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[8/9] arm64: dts: apple: t8012: Add CPU caches

Message ID 20250220-caches-v1-8-2c7011097768@gmail.com (mailing list archive)
State New
Headers show
Series arm64: dts: apple: Add CPU cache information for Apple A7-A11, T2 SoCs | expand

Commit Message

Nick Chan Feb. 20, 2025, 12:21 p.m. UTC 
Add information about CPU caches in the P-cluster of Apple T2 SoC. Due to
"Apple Fusion Architecture" big.LITTLE switcher, only caches from one of
the clusters can be used at any given moment.

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
---
 arch/arm64/boot/dts/apple/t8012.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/apple/t8012.dtsi b/arch/arm64/boot/dts/apple/t8012.dtsi
index 42df2f51ad7be4c4533e76d18e49a9a747b6b7a8..a259e5735d938cfa5b29cee6c754c7a3c0aaae08 100644
--- a/arch/arm64/boot/dts/apple/t8012.dtsi
+++ b/arch/arm64/boot/dts/apple/t8012.dtsi
@@ -36,6 +36,9 @@  cpu0: cpu@10000 {
 			performance-domains = <&cpufreq>;
 			enable-method = "spin-table";
 			device_type = "cpu";
+			next-level-cache = <&l2_cache>;
+			i-cache-size = <0x10000>; /* P-core */
+			d-cache-size = <0x10000>; /* P-core */
 		};
 
 		cpu1: cpu@10001 {
@@ -46,6 +49,16 @@  cpu1: cpu@10001 {
 			performance-domains = <&cpufreq>;
 			enable-method = "spin-table";
 			device_type = "cpu";
+			next-level-cache = <&l2_cache>;
+			i-cache-size = <0x10000>; /* P-core */
+			d-cache-size = <0x10000>; /* P-core */
+		};
+
+		l2_cache: l2-cache {
+			compatible = "cache";
+			cache-level = <2>;
+			cache-unified;
+			cache-size = <0x300000>; /* P-cluster */
 		};
 	};