linux-kernel - [PATCH] arm64: dts: amlogic: meson-g12b: Fix L2 cache reference for S922X CPUs

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Message-Id: <20251123-fixkhadas-v1-1-045348f0a4c2@baylibre.com>
Date: Sun, 23 Nov 2025 18:14:10 +0100
From: Guillaume La Roque <glaroque@...libre.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>, 
 Anand Moon <linux.amoon@...il.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Guillaume La Roque <glaroque@...libre.com>
Subject: [PATCH] arm64: dts: amlogic: meson-g12b: Fix L2 cache reference
 for S922X CPUs

The original addition of cache information for the Amlogic S922X SoC
used the wrong next-level cache node for CPU cores 100 and 101,
incorrectly referencing `l2_cache_l`. These cores actually belong to
the big cluster and should reference `l2_cache_b`. Update the device
tree accordingly.

Fixes: e7f85e6c155a ("arm64: dts: amlogic: Add cache information to the Amlogic S922X SoC")
Signed-off-by: Guillaume La Roque <glaroque@...libre.com>
---
 arch/arm64/boot/dts/amlogic/meson-g12b.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi
index f04efa828256..23358d94844c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b.dtsi
@@ -87,7 +87,7 @@ cpu100: cpu@100 {
 			i-cache-line-size = <32>;
 			i-cache-size = <0x8000>;
 			i-cache-sets = <32>;
-			next-level-cache = <&l2_cache_l>;
+			next-level-cache = <&l2_cache_b>;
 			#cooling-cells = <2>;
 		};
 
@@ -103,7 +103,7 @@ cpu101: cpu@101 {
 			i-cache-line-size = <32>;
 			i-cache-size = <0x8000>;
 			i-cache-sets = <32>;
-			next-level-cache = <&l2_cache_l>;
+			next-level-cache = <&l2_cache_b>;
 			#cooling-cells = <2>;
 		};
 

---
base-commit: 6a23ae0a96a600d1d12557add110e0bb6e32730c
change-id: 20251123-fixkhadas-c84da7d7c47c

Best regards,
-- 
Guillaume La Roque <glaroque@...libre.com>