linux-kernel - [PATCH 01/20] arm64: dts: Update cache properties for amd

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Date:   Mon, 31 Oct 2022 10:19:03 +0100
From:   Pierre Gondois <pierre.gondois@....com>
To:     linux-kernel@...r.kernel.org
Cc:     pierre.gondois@....com, Rob.Herring@....com,
        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: [PATCH 01/20] arm64: dts: Update cache properties for amd

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 recently added init_of_cache_level() function checks
these properties. Add them if missing.

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>;
-- 
2.25.1