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friendlyarm / h3_lichee

BSP for FriendlyARM NanoPi H3
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Wrong dvfs operation points #2

Closed ThomasKaiser closed 7 years ago

ThomasKaiser commented 8 years ago

One of our devs brought to my attention that your dvfs settings (I blindly copied) lead to wrong dvfs behaviour. The leading 0 has to be eliminated here.

Detailed explanation: https://github.com/igorpecovnik/lib/issues/284#issuecomment-216655399

wuweidong0107 commented 8 years ago

Hello, Thomas.

I've tried: [dvfs_table] pmuic_type = 1 pmu_gpio0 = port:PL06<1><1><2><1> pmu_level0 = 11300 pmu_level1 = 1100 ;extremity_freq = 1200000000 max_freq = 1200000000 min_freq = 480000000 boot_freq = 1200000000 LV_count = 4

LV1_freq = 1200000000 LV1_volt = 1300

LV2_freq = 1008000000 LV2_volt = 1300

LV3_freq = 816000000 LV3_volt = 1100

LV4_freq = 480000000 LV4_volt = 1100

I got result(without hdmi): cpu=0 online=1 temperature=48 governor=interactive cur_freq=480000 cpu=1 online=1 temperature=48 governor=interactive cur_freq=480000 cpu=2 online=1 temperature=48 governor=interactive cur_freq=480000 cpu=3 online=1 temperature=48 governor=interactive cur_freq=480000

ThomasKaiser commented 8 years ago

Hmm... the temperature looks like the SoC is fed with 1.3V then. Do you really use a programmable voltage generator or not?

wuweidong0107 commented 8 years ago

The multimeter shows 1.094v when cpu=0 online=1 temperature=50 governor=userspace cur_freq=480000...

ThomasKaiser commented 8 years ago

Is that Armbian or your OS image using u-boot from BSP sources? If the latter the temperature would make sense. For still unknown reasons the thermal readouts when using mainline u-boot (as Armbian does) are lower. We suspect it's some clock based stuff but at least it's a known 'problem' that Armbian shows lower temperatures than OS images using u-boot 2011.09.

wuweidong0107 commented 8 years ago

Test Armbian: cpu=0 online=1 temperature=52 governor=interactive cur_freq=240000 cpu=1 online=1 temperature=52 governor=interactive cur_freq=240000 cpu=2 online=1 temperature=52 governor=interactive cur_freq=240000 cpu=3 online=1 temperature=52 governor=interactive cur_freq=240000

$ uptime 11:34:56 up 8 min, 1 user, load average: 0.63, 0.24, 0.13

ThomasKaiser commented 8 years ago

BTW: We improved our THS settings a bit and I hope we also fixed board auto detection reliably in Armbian 5.13.

Can you please give this OS image a try and test it on NanoPi M1 with 512MB and 1GB and get back to me with feedback?