From 04202df5cb497b1934c95211cf43784ef62245a4 Mon Sep 17 00:00:00 2001
From: Tianling Shen <cnsztl@gmail.com>
Date: Sat, 19 Dec 2020 12:42:27 +0000
Subject: [PATCH] rockchip: rk3399: overclock to 2.2/1.8 GHz for NanoPi4 devices

It's stable enough to overclock cpu frequency to 2.2/1.8 GHz,
and for better performance.

Signed-off-by: Tianling Shen <cnsztl@gmail.com>
Co-authored-by: gzelvis <gzelvis@gmail.com>
---
 .../boot/dts/rockchip/rk3399-nanopi4-opp.dtsi | 156 ++++++++++++++++++
 .../boot/dts/rockchip/rk3399-nanopi4.dtsi     |   2 +-
 2 files changed, 157 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-nanopi4-opp.dtsi

--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi4-opp.dtsi
@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2016-2017 Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * Copyright (c) 2020 Tianling Shen <cnsztl@gmail.com>
+ * Copyright (c) 2020 gzelvis <gzelvis@gmail.com>
+ */
+
+/ {
+	cluster0_opp: opp-table0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp00 {
+			opp-hz = /bits/ 64 <408000000>;
+			opp-microvolt = <800000>;
+			clock-latency-ns = <40000>;
+		};
+		opp01 {
+			opp-hz = /bits/ 64 <600000000>;
+			opp-microvolt = <800000>;
+		};
+		opp02 {
+			opp-hz = /bits/ 64 <816000000>;
+			opp-microvolt = <850000>;
+		};
+		opp03 {
+			opp-hz = /bits/ 64 <1008000000>;
+			opp-microvolt = <925000>;
+		};
+		opp04 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <1000000>;
+		};
+		opp05 {
+			opp-hz = /bits/ 64 <1416000000>;
+			opp-microvolt = <1125000>;
+		};
+		opp06 {
+			opp-hz = /bits/ 64 <1608000000>;
+			opp-microvolt = <1225000>;
+		};
+		opp07 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <1275000>;
+		};
+	};
+
+	cluster1_opp: opp-table1 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp00 {
+			opp-hz = /bits/ 64 <408000000>;
+			opp-microvolt = <800000>;
+			clock-latency-ns = <40000>;
+		};
+		opp01 {
+			opp-hz = /bits/ 64 <600000000>;
+			opp-microvolt = <800000>;
+		};
+		opp02 {
+			opp-hz = /bits/ 64 <816000000>;
+			opp-microvolt = <825000>;
+		};
+		opp03 {
+			opp-hz = /bits/ 64 <1008000000>;
+			opp-microvolt = <875000>;
+		};
+		opp04 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <950000>;
+		};
+		opp05 {
+			opp-hz = /bits/ 64 <1416000000>;
+			opp-microvolt = <1025000>;
+		};
+		opp06 {
+			opp-hz = /bits/ 64 <1608000000>;
+			opp-microvolt = <1100000>;
+		};
+		opp07 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <1200000>;
+		};
+		opp08 {
+			opp-hz = /bits/ 64 <2016000000>;
+			opp-microvolt = <1250000>;
+		};
+		opp09 {
+			opp-hz = /bits/ 64 <2208000000>;
+			opp-microvolt = <1325000>;
+		};
+	};
+
+	gpu_opp_table: opp-table2 {
+		compatible = "operating-points-v2";
+
+		opp00 {
+			opp-hz = /bits/ 64 <200000000>;
+			opp-microvolt = <800000>;
+		};
+		opp01 {
+			opp-hz = /bits/ 64 <297000000>;
+			opp-microvolt = <800000>;
+		};
+		opp02 {
+			opp-hz = /bits/ 64 <400000000>;
+			opp-microvolt = <825000>;
+		};
+		opp03 {
+			opp-hz = /bits/ 64 <500000000>;
+			opp-microvolt = <875000>;
+		};
+		opp04 {
+			opp-hz = /bits/ 64 <600000000>;
+			opp-microvolt = <925000>;
+		};
+		opp05 {
+			opp-hz = /bits/ 64 <800000000>;
+			opp-microvolt = <1100000>;
+		};
+	};
+};
+
+&cpu_l0 {
+	operating-points-v2 = <&cluster0_opp>;
+};
+
+&cpu_l1 {
+	operating-points-v2 = <&cluster0_opp>;
+};
+
+&cpu_l2 {
+	operating-points-v2 = <&cluster0_opp>;
+};
+
+&cpu_l3 {
+	operating-points-v2 = <&cluster0_opp>;
+};
+
+&cpu_b0 {
+	operating-points-v2 = <&cluster1_opp>;
+};
+
+&cpu_b1 {
+	operating-points-v2 = <&cluster1_opp>;
+};
+
+&gpu {
+	operating-points-v2 = <&gpu_opp_table>;
+};
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi4.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi4.dtsi
@@ -14,7 +14,7 @@
 /dts-v1/;
 #include <dt-bindings/input/linux-event-codes.h>
 #include "rk3399.dtsi"
-#include "rk3399-opp.dtsi"
+#include "rk3399-nanopi4-opp.dtsi"
 
 / {
 	chosen {
--- a/arch/arm64/boot/dts/rockchip/rk3399-doornet2.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-doornet2.dtsi
@@ -3,7 +3,7 @@
 /dts-v1/;
 #include <dt-bindings/input/linux-event-codes.h>
 #include "rk3399.dtsi"
-#include "rk3399-opp.dtsi"
+#include "rk3399-nanopi4-opp.dtsi"
 
 / {
 	chosen {