[PATCH 2/2] arm64: tegra: Describe Tegra234 CPU hierarchy
Thierry Reding
thierry.reding at gmail.com
Fri Nov 12 05:19:04 PST 2021
From: Thierry Reding <treding at nvidia.com>
The NVIDIA Tegra234 SoC has 3 clusters of 4 Cortex-A78AE CPU cores each,
for a total of 12 CPUs. Each CPU has 64 KiB instruction and data caches
with each cluster having an additional 256 KiB unified L2 cache and a 2
MiB L3 cache.
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
arch/arm64/boot/dts/nvidia/tegra234.dtsi | 365 ++++++++++++++++++++++-
1 file changed, 363 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
index 104e5fdd5f8a..db24f48edc9f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -736,12 +736,373 @@ cpus {
#address-cells = <1>;
#size-cells = <0>;
- cpu at 0 {
+ cpu0_0: cpu at 0 {
+ compatible = "arm,cortex-a78";
device_type = "cpu";
- reg = <0x000>;
+ reg = <0x00000>;
enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c0_0>;
+ };
+
+ cpu0_1: cpu at 100 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x00100>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c0_1>;
+ };
+
+ cpu0_2: cpu at 200 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x00200>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c0_2>;
+ };
+
+ cpu0_3: cpu at 300 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x00300>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c0_3>;
+ };
+
+ cpu1_0: cpu at 10000 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x10000>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c1_0>;
+ };
+
+ cpu1_1: cpu at 10100 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x10100>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c1_1>;
+ };
+
+ cpu1_2: cpu at 10200 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x10200>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c1_2>;
+ };
+
+ cpu1_3: cpu at 10300 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x10300>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c1_3>;
+ };
+
+ cpu2_0: cpu at 20000 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x20000>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c2_0>;
+ };
+
+ cpu2_1: cpu at 20100 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x20100>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c2_1>;
+ };
+
+ cpu2_2: cpu at 20200 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x20200>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c2_2>;
+ };
+
+ cpu2_3: cpu at 20300 {
+ compatible = "arm,cortex-a78";
+ device_type = "cpu";
+ reg = <0x20300>;
+
+ enable-method = "psci";
+
+ i-cache-size = <65536>;
+ i-cache-line-size = <64>;
+ i-cache-sets = <256>;
+ d-cache-size = <65536>;
+ d-cache-line-size = <64>;
+ d-cache-sets = <256>;
+ next-level-cache = <&l2c2_3>;
+ };
+
+ cpu-map {
+ cluster0 {
+ core0 {
+ cpu = <&cpu0_0>;
+ };
+
+ core1 {
+ cpu = <&cpu0_1>;
+ };
+
+ core2 {
+ cpu = <&cpu0_2>;
+ };
+
+ core3 {
+ cpu = <&cpu0_3>;
+ };
+ };
+
+ cluster1 {
+ core0 {
+ cpu = <&cpu1_0>;
+ };
+
+ core1 {
+ cpu = <&cpu1_1>;
+ };
+
+ core2 {
+ cpu = <&cpu1_2>;
+ };
+
+ core3 {
+ cpu = <&cpu1_3>;
+ };
+ };
+
+ cluster2 {
+ core0 {
+ cpu = <&cpu2_0>;
+ };
+
+ core1 {
+ cpu = <&cpu2_1>;
+ };
+
+ core2 {
+ cpu = <&cpu2_2>;
+ };
+
+ core3 {
+ cpu = <&cpu2_3>;
+ };
+ };
+ };
+
+ l2c0_0: l2-cache00 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c0>;
+ };
+
+ l2c0_1: l2-cache01 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c0>;
};
+
+ l2c0_2: l2-cache02 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c0>;
+ };
+
+ l2c0_3: l2-cache03 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c0>;
+ };
+
+ l2c1_0: l2-cache10 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c1>;
+ };
+
+ l2c1_1: l2-cache11 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c1>;
+ };
+
+ l2c1_2: l2-cache12 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c1>;
+ };
+
+ l2c1_3: l2-cache13 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c1>;
+ };
+
+ l2c2_0: l2-cache20 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c2>;
+ };
+
+ l2c2_1: l2-cache21 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c2>;
+ };
+
+ l2c2_2: l2-cache22 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c2>;
+ };
+
+ l2c2_3: l2-cache23 {
+ cache-size = <262144>;
+ cache-line-size = <64>;
+ cache-sets = <512>;
+ cache-unified;
+ next-level-cache = <&l3c2>;
+ };
+
+ l3c0: l3-cache0 {
+ cache-size = <2097152>;
+ cache-line-size = <64>;
+ cache-sets = <2048>;
+ };
+
+ l3c1: l3-cache1 {
+ cache-size = <2097152>;
+ cache-line-size = <64>;
+ cache-sets = <2048>;
+ };
+
+ l3c2: l3-cache2 {
+ cache-size = <2097152>;
+ cache-line-size = <64>;
+ cache-sets = <2048>;
+ };
+ };
+
+ pmu {
+ compatible = "arm,armv8-pmuv3";
+ interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+ status = "okay";
};
psci {
--
2.33.1
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