[PATCH] arm64: dts: juno: Add cache-level property to L2 caches

Sudeep Holla sudeep.holla at arm.com
Wed Jun 29 02:59:59 PDT 2022


Add the missing cache-level property to L2 caches. This is needed if
we need to find the last level cache directly from the device tree cache
node.

Cc: Liviu Dudau <liviu.dudau at arm.com>
Cc: Lorenzo Pieralisi <lpieralisi at kernel.org>
Signed-off-by: Sudeep Holla <sudeep.holla at arm.com>
---
 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 ++
 3 files changed, 6 insertions(+)

Hi,

I found out that of_find_last_cache_level() was returning 0 for L2 cache
on juno when I was attempting to use of_find_last_cache_level() during the
rework of my {arch,cache_topology} series[1], although I ended up not
using that function at the end.

Regards,
Sudeep

[1] https://lore.kernel.org/all/20220627165047.336669-1-sudeep.holla@arm.com/

diff --git a/arch/arm64/boot/dts/arm/juno-r1.dts b/arch/arm64/boot/dts/arm/juno-r1.dts
index f099fb611d4e..6451c62146fd 100644
--- a/arch/arm64/boot/dts/arm/juno-r1.dts
+++ b/arch/arm64/boot/dts/arm/juno-r1.dts
@@ -192,6 +192,7 @@ A57_L2: l2-cache0 {
 			cache-size = <0x200000>;
 			cache-line-size = <64>;
 			cache-sets = <2048>;
+			cache-level = <2>;
 		};
 
 		A53_L2: l2-cache1 {
@@ -199,6 +200,7 @@ A53_L2: l2-cache1 {
 			cache-size = <0x100000>;
 			cache-line-size = <64>;
 			cache-sets = <1024>;
+			cache-level = <2>;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/arm/juno-r2.dts b/arch/arm64/boot/dts/arm/juno-r2.dts
index 709389582ae3..438cd1ff4bd0 100644
--- a/arch/arm64/boot/dts/arm/juno-r2.dts
+++ b/arch/arm64/boot/dts/arm/juno-r2.dts
@@ -198,6 +198,7 @@ A72_L2: l2-cache0 {
 			cache-size = <0x200000>;
 			cache-line-size = <64>;
 			cache-sets = <2048>;
+			cache-level = <2>;
 		};
 
 		A53_L2: l2-cache1 {
@@ -205,6 +206,7 @@ A53_L2: l2-cache1 {
 			cache-size = <0x100000>;
 			cache-line-size = <64>;
 			cache-sets = <1024>;
+			cache-level = <2>;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/arm/juno.dts b/arch/arm64/boot/dts/arm/juno.dts
index dbc22e70b62c..cf4a58211399 100644
--- a/arch/arm64/boot/dts/arm/juno.dts
+++ b/arch/arm64/boot/dts/arm/juno.dts
@@ -197,6 +197,7 @@ A57_L2: l2-cache0 {
 			cache-size = <0x200000>;
 			cache-line-size = <64>;
 			cache-sets = <2048>;
+			cache-level = <2>;
 		};
 
 		A53_L2: l2-cache1 {
@@ -204,6 +205,7 @@ A53_L2: l2-cache1 {
 			cache-size = <0x100000>;
 			cache-line-size = <64>;
 			cache-sets = <1024>;
+			cache-level = <2>;
 		};
 	};
 
-- 
2.37.0




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