arm64: dts: apple: Add cpufreq nodes for S8000/S8003

Add cpufreq nodes for the two variants of Apple A9 SoC. The difference is
that S8000 is slower than S8003 in state transitions.

Change the copyright information in s8000.dtsi and s8003.dtsi as well
since these are now essentially new files with the original content now
being in s800-0-3.dtsi.

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Sven Peter <sven@svenpeter.dev>

3 files changed, 114 insertions, 2 deletions

diff --git a/arch/arm64/boot/dts/apple/s800-0-3.dtsi b/arch/arm64/boot/dts/apple/s800-0-3.dtsi
index 1e0b8f631ac0..2aec49f0da64 100644
--- a/arch/arm64/boot/dts/apple/s800-0-3.dtsi
+++ b/arch/arm64/boot/dts/apple/s800-0-3.dtsi
@@ -32,6 +32,8 @@
 			compatible = "apple,twister";
 			reg = <0x0 0x0>;
 			cpu-release-addr = <0 0>; /* To be filled in by loader */
+			operating-points-v2 = <&twister_opp>;
+			performance-domains = <&cpufreq>;
 			enable-method = "spin-table";
 			device_type = "cpu";
 		};
@@ -40,6 +42,8 @@
 			compatible = "apple,twister";
 			reg = <0x0 0x1>;
 			cpu-release-addr = <0 0>; /* To be filled in by loader */
+			operating-points-v2 = <&twister_opp>;
+			performance-domains = <&cpufreq>;
 			enable-method = "spin-table";
 			device_type = "cpu";
 		};
@@ -52,6 +56,12 @@
 		nonposted-mmio;
 		ranges;
 
+		cpufreq: performance-controller@202220000 {
+			compatible = "apple,s8000-cluster-cpufreq", "apple,t8103-cluster-cpufreq", "apple,cluster-cpufreq";
+			reg = <0x2 0x02220000 0 0x1000>;
+			#performance-domain-cells = <0>;
+		};
+
 		serial0: serial@20a0c0000 {
 			compatible = "apple,s5l-uart";
 			reg = <0x2 0x0a0c0000 0x0 0x4000>;
diff --git a/arch/arm64/boot/dts/apple/s8000.dtsi b/arch/arm64/boot/dts/apple/s8000.dtsi
index c7e39abda7e1..72322f5677ab 100644
--- a/arch/arm64/boot/dts/apple/s8000.dtsi
+++ b/arch/arm64/boot/dts/apple/s8000.dtsi
@@ -4,11 +4,62 @@
  *
  * Other names: H8P, "Maui"
  *
- * Copyright (c) 2022, Konrad Dybcio <konradybcio@kernel.org>
+ * Copyright (c) 2024, Nick Chan <towinchenmi@gmail.com>
  */
 
 #include "s800-0-3.dtsi"
 
+/ {
+	twister_opp: opp-table {
+		compatible = "operating-points-v2";
+
+		opp01 {
+			opp-hz = /bits/ 64 <300000000>;
+			opp-level = <1>;
+			clock-latency-ns = <650>;
+		};
+		opp02 {
+			opp-hz = /bits/ 64 <396000000>;
+			opp-level = <2>;
+			clock-latency-ns = <75000>;
+		};
+		opp03 {
+			opp-hz = /bits/ 64 <600000000>;
+			opp-level = <3>;
+			clock-latency-ns = <27000>;
+		};
+		opp04 {
+			opp-hz = /bits/ 64 <912000000>;
+			opp-level = <4>;
+			clock-latency-ns = <32000>;
+		};
+		opp05 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-level = <5>;
+			clock-latency-ns = <35000>;
+		};
+		opp06 {
+			opp-hz = /bits/ 64 <1512000000>;
+			opp-level = <6>;
+			clock-latency-ns = <45000>;
+		};
+		opp07 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-level = <7>;
+			clock-latency-ns = <58000>;
+		};
+#if 0
+		/* Not available until CPU deep sleep is implemented */
+		opp08 {
+			opp-hz = /bits/ 64 <1844000000>;
+			opp-level = <8>;
+			clock-latency-ns = <58000>;
+			turbo-mode;
+		};
+#endif
+	};
+};
+
 /*
  * The A9 was made by two separate fabs on two different process
  * nodes: Samsung made the S8000 (APL0898) on 14nm and TSMC made
diff --git a/arch/arm64/boot/dts/apple/s8003.dtsi b/arch/arm64/boot/dts/apple/s8003.dtsi
index 807e3452f8a7..79df5c783260 100644
--- a/arch/arm64/boot/dts/apple/s8003.dtsi
+++ b/arch/arm64/boot/dts/apple/s8003.dtsi
@@ -4,11 +4,62 @@
  *
  * Other names: H8P, "Malta"
  *
- * Copyright (c) 2022, Konrad Dybcio <konradybcio@kernel.org>
+ * Copyright (c) 2024, Nick Chan <towinchenmi@gmail.com>
  */
 
 #include "s800-0-3.dtsi"
 
+/ {
+	twister_opp: opp-table {
+		compatible = "operating-points-v2";
+
+		opp01 {
+			opp-hz = /bits/ 64 <300000000>;
+			opp-level = <1>;
+			clock-latency-ns = <500>;
+		};
+		opp02 {
+			opp-hz = /bits/ 64 <396000000>;
+			opp-level = <2>;
+			clock-latency-ns = <45000>;
+		};
+		opp03 {
+			opp-hz = /bits/ 64 <600000000>;
+			opp-level = <3>;
+			clock-latency-ns = <22000>;
+		};
+		opp04 {
+			opp-hz = /bits/ 64 <912000000>;
+			opp-level = <4>;
+			clock-latency-ns = <25000>;
+		};
+		opp05 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-level = <5>;
+			clock-latency-ns = <28000>;
+		};
+		opp06 {
+			opp-hz = /bits/ 64 <1512000000>;
+			opp-level = <6>;
+			clock-latency-ns = <35000>;
+		};
+		opp07 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-level = <7>;
+			clock-latency-ns = <38000>;
+		};
+#if 0
+		/* Not available until CPU deep sleep is implemented */
+		opp08 {
+			opp-hz = /bits/ 64 <1844000000>;
+			opp-level = <8>;
+			clock-latency-ns = <38000>;
+			turbo-mode;
+		};
+#endif
+	};
+};
+
 /*
  * The A9 was made by two separate fabs on two different process
  * nodes: Samsung made the S8000 (APL0898) on 14nm and TSMC made