arm64: dts: rockchip: Add rk3528 CPU frequency scaling support

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By default, the CPUs on RK3528 operates at 1.5GHz. Add CPU frequency and
voltage mapping to the device tree to enable dynamic scaling via cpufreq.

The OPP values come from downstream kernel[1], using a voltage close to
the actual frequency. Frequencies below 1.2GHz have been removed due to
the same voltage.

[1] https://github.com/rockchip-linux/kernel/blob/develop-5.10/arch/arm64/boot/dts/rockchip/rk3528.dtsi

Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://lore.kernel.org/r/20250801080025.558935-2-amadeus@jmu.edu.cn
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

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Chukun Pan 2025-08-01 16:00:25 +08:00 • committed by Heiko Stuebner

parent fdab018643

commit 42bbc32c7e

1 changed files with 39 additions and 0 deletions

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arch/arm64/boot/dts/rockchip/rk3528.dtsi

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