[PATCH v3 02/11] arm64: dts: amlogic: Add cache information to the Amlogic SM1 SoC
Anand Moon
linux.amoon at gmail.com
Fri Sep 5 04:57:33 PDT 2025
As per S905X3 datasheet add missing cache information to the Amlogic
SM1 SoC. ARM Cortex-A55 CPU uses unified L3 cache instead of L2 cache.
- Each Cortex-A55 core has 32KB of L1 instruction cache available and
32KB of L1 data cache available.
- Along with 256KB Unified L2 cache.
Signed-off-by: Anand Moon <linux.amoon at gmail.com>
---
arch/arm64/boot/dts/amlogic/meson-sm1.dtsi | 27 ++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
index 966ebb19cc55f..e5db8ce940620 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
@@ -55,6 +55,12 @@ cpu0: cpu at 0 {
compatible = "arm,cortex-a55";
reg = <0x0 0x0>;
enable-method = "psci";
+ d-cache-line-size = <32>;
+ d-cache-size = <0x8000>;
+ d-cache-sets = <32>;
+ i-cache-line-size = <32>;
+ i-cache-size = <0x8000>;
+ i-cache-sets = <32>;
next-level-cache = <&l2>;
#cooling-cells = <2>;
};
@@ -64,6 +70,12 @@ cpu1: cpu at 1 {
compatible = "arm,cortex-a55";
reg = <0x0 0x1>;
enable-method = "psci";
+ d-cache-line-size = <32>;
+ d-cache-size = <0x8000>;
+ d-cache-sets = <32>;
+ i-cache-line-size = <32>;
+ i-cache-size = <0x8000>;
+ i-cache-sets = <32>;
next-level-cache = <&l2>;
#cooling-cells = <2>;
};
@@ -73,6 +85,12 @@ cpu2: cpu at 2 {
compatible = "arm,cortex-a55";
reg = <0x0 0x2>;
enable-method = "psci";
+ d-cache-line-size = <32>;
+ d-cache-size = <0x8000>;
+ d-cache-sets = <32>;
+ i-cache-line-size = <32>;
+ i-cache-size = <0x8000>;
+ i-cache-sets = <32>;
next-level-cache = <&l2>;
#cooling-cells = <2>;
};
@@ -82,6 +100,12 @@ cpu3: cpu at 3 {
compatible = "arm,cortex-a55";
reg = <0x0 0x3>;
enable-method = "psci";
+ d-cache-line-size = <32>;
+ d-cache-size = <0x8000>;
+ d-cache-sets = <32>;
+ i-cache-line-size = <32>;
+ i-cache-size = <0x8000>;
+ i-cache-sets = <32>;
next-level-cache = <&l2>;
#cooling-cells = <2>;
};
@@ -90,6 +114,9 @@ l2: l2-cache0 {
compatible = "cache";
cache-level = <2>;
cache-unified;
+ cache-size = <0x40000>; /* L2. 256 KB */
+ cache-line-size = <64>;
+ cache-sets = <256>;
};
};
--
2.50.1
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