From 59fb813f9742b349f48250bd7793279cafe2752c Mon Sep 17 00:00:00 2001
From: Pierre Gondois <pierre.gondois@arm.com>
Date: Mon, 7 Nov 2022 16:56:58 +0100
Subject: [PATCH] arm64: dts: Update cache properties for Arm Ltd platforms

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 relevant device trees nodes accordingly.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Link: https://lore.kernel.org/r/20221107155825.1644604-6-pierre.gondois@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

Signed-off-by: Jon Mason <jon.mason@arm.com>
Upstream-Status: Backport
---
 arch/arm64/boot/dts/arm/corstone1000.dtsi            | 1 +
 arch/arm64/boot/dts/arm/foundation-v8.dtsi           | 1 +
 arch/arm64/boot/dts/arm/juno-r1.dts                  | 2 ++
 arch/arm64/boot/dts/arm/juno-r2.dts                  | 2 ++
 arch/arm64/boot/dts/arm/juno.dts                     | 2 ++
 arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts           | 1 +
 arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts | 1 +
 7 files changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/arm/corstone1000.dtsi b/arch/arm64/boot/dts/arm/corstone1000.dtsi
index 4e46826f883a..21f1f952e985 100644
--- a/arch/arm64/boot/dts/arm/corstone1000.dtsi
+++ b/arch/arm64/boot/dts/arm/corstone1000.dtsi
@@ -53,6 +53,7 @@ gic: interrupt-controller@1c000000 {
 
 	L2_0: l2-cache0 {
 		compatible = "cache";
+		cache-unified;
 		cache-level = <2>;
 		cache-size = <0x80000>;
 		cache-line-size = <64>;
diff --git a/arch/arm64/boot/dts/arm/foundation-v8.dtsi b/arch/arm64/boot/dts/arm/foundation-v8.dtsi
index 83e3e7e3984f..c8bd23b1a7ba 100644
--- a/arch/arm64/boot/dts/arm/foundation-v8.dtsi
+++ b/arch/arm64/boot/dts/arm/foundation-v8.dtsi
@@ -58,6 +58,7 @@ cpu3: cpu@3 {
 
 		L2_0: l2-cache0 {
 			compatible = "cache";
+			cache-level = <2>;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/arm/juno-r1.dts b/arch/arm64/boot/dts/arm/juno-r1.dts
index 6451c62146fd..1d90eeebb37d 100644
--- a/arch/arm64/boot/dts/arm/juno-r1.dts
+++ b/arch/arm64/boot/dts/arm/juno-r1.dts
@@ -189,6 +189,7 @@ A53_3: cpu@103 {
 
 		A57_L2: l2-cache0 {
 			compatible = "cache";
+			cache-unified;
 			cache-size = <0x200000>;
 			cache-line-size = <64>;
 			cache-sets = <2048>;
@@ -197,6 +198,7 @@ A57_L2: l2-cache0 {
 
 		A53_L2: l2-cache1 {
 			compatible = "cache";
+			cache-unified;
 			cache-size = <0x100000>;
 			cache-line-size = <64>;
 			cache-sets = <1024>;
diff --git a/arch/arm64/boot/dts/arm/juno-r2.dts b/arch/arm64/boot/dts/arm/juno-r2.dts
index 438cd1ff4bd0..d2ada69b0a43 100644
--- a/arch/arm64/boot/dts/arm/juno-r2.dts
+++ b/arch/arm64/boot/dts/arm/juno-r2.dts
@@ -195,6 +195,7 @@ A53_3: cpu@103 {
 
 		A72_L2: l2-cache0 {
 			compatible = "cache";
+			cache-unified;
 			cache-size = <0x200000>;
 			cache-line-size = <64>;
 			cache-sets = <2048>;
@@ -203,6 +204,7 @@ A72_L2: l2-cache0 {
 
 		A53_L2: l2-cache1 {
 			compatible = "cache";
+			cache-unified;
 			cache-size = <0x100000>;
 			cache-line-size = <64>;
 			cache-sets = <1024>;
diff --git a/arch/arm64/boot/dts/arm/juno.dts b/arch/arm64/boot/dts/arm/juno.dts
index cf4a58211399..5e48a01a5b9f 100644
--- a/arch/arm64/boot/dts/arm/juno.dts
+++ b/arch/arm64/boot/dts/arm/juno.dts
@@ -194,6 +194,7 @@ A53_3: cpu@103 {
 
 		A57_L2: l2-cache0 {
 			compatible = "cache";
+			cache-unified;
 			cache-size = <0x200000>;
 			cache-line-size = <64>;
 			cache-sets = <2048>;
@@ -202,6 +203,7 @@ A57_L2: l2-cache0 {
 
 		A53_L2: l2-cache1 {
 			compatible = "cache";
+			cache-unified;
 			cache-size = <0x100000>;
 			cache-line-size = <64>;
 			cache-sets = <1024>;
diff --git a/arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts b/arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts
index 258991ad7cc0..ef68f5aae7dd 100644
--- a/arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts
+++ b/arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts
@@ -71,6 +71,7 @@ cpu@3 {
 
 		L2_0: l2-cache0 {
 			compatible = "cache";
+			cache-level = <2>;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts b/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts
index 5b6d9d8e934d..796cd7d02eb5 100644
--- a/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts
+++ b/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts
@@ -57,6 +57,7 @@ cpu@1 {
 
 		L2_0: l2-cache0 {
 			compatible = "cache";
+			cache-level = <2>;
 		};
 	};
 
-- 
2.30.2