Subject: [PATCH v5 3/9] arm64: dts: allwinner: h6: Add CPU Operating Performance Points table

From: Clément Péron <[email-masked]>
Date: Mon, 20 Apr 2020 15:00:15 +0200

From: Ondrej Jirman <[email-masked]>

Add an Operating Performance Points table for the CPU cores to
enable Dynamic Voltage & Frequency Scaling on the H6.

Signed-off-by: Ondrej Jirman <[email-masked]>
Signed-off-by: Clément Péron <[email-masked]>
---
 .../boot/dts/allwinner/sun50i-h6-cpu-opp.dtsi | 121 ++++++++++++++++++
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi  |   4 +
 2 files changed, 125 insertions(+)
 create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h6-cpu-opp.dtsi

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-cpu-opp.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6-cpu-opp.dtsi
new file mode 100644
index 000000000000..9ebd97b04b1a
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-cpu-opp.dtsi
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+// Copyright (C) 2020 Ondrej Jirman <[email-masked]>
+// Copyright (C) 2020 Clément Péron <[email-masked]>
+
+/ {
+	cpu_opp_table: cpu-opp-table {
+		compatible = "allwinner,sun50i-h6-operating-points";
+		nvmem-cells = <&cpu_speed_grade>;
+		opp-shared;
+
+		opp@480000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <480000000>;
+
+			opp-microvolt-speed0 = <880000>;
+			opp-microvolt-speed1 = <820000>;
+			opp-microvolt-speed2 = <820000>;
+		};
+
+		opp@720000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <720000000>;
+
+			opp-microvolt-speed0 = <880000>;
+			opp-microvolt-speed1 = <820000>;
+			opp-microvolt-speed2 = <820000>;
+		};
+
+		opp@816000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <816000000>;
+
+			opp-microvolt-speed0 = <880000>;
+			opp-microvolt-speed1 = <820000>;
+			opp-microvolt-speed2 = <820000>;
+		};
+
+		opp@888000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <888000000>;
+
+			opp-microvolt-speed0 = <880000>;
+			opp-microvolt-speed1 = <820000>;
+			opp-microvolt-speed2 = <820000>;
+		};
+
+		opp@1080000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1080000000>;
+
+			opp-microvolt-speed0 = <940000>;
+			opp-microvolt-speed1 = <880000>;
+			opp-microvolt-speed2 = <880000>;
+		};
+
+		opp@1320000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1320000000>;
+
+			opp-microvolt-speed0 = <1000000>;
+			opp-microvolt-speed1 = <940000>;
+			opp-microvolt-speed2 = <940000>;
+		};
+
+		opp@1488000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1488000000>;
+
+			opp-microvolt-speed0 = <1060000>;
+			opp-microvolt-speed1 = <1000000>;
+			opp-microvolt-speed2 = <1000000>;
+		};
+
+		opp@1608000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1608000000>;
+
+			opp-microvolt-speed0 = <1090000>;
+			opp-microvolt-speed1 = <1030000>;
+			opp-microvolt-speed2 = <1030000>;
+		};
+
+		opp@1704000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1704000000>;
+
+			opp-microvolt-speed0 = <1120000>;
+			opp-microvolt-speed1 = <1060000>;
+			opp-microvolt-speed2 = <1060000>;
+		};
+
+		opp@1800000000 {
+			clock-latency-ns = <244144>; /* 8 32k periods */
+			opp-hz = /bits/ 64 <1800000000>;
+
+			opp-microvolt-speed0 = <1160000>;
+			opp-microvolt-speed1 = <1100000>;
+			opp-microvolt-speed2 = <1100000>;
+		};
+	};
+};
+
+&cpu0 {
+	operating-points-v2 = <&cpu_opp_table>;
+	#cooling-cells = <2>;
+};
+
+&cpu1 {
+	operating-points-v2 = <&cpu_opp_table>;
+	#cooling-cells = <2>;
+};
+
+&cpu2 {
+	operating-points-v2 = <&cpu_opp_table>;
+	#cooling-cells = <2>;
+};
+
+&cpu3 {
+	operating-points-v2 = <&cpu_opp_table>;
+	#cooling-cells = <2>;
+};
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 60da1627772b..83e32f9c4977 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -258,6 +258,10 @@
 			ths_calibration: thermal-sensor-calibration@14 {
 				reg = <0x14 0x8>;
 			};
+
+			cpu_speed_grade: cpu-speed-grade@1c {
+				reg = <0x1c 0x4>;
+			};
 		};
 
 		watchdog: watchdog@30090a0 {
-- 
2.20.1

_______________________________________________
linux-arm-kernel mailing list
[email-masked]
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel