified;
> +		cache-level = <2>;
>   		next-level-cache = <&L3>;
>   	};
>   
>   	L2_3: l2-cache3 {
> +		compatible = "cache";
>   		cache-size = <0x100000>;
>   		cache-line-size = <64>;
>   		cache-sets = <1024>;
>   		cache-unified;
> +		cache-level = <2>;
>   		next-level-cache = <&L3>;
>   	};
>   
>   	L3: l3-cache {
> +		compatible = "cache";
>   		cache-level = <3>;
>   		cache-size = <0x800000>;
>   		cache-line-size = <64>;