arm64: dts: amlogic: Add cache information to the Amlogic SM1 SoC

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.

Cache memory significantly reduces the time it takes for the CPU
to access data and instructions, leading to faster program execution
and overall system responsiveness.

Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Link: https://lore.kernel.org/r/20250825065240.22577-3-linux.amoon@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
index 966ebb19cc55f4df8e3ee061ab35fa8a22e3384d..e5db8ce940620c25a4293f328c93e1237b821d41 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi
@@ -55,6 +55,12 @@
                        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 @@
                        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 @@
                        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 @@
                        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 @@
                        compatible = "cache";
                        cache-level = <2>;
                        cache-unified;
+                       cache-size = <0x40000>; /* L2. 256 KB */
+                       cache-line-size = <64>;
+                       cache-sets = <256>;
                };
        };