[PATCH v2 3/6] arm64: dts: allwinner: a100: Add CPU Operating Performance Points table

[Andre Przywara]

Add an Operating Performance Points table for the CPU cores to
enable Dynamic Voltage & Frequency Scaling on the A100.

Signed-off-by: Shuosheng Huang <huangshuosheng at allwinnertech.com>
[masterr3c0rd at epochal.quest: fix typos in -cpu-opp, use compatible]
Signed-off-by: Cody Eksal <masterr3c0rd at epochal.quest>
Link: https://patch.msgid.link/20241031070232.1793078-14-masterr3c0rd@epochal.quest
Signed-off-by: Chen-Yu Tsai <wens at csie.org>

[ upstream commit: a8181e6861fec3068f393d77ff81b2aaf4ea4203 ]
---
 .../allwinner/sun50i-a100-allwinner-perf1.dts |  5 ++
 .../arm64/allwinner/sun50i-a100-cpu-opp.dtsi  | 90 +++++++++++++++++++
 .../src/arm64/allwinner/sun50i-a100.dtsi      |  8 ++
 3 files changed, 103 insertions(+)
 create mode 100644 dts/upstream/src/arm64/allwinner/sun50i-a100-cpu-opp.dtsi

diff --git a/dts/upstream/src/arm64/allwinner/sun50i-a100-allwinner-perf1.dts b/dts/upstream/src/arm64/allwinner/sun50i-a100-allwinner-perf1.dts
index a387bccdcef..a7e3be0155a 100644
--- a/dts/upstream/src/arm64/allwinner/sun50i-a100-allwinner-perf1.dts
+++ b/dts/upstream/src/arm64/allwinner/sun50i-a100-allwinner-perf1.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include "sun50i-a100.dtsi"
+#include "sun50i-a100-cpu-opp.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
 
@@ -38,6 +39,10 @@
 	status = "okay";
 };
 
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
 &pio {
 	vcc-pb-supply = <&reg_dcdc1>;
 	vcc-pc-supply = <&reg_eldo1>;
diff --git a/dts/upstream/src/arm64/allwinner/sun50i-a100-cpu-opp.dtsi b/dts/upstream/src/arm64/allwinner/sun50i-a100-cpu-opp.dtsi
new file mode 100644
index 00000000000..c6a2efa037d
--- /dev/null
+++ b/dts/upstream/src/arm64/allwinner/sun50i-a100-cpu-opp.dtsi
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+// Copyright (c) 2020 Yangtao Li <frank at allwinnertech.com>
+// Copyright (c) 2020 ShuoSheng Huang <huangshuosheng at allwinnertech.com>
+
+/ {
+	cpu_opp_table: opp-table-cpu {
+		compatible = "allwinner,sun50i-a100-operating-points";
+		nvmem-cells = <&cpu_speed_grade>;
+		opp-shared;
+
+		opp-408000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <408000000>;
+
+			opp-microvolt-speed0 = <900000>;
+			opp-microvolt-speed1 = <900000>;
+			opp-microvolt-speed2 = <900000>;
+		};
+
+		opp-600000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <600000000>;
+
+			opp-microvolt-speed0 = <900000>;
+			opp-microvolt-speed1 = <900000>;
+			opp-microvolt-speed2 = <900000>;
+		};
+
+		opp-816000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <816000000>;
+
+			opp-microvolt-speed0 = <940000>;
+			opp-microvolt-speed1 = <900000>;
+			opp-microvolt-speed2 = <900000>;
+		};
+
+		opp-1080000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1080000000>;
+
+			opp-microvolt-speed0 = <1020000>;
+			opp-microvolt-speed1 = <980000>;
+			opp-microvolt-speed2 = <950000>;
+		};
+
+		opp-1200000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1200000000>;
+
+			opp-microvolt-speed0 = <1100000>;
+			opp-microvolt-speed1 = <1020000>;
+			opp-microvolt-speed2 = <1000000>;
+		};
+
+		opp-1320000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1320000000>;
+
+			opp-microvolt-speed0 = <1160000>;
+			opp-microvolt-speed1 = <1060000>;
+			opp-microvolt-speed2 = <1030000>;
+		};
+
+		opp-1464000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1464000000>;
+
+			opp-microvolt-speed0 = <1180000>;
+			opp-microvolt-speed1 = <1180000>;
+			opp-microvolt-speed2 = <1130000>;
+		};
+	};
+};
+
+&cpu0 {
+	operating-points-v2 = <&cpu_opp_table>;
+};
+
+&cpu1 {
+	operating-points-v2 = <&cpu_opp_table>;
+};
+
+&cpu2 {
+	operating-points-v2 = <&cpu_opp_table>;
+};
+
+&cpu3 {
+	operating-points-v2 = <&cpu_opp_table>;
+};
diff --git a/dts/upstream/src/arm64/allwinner/sun50i-a100.dtsi b/dts/upstream/src/arm64/allwinner/sun50i-a100.dtsi
index a24adba201a..f9f6fea03b7 100644
--- a/dts/upstream/src/arm64/allwinner/sun50i-a100.dtsi
+++ b/dts/upstream/src/arm64/allwinner/sun50i-a100.dtsi
@@ -23,6 +23,7 @@
 			device_type = "cpu";
 			reg = <0x0>;
 			enable-method = "psci";
+			clocks = <&ccu CLK_CPUX>;
 		};
 
 		cpu1: cpu at 1 {
@@ -30,6 +31,7 @@
 			device_type = "cpu";
 			reg = <0x1>;
 			enable-method = "psci";
+			clocks = <&ccu CLK_CPUX>;
 		};
 
 		cpu2: cpu at 2 {
@@ -37,6 +39,7 @@
 			device_type = "cpu";
 			reg = <0x2>;
 			enable-method = "psci";
+			clocks = <&ccu CLK_CPUX>;
 		};
 
 		cpu3: cpu at 3 {
@@ -44,6 +47,7 @@
 			device_type = "cpu";
 			reg = <0x3>;
 			enable-method = "psci";
+			clocks = <&ccu CLK_CPUX>;
 		};
 	};
 
@@ -175,6 +179,10 @@
 			ths_calibration: calib at 14 {
 				reg = <0x14 8>;
 			};
+
+			cpu_speed_grade: cpu-speed-grade at 1c {
+				reg = <0x1c 0x2>;
+			};
 		};
 
 		watchdog at 30090a0 {
-- 
2.46.3