arm64: dts: apple: Add cpufreq nodes for the A10(X) SoCs

The cpufreq hardware on the A10(X) is compatible with the M1 and only DT additions are needed. Signed-off-by: Nick Chan <[email protected]>
asdfugil · Aug 19, 2024 · 80c609b · 80c609b
1 parent 589a52b
commit 80c609b
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Showing 6 changed files with 89 additions and 4 deletions.
diff --git a/arch/arm64/boot/dts/apple/t8010-7.dtsi b/arch/arm64/boot/dts/apple/t8010-7.dtsi
@@ -5,7 +5,7 @@
  * Copyright (c) 2022, Konrad Dybcio <[email protected]>
  */
 
-#include "t8010.dtsi"
+#include "t8010-fast.dtsi"
 #include <dt-bindings/input/input.h>
 
 / {

diff --git a/arch/arm64/boot/dts/apple/t8010-fast.dtsi b/arch/arm64/boot/dts/apple/t8010-fast.dtsi
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Apple T8010 "A10" common device tree for non-iPod touch 7 devices
+ *
+ * Copyright (c) 2024, Nick Chan <[email protected]>
+ */
+
+#include "t8010.dtsi"
+
+/ {
+	opp: opp-table-0 {
+		opp08 {
+			opp-hz = /bits/ 64 <1944000000>;
+			opp-level = <8>;
+		};
+
+		opp09 {
+			opp-hz = /bits/ 64 <2244000000>;
+			opp-level = <9>;
+		};
+
+		opp10 {
+			opp-hz = /bits/ 64 <2340000000>;
+			opp-level = <10>;
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/apple/t8010-ipad6.dtsi b/arch/arm64/boot/dts/apple/t8010-ipad6.dtsi
@@ -5,7 +5,7 @@
  * Copyright (c) 2022, Konrad Dybcio <[email protected]>
  */
 
-#include "t8010.dtsi"
+#include "t8010-fast.dtsi"
 #include <dt-bindings/input/input.h>
 
 / {

diff --git a/arch/arm64/boot/dts/apple/t8010-ipad7.dtsi b/arch/arm64/boot/dts/apple/t8010-ipad7.dtsi
@@ -5,7 +5,7 @@
  * Copyright (c) 2022, Konrad Dybcio <[email protected]>
  */
 
-#include "t8010.dtsi"
+#include "t8010-fast.dtsi"
 
 /*
  * The iPad 7 seems to be only an iteration over the iPad 6 with some small changes, like the

diff --git a/arch/arm64/boot/dts/apple/t8010.dtsi b/arch/arm64/boot/dts/apple/t8010.dtsi
@@ -56,6 +56,8 @@
 			compatible = "apple,hurricane-zephyr";
 			reg = <0x0 0x0>;
 			cpu-release-addr = <0 0>; /* To be filled by loader */
+			operating-points-v2 = <&opp>;
+			performance-domains = <&cpufreq>;
 			enable-method = "spin-table";
 			device-type = "cpu";
 		};
@@ -64,11 +66,59 @@
 			compatible = "apple,hurricane-zephyr";
 			reg = <0x0 0x1>;
 			cpu-release-addr = <0 0>; /* To be filled by loader */
+			operating-points-v2 = <&opp>;
+			performance-domains = <&cpufreq>;
 			enable-method = "spin-table";
 			device-type = "cpu";
 		};
 	};
 
+	opp: opp-table-0 {
+		compatible = "operating-points-v2";
+
+		/* The E-core frequencies are adjusted so performance scales
+		 * linearly with reported clock speed */
+
+		opp01 {
+			opp-hz = /bits/ 64 <149000000>; /* 396 MHz, E-core */
+			opp-level = <1>;
+		};
+
+		opp02 {
+			opp-hz = /bits/ 64 <275000000>; /* 732 MHz, E-core */
+			opp-level = <2>;
+		};
+
+		opp03 {
+			opp-hz = /bits/ 64 <410000000>; /* 1092 MHz, E-core */
+			opp-level = <3>;
+		};
+
+		/* The following operating points are handled by the P-cores */		
+		opp04 {
+			opp-hz = /bits/ 64 <756000000>;
+			opp-level = <4>;
+		};
+
+		opp05 {
+			opp-hz = /bits/ 64 <1056000000>;
+			opp-level = <5>;
+		};
+
+		opp06 {
+			opp-hz = /bits/ 64 <1356000000>;
+			opp-level = <6>;
+		};
+
+		opp07 {
+			opp-hz = /bits/ 64 <1644000000>;
+			opp-level = <7>;
+		};
+
+		/* The iPod Touch 7 supports up to 1.6 GHz, faster operating
+		 * points for other devices are in t8010-fast.dtsi */
+	};
+
 	memory@800000000 {
 		device_type = "memory";
 		/* To be filled in by the bootloader (based on XNU BootArgs). */
@@ -93,6 +143,12 @@
 		nonposted-mmio;
 		ranges;
 
+		cpufreq: performance-controller@202f20000 {
+			compatible = "apple,t8010-cluster-cpufreq", "apple,t8103-cluster-cpufreq", "apple,cluster-cpufreq";
+			reg = <0x2 0x2f20000 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/t8011.dtsi b/arch/arm64/boot/dts/apple/t8011.dtsi
@@ -5,14 +5,16 @@
  * Copyright (c) 2022, Konrad Dybcio <[email protected]>
  */
 
-#include "t8010.dtsi"
+#include "t8010-fast.dtsi"
 
 / {
 	cpus {
 		cpu2: cpu@2 {
 			compatible = "apple,hurricane-zephyr";
 			reg = <0x0 0x2>;
 			cpu-release-addr = <0 0>; /* To be filled by loader */
+			operating-points-v2 = <&opp>;
+			performance-domains = <&cpufreq>;
 			enable-method = "spin-table";
 			device-type = "cpu";
 		};