dt: amd-seattle: add a description of the CPUs and caches

Add a DT description of the CPU and cache hierarchy as found on
the AMD Seattle SOC. Given the tight coupling of the PMU with
the CPUs, move the PMU node into the cpu .dtsi file as well, and
add the missing affinity description.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

4 files changed, 226 insertions, 12 deletions

diff --git a/arch/arm64/boot/dts/amd/amd-overdrive-rev-b0.dts b/arch/arm64/boot/dts/amd/amd-overdrive-rev-b0.dts
index 4997a74aeb67..c290d1ce2b03 100644
--- a/arch/arm64/boot/dts/amd/amd-overdrive-rev-b0.dts
+++ b/arch/arm64/boot/dts/amd/amd-overdrive-rev-b0.dts
@@ -9,6 +9,7 @@
 /dts-v1/;
 
 /include/ "amd-seattle-soc.dtsi"
+/include/ "amd-seattle-cpus.dtsi"
 
 / {
 	model = "AMD Seattle (Rev.B0) Development Board (Overdrive)";
diff --git a/arch/arm64/boot/dts/amd/amd-overdrive-rev-b1.dts b/arch/arm64/boot/dts/amd/amd-overdrive-rev-b1.dts
index 92cef05c6b74..e0926f6bb7c3 100644
--- a/arch/arm64/boot/dts/amd/amd-overdrive-rev-b1.dts
+++ b/arch/arm64/boot/dts/amd/amd-overdrive-rev-b1.dts
@@ -9,6 +9,7 @@
 /dts-v1/;
 
 /include/ "amd-seattle-soc.dtsi"
+/include/ "amd-seattle-cpus.dtsi"
 
 / {
 	model = "AMD Seattle (Rev.B1) Development Board (Overdrive)";
diff --git a/arch/arm64/boot/dts/amd/amd-seattle-cpus.dtsi b/arch/arm64/boot/dts/amd/amd-seattle-cpus.dtsi
new file mode 100644
index 000000000000..93688a0b6820
--- /dev/null
+++ b/arch/arm64/boot/dts/amd/amd-seattle-cpus.dtsi
@@ -0,0 +1,224 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/ {
+	cpus {
+		#address-cells = <0x1>;
+		#size-cells = <0x0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&CPU0>;
+				};
+				core1 {
+					cpu = <&CPU1>;
+				};
+			};
+			cluster1 {
+				core0 {
+					cpu = <&CPU2>;
+				};
+				core1 {
+					cpu = <&CPU3>;
+				};
+			};
+			cluster2 {
+				core0 {
+					cpu = <&CPU4>;
+				};
+				core1 {
+					cpu = <&CPU5>;
+				};
+			};
+			cluster3 {
+				core0 {
+					cpu = <&CPU6>;
+				};
+				core1 {
+					cpu = <&CPU7>;
+				};
+			};
+		};
+
+		CPU0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a57";
+			reg = <0x0>;
+			enable-method = "psci";
+
+			i-cache-size = <0xC000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			l2-cache = <&L2_0>;
+
+		};
+
+		CPU1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a57";
+			reg = <0x1>;
+			enable-method = "psci";
+
+			i-cache-size = <0xC000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			l2-cache = <&L2_0>;
+		};
+
+		CPU2: cpu@100 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a57";
+			reg = <0x100>;
+			enable-method = "psci";
+
+			i-cache-size = <0xC000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			l2-cache = <&L2_1>;
+		};
+
+		CPU3: cpu@101 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a57";
+			reg = <0x101>;
+			enable-method = "psci";
+
+			i-cache-size = <0xC000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			l2-cache = <&L2_1>;
+		};
+
+		CPU4: cpu@200 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a57";
+			reg = <0x200>;
+			enable-method = "psci";
+
+			i-cache-size = <0xC000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			l2-cache = <&L2_2>;
+		};
+
+		CPU5: cpu@201 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a57";
+			reg = <0x201>;
+			enable-method = "psci";
+
+			i-cache-size = <0xC000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			l2-cache = <&L2_2>;
+		};
+
+		CPU6: cpu@300 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a57";
+			reg = <0x300>;
+			enable-method = "psci";
+
+			i-cache-size = <0xC000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			l2-cache = <&L2_3>;
+		};
+
+		CPU7: cpu@301 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a57";
+			reg = <0x301>;
+			enable-method = "psci";
+
+			i-cache-size = <0xC000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <256>;
+			l2-cache = <&L2_3>;
+		};
+	};
+
+	L2_0: l2-cache0 {
+		cache-size = <0x100000>;
+		cache-line-size = <64>;
+		cache-sets = <1024>;
+		cache-unified;
+		next-level-cache = <&L3>;
+	};
+
+	L2_1: l2-cache1 {
+		cache-size = <0x100000>;
+		cache-line-size = <64>;
+		cache-sets = <1024>;
+		cache-unified;
+		next-level-cache = <&L3>;
+	};
+
+	L2_2: l2-cache2 {
+		cache-size = <0x100000>;
+		cache-line-size = <64>;
+		cache-sets = <1024>;
+		cache-unified;
+		next-level-cache = <&L3>;
+	};
+
+	L2_3: l2-cache3 {
+		cache-size = <0x100000>;
+		cache-line-size = <64>;
+		cache-sets = <1024>;
+		cache-unified;
+		next-level-cache = <&L3>;
+	};
+
+	L3: l3-cache {
+		cache-level = <3>;
+		cache-size = <0x800000>;
+		cache-line-size = <64>;
+		cache-sets = <8192>;
+		cache-unified;
+	};
+
+	pmu {
+		compatible = "arm,cortex-a57-pmu";
+		interrupts = <0x0 0x7 0x4>,
+			     <0x0 0x8 0x4>,
+			     <0x0 0x9 0x4>,
+			     <0x0 0xa 0x4>,
+			     <0x0 0xb 0x4>,
+			     <0x0 0xc 0x4>,
+			     <0x0 0xd 0x4>,
+			     <0x0 0xe 0x4>;
+		interrupt-affinity = <&CPU0>,
+				     <&CPU1>,
+				     <&CPU2>,
+				     <&CPU3>,
+				     <&CPU4>,
+				     <&CPU5>,
+				     <&CPU6>,
+				     <&CPU7>;
+	};
+};
diff --git a/arch/arm64/boot/dts/amd/amd-seattle-soc.dtsi b/arch/arm64/boot/dts/amd/amd-seattle-soc.dtsi
index 547a6bf10f5e..690020589d41 100644
--- a/arch/arm64/boot/dts/amd/amd-seattle-soc.dtsi
+++ b/arch/arm64/boot/dts/amd/amd-seattle-soc.dtsi
@@ -38,18 +38,6 @@
 			     <1 10 0xff04>;
 	};
 
-	pmu {
-		compatible = "arm,armv8-pmuv3";
-		interrupts = <0 7 4>,
-			     <0 8 4>,
-			     <0 9 4>,
-			     <0 10 4>,
-			     <0 11 4>,
-			     <0 12 4>,
-			     <0 13 4>,
-			     <0 14 4>;
-	};
-
 	smb0: smb {
 		compatible = "simple-bus";
 		#address-cells = <2>;