linux-kernel - [PATCH v2 1/2] arm64: dts: exynos7: Add cpu cache information

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Date:   Tue, 22 Jun 2021 18:35:50 +0530
From:   Alim Akhtar <alim.akhtar@...sung.com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        robh+dt@...nel.org
Cc:     krzysztof.kozlowski@...onical.com,
        linux-samsung-soc@...r.kernel.org,
        Alim Akhtar <alim.akhtar@...sung.com>
Subject: [PATCH v2 1/2] arm64: dts: exynos7: Add cpu cache information

This patch adds cpu caches information to its dt
nodes so that the same is available to userspace
via sysfs.
This SoC has 48/32 KB I/D cache for each cores
and 2MB of L2 cache.

Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
---
Changes since v1:
* no change in this patch
* changes as per Krzysztof's review comments in patch 2/2

 arch/arm64/boot/dts/exynos/exynos7.dtsi | 35 +++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
index 10244e59d56d..8b06397ba6e7 100644
--- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
@@ -54,6 +54,13 @@
 			compatible = "arm,cortex-a57";
 			reg = <0x0>;
 			enable-method = "psci";
+			i-cache-size = <0xc000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&atlas_l2>;
 		};
 
 		cpu_atlas1: cpu@1 {
@@ -61,6 +68,13 @@
 			compatible = "arm,cortex-a57";
 			reg = <0x1>;
 			enable-method = "psci";
+			i-cache-size = <0xc000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&atlas_l2>;
 		};
 
 		cpu_atlas2: cpu@2 {
@@ -68,6 +82,13 @@
 			compatible = "arm,cortex-a57";
 			reg = <0x2>;
 			enable-method = "psci";
+			i-cache-size = <0xc000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&atlas_l2>;
 		};
 
 		cpu_atlas3: cpu@3 {
@@ -75,6 +96,20 @@
 			compatible = "arm,cortex-a57";
 			reg = <0x3>;
 			enable-method = "psci";
+			i-cache-size = <0xc000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			next-level-cache = <&atlas_l2>;
+		};
+
+		atlas_l2: l2-cache0 {
+			compatible = "cache";
+			cache-size = <0x200000>;
+			cache-line-size = <64>;
+			cache-sets = <2048>;
 		};
 	};
 

base-commit: 614124bea77e452aa6df7a8714e8bc820b489922
-- 
2.17.1