diff mbox series

[v7,2/2] riscv: dts: starfive: jh7110-common: Fix lower rate of CPUfreq by setting PLL0 rate to 1.5GHz

Message ID 20240826080430.179788-3-xingyu.wu@starfivetech.com (mailing list archive)
State Not Applicable, archived
Headers show
Series Add notifier for PLL0 clock and set it 1.5GHz on the JH7110 SoC | expand

Commit Message

Xingyu Wu Aug. 26, 2024, 8:04 a.m. UTC
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>
---
 arch/riscv/boot/dts/starfive/jh7110-common.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Hal Feng Aug. 27, 2024, 5:52 a.m. UTC | #1
> On 26.08.24 16:05, Xingyu Wu wrote:
> 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>
diff mbox series

Patch

diff --git a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
index ca2d44d59d48..c7771b3b6475 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110-common.dtsi
@@ -365,6 +365,12 @@  spi_dev0: spi@0 {
 	};
 };
 
+&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 {