[PATCH] riscv: dts: spacemit: orangepi-rv2: Add cpu scaling for K1, SoC

[Vincent Legoll]

[RESEND] as I cannot see yesterday's


Hello,



I tested (on OrangePi RV2) the attached patch applied over

spacemit/for-next + Shuwei Wu's V3 series.


This is a copy/paste of Shuwei Wu's work, so I don't know

if I can submit this with my SoB or if it should be done

differently, please advise.


Anyways, you can add my:

Tested-by: Vincent Legoll <vincent.legoll@xxxxxxxxx> # OrangePi-RV2


To the relevant patches from your series, if that's useful,

because it looks like it is working properly:


On Void linux (musl libc):


uname -a
Linux opirv2 7.1.0-rc1-00043-gb860bca13be4 #14 SMP PREEMPT Sat Jun 13 
11:02:13 CEST 2026 riscv64 GNU/Linux

awk --version | head -1
GNU Awk 5.3.2, API 4.0

echo userspace > /sys/devices/system/cpu/cpufreq/policy0/scaling_governor

echo 1600000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
time awk 'BEGIN{for(i=0;i<1000000;i++){}}'
real    0m0.300s
user    0m0.299s
sys     0m0.001s

echo 1228800 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
time awk 'BEGIN{for(i=0;i<1000000;i++){}}'
real    0m0.432s
user    0m0.429s
sys     0m0.004s

echo 1000000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
time awk 'BEGIN{for(i=0;i<1000000;i++){}}'
real    0m0.476s
user    0m0.476s
sys     0m0.001s

echo 819000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
time awk 'BEGIN{for(i=0;i<1000000;i++){}}'
real    0m0.582s
user    0m0.581s
sys     0m0.001s

echo 614400 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
time awk 'BEGIN{for(i=0;i<1000000;i++){}}'
real    0m0.778s
user    0m0.773s
sys     0m0.005s

--

Vincent Legoll

From 9924789655ae5f4f98e7a5cdc3df3f34e7bfb659 Mon Sep 17 00:00:00 2001
From: Vincent Legoll <vincent.legoll@xxxxxxxxx>
Date: Sat, 13 Jun 2026 10:49:34 +0200
Subject: [PATCH] riscv: dts: spacemit: orangepi-rv2: Add cpu scaling for K1
 SoC

Enable CPU DVFS on OrangePi RV2

This is a copy/paste from Shuwei Wu's BPI-F3 DTS modifications

Signed-off-by: Vincent Legoll <vincent.legoll@xxxxxxxxx>
---
 .../boot/dts/spacemit/k1-orangepi-rv2.dts     | 35 ++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
index 7c49bce427f3..62d25f579af6 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
@@ -8,6 +8,7 @@
 
 #include "k1.dtsi"
 #include "k1-pinctrl.dtsi"
+#include "k1-opp.dtsi"
 
 / {
 	model = "OrangePi RV2";
@@ -80,6 +81,38 @@ &combo_phy {
 	status = "okay";
 };
 
+&cpu_0 {
+       cpu-supply = <&buck1_0v9>;
+};
+
+&cpu_1 {
+       cpu-supply = <&buck1_0v9>;
+};
+
+&cpu_2 {
+       cpu-supply = <&buck1_0v9>;
+};
+
+&cpu_3 {
+       cpu-supply = <&buck1_0v9>;
+};
+
+&cpu_4 {
+       cpu-supply = <&buck1_0v9>;
+};
+
+&cpu_5 {
+       cpu-supply = <&buck1_0v9>;
+};
+
+&cpu_6 {
+       cpu-supply = <&buck1_0v9>;
+};
+
+&cpu_7 {
+       cpu-supply = <&buck1_0v9>;
+};
+
 &emmc {
 	bus-width = <8>;
 	mmc-hs400-1_8v;
@@ -162,7 +195,7 @@ pmic@41 {
 		dldoin2-supply = <&buck5>;
 
 		regulators {
-			buck1 {
+			buck1_0v9: buck1 {
 				regulator-min-microvolt = <500000>;
 				regulator-max-microvolt = <3450000>;
 				regulator-ramp-delay = <5000>;
-- 
2.54.0