Why is R6S Cortex-A76 clock limited on FriendlyWrt?
Posted: Wed Dec 17, 2025 8:30 pm
I have noticed that when my NanoPi R6S runs FriendlyWrt, the clock speed of its four Cortex-A76 cores is limited to values below 2400 MHz, whereas the official OpenWrt version does not have this limitation.
Oddly, the Cortex-A76 cores under FriendlyWrt reach a maximum clock speed about 100 to 150 MHz lower.
Is there a way to unlock the Cortex-A76 clock speed up to 2.4 GHz?
For the record, I would like to point out that my NanoPi R6S ran OpenWrt with the scaling_governor set to performance, meaning the cores were constantly at 2.4 GHz, for a full year without any stability or temperature issues.
Now I would like to switch back to FriendlyWrt because I want to use my R6S not only as a home router but also as a media server with Jellyfin. Unfortunately, official OpenWrt does not support the hardware video transcoding of Rockchip RK3588S that is only available with FriendlyWrt.
Code: Select all
| | Quad-core ARM Cortex-A55 | Quad-core ARM Cortex-A76 |
|-------------|----------|----------|----------|----------|----------|----------|----------|---------|
| | Core0 | Core1 | Core2 | Core3 | Core4 | Core5 | Core6 | Core7 |
| OpenWrt | 1800MHz | 1800MHz | 1800MHz | 1800MHz | 2400MHz | 2400MHz | 2400MHz | 2400MHz |
| FriendlyWrt | 1800MHz | 1800MHz | 1800MHz | 1800MHz | 2304MHz | 2304MHz | 2256MHz | 2256MHz |
Oddly, the Cortex-A76 cores under FriendlyWrt reach a maximum clock speed about 100 to 150 MHz lower.
Is there a way to unlock the Cortex-A76 clock speed up to 2.4 GHz?
For the record, I would like to point out that my NanoPi R6S ran OpenWrt with the scaling_governor set to performance, meaning the cores were constantly at 2.4 GHz, for a full year without any stability or temperature issues.
Now I would like to switch back to FriendlyWrt because I want to use my R6S not only as a home router but also as a media server with Jellyfin. Unfortunately, official OpenWrt does not support the hardware video transcoding of Rockchip RK3588S that is only available with FriendlyWrt.