use more powerfull 'cpuburn-a53' to do pressure test.
power meter shows that 'cpuburn-a53' consumes much more power than
'stress -c 4' in the same condition. 930mV is not enough when running
'cpuburn-a53' meanwhile 950mV is the minimum voltage.
When running 'cpuburn-a53' at 1.8G, h6 consumes lots of power and generate
such amount of heat that an active cooling is necessary otherwise h6
gets overheat and system crashes. Even with active cooling and heatsink
is in low temperature the junction temperature is still quit high that
it reaches about 88~90 ℃ . Maybe the high thermal resistance of plastic
package causes the problem.
* [ general ] Change Toolchain download method. Introduce torrent downloads by using Aria2. If torrent download fails it proceeds to download from servers. It can download from all mirrors at once, so download speed is dramatically increased. @mzhboy DOWNLOAD_MIRROR parameter is not needed here anymore. The same method is used to download rootfilesystem cache. Based on ideas from here https://github.com/armbian/build/pull/1364
* Added yet another mirror for speeding up the download process, few small adjustements for torrent downloading
* Optimising direct download when DOWNLOAD_MIRROR is set to 'china' due to aria2 download limitations
* Both mirrors support HTTPS, changing
* [sunxi-dev][h6]update orangepi lite2 dts file patch
* [sunxi-dev][h6]update patch for sun50i-h6.dtsi
* [sunxi-dev][h6] new operation voltage table of allwinner h6
The correct operation voltages are find out after many reboots and test (over 20+).
the original 1.16v@1.64/1.8GHz was too high since standard cell voltage
of 28nm@HPC is 0.9v, h6 got overheat very quickly over 110 Celsius and then system hangs,
a power-cycle off is needed to reset soc.
I use 'stress -c 4' to do pressure test, with a medium size passive heatsink on top of h6.
The pressure test proves that the soc has about 4 watt power consuming
that is much lesser than original 6~7.x watt when running at 1.8GHz(orangepi lite2 with
usb Ethernet rtl8153 and usb hub, wifi is connected but not used).
Soc runs much more stable and does not get overheat easily under heavy load
with new opp table.
* [sunxi-dev][h6] orangepi lite2 wifi fix
bcm43455-fmac is buggy, reset to bcm4329-fmac
The packages 'recommend' python3-apt, while it simply does not work
without this package:
Traceback (most recent call last):
File "/usr/lib/armbian/armbian-apt-updates", line 25, in <module>
import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'
