From 17787d4089a192be7a1908c096f3c0cb3f82bdff Mon Sep 17 00:00:00 2001
From: Xingyu Wu <xingyu.wu@starfivetech.com>
Date: Mon, 26 Aug 2024 16:04:30 +0800
Subject: [PATCH] riscv: dts: starfive: jh7110-common: Fix lower rate of
 CPUfreq by setting PLL0 rate to 1.5GHz

BugLink: https://bugs.launchpad.net/bugs/2086138

[ Upstream commit 61f2e8a3a94175dbbaad6a54f381b2a505324610 ]

CPUfreq supports 4 cpu frequency loads on 375/500/750/1500MHz.
But now PLL0 rate is 1GHz and the cpu frequency loads become
250/333/500/1000MHz in fact.

The PLL0 rate should be default set to 1.5GHz and set the
cpu_core rate to 500MHz in safe.

Fixes: e2c510d6d630 ("riscv: dts: starfive: Add cpu scaling for JH7110 SoC")
Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Hal Feng <hal.feng@starfivetech.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[koichiroden: adjusted for the older kernel without jh7110-common.dtsi]
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
---
 .../boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
index c9bf3e0332f6..79a93cb95f8b 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
@@ -316,6 +316,12 @@
 	};
 };
 
+&syscrg {
+	assigned-clocks = <&syscrg JH7110_SYSCLK_CPU_CORE>,
+			  <&pllclk JH7110_PLLCLK_PLL0_OUT>;
+	assigned-clock-rates = <500000000>, <1500000000>;
+};
+
 &sysgpio {
 	i2c0_pins: i2c0-0 {
 		i2c-pins {