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@xxxxxxxxx>
---
arch/arm64/boot/dts/apple/t8012.dtsi | 13 +++++++++++++
1 file changed, 13 insertions(+)
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 */
};
};
--
2.48.1
