3 ms·
https://elinux.org/images/d/d4/MischaJonker_ARM11_power_management_CELF_ELC_2008.pdf https://elinux.org/images/d/d4/MischaJonker_ARM11_power_mana... ARM11 is w
by Topgamer7 5y ago
https://elinux.org/images/d/d4/MischaJonker_ARM11_power_management_CELF_ELC_2008.pdf https://elinux.org/images/d/d4/MischaJonker_ARM11_power_mana...
ARM11 is what the raspberry pi 4 BCM module uses from what I could tell.
Looks like your best bet is to set the cpu freq down.
I didn't see anything useful in the Broadcom BCM2711 datasheet.
- phh 5y agoNo it isn't? ARM11 are ARMv6 CPUs, Raspberry Pi4 are ARMv8, two generations of difference, and that's just the instruction set. ARM11/ARMv6 says nothing about power management, it's up to the SoC. (ARMv8 does say a few things about power management, but Broadcom/Rasperry Pi4 chose to ignore it)
- Topgamer7 5y agoAh, well. I did allude to I wasn't certain. That's what I could tell from 5 minutes of sleuthing. Either way the conclusion is the same, you don't have good control to reduce power consumption other than clocking down.