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Author: loboris

Linux Distributions for Orange PI H3 boards

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Published in 2015-7-30 02:16:57 | Show all floors
Edited by bronco at 2015-7-30 02:22
goldenfenix replied at 2015-7-29 16:35
Good day.
I have a problem when i trying to compile kernel with script  build_linux_kernel.sh from  ...

Have you tried to set up a working standalone cross-compiler toolchain (eg. from Linaro) to avoid problems?

Get http://releases.linaro.org/14.11 ... ux-gnueabihf.tar.xz and unpack it below /usr/local.

Then prior to starting the script do a
  1. export PATH="/usr/local/gcc-linaro-4.9-2014.11-x86_64_arm-linux-gnueabihf/bin/:$PATH"
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and then as usual. Report back please.
Published in 2015-7-30 02:21:29 | Show all floors
GreyWolf replied at 2015-7-28 22:51
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
1536000

And what about /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq ?

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Published in 2015-7-30 12:30:59 | Show all floors
Edited by goldenfenix at 2015-7-30 12:32
bronco replied at 2015-7-30 02:16
Have you tried to set up a working standalone cross-compiler toolchain (eg. from Linaro) to avoid p ...

Done how in the instruction, but the  same error.

unrecognized command line option ‘--min_array_alignment=4’
unrecognized command line option ‘--no_unaligned_access’


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Published in 2015-7-30 14:00:52 | Show all floors
@goldenfenix
You need to patch source before you compile!
http://www.cyberciti.biz/faq/appy-patch-file-using-patch-command/
http://jungels.net/articles/diff-patch-ten-minutes.html

Without patch you can only compile this kernel source with included SDK binary toolchain (4.6) or for example (maybe simpler) with ubuntu 12.04and installing toolchain (4.6.4) with apt-get install.
Boards:
orangepi plus, olinuxino A20, cubieboard A10, mele A2000 .....

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Published in 2015-7-30 14:03:18 | Show all floors
fritz replied at 2015-7-30 14:00
@goldenfenix
You need to patch source before you compile!
http://www.cyberciti.biz/faq/appy-patch-fi ...

Thanks it was good help.

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Published in 2015-7-30 21:36:18 | Show all floors
bronco replied at 2015-7-29 21:21
And what about /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq ?

CPU0:
scaling_max_freq 1536000
scaling_cur_freq 480000
CPU1:
scaling_max_freq 1536000
scaling_cur_freq 480000
CPU2:
scaling_max_freq 1536000
scaling_cur_freq 480000
CPU3:
scaling_max_freq 1536000
scaling_cur_freq 480000

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 Author| Published in 2015-7-30 22:50:23 | Show all floors
GreyWolf replied at 2015-7-30 14:36
CPU0:
scaling_max_freq 1536000
scaling_cur_freq 480000

scaling_cur_freq changes constantly...
try to run some cpu intensive program and at the same check scaling_cur_freq, it will go to scaling_max_freq.
Or install CPU frequency applet...
480000 (480MHz) is the minimal CPU freq.

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Published in 2015-7-30 23:34:16 | Show all floors
loboris replied at 2015-7-30 17:50
scaling_cur_freq changes constantly...
try to run some cpu intensive program and at the same check ...

Why do this ?
For different tasks will be different loading cores.
Published in 2015-7-31 00:41:16 | Show all floors
GreyWolf replied at 2015-7-30 21:36
CPU0:
scaling_max_freq 1536000
scaling_cur_freq 480000

So you reported thermal values when your system was totally idle. BTW: I don't know how it's on H3 but on others sunxi SoCs you only have to query the values of CPU0 since cpufreq settings always apply to all cores.

Would be interesting to "apt-get install stress" and then put significant load on the system: "stress -t 900 -c 4 -m 2 -i 2" (if it survives the 15 min. then your heatsink helps)

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 Author| Published in 2015-7-31 00:47:59 | Show all floors
Edited by loboris at 2015-7-30 17:50
bronco replied at 2015-7-30 17:41
So you reported thermal values when your system was totally idle. BTW: I don't know how it's on H3 ...

with heatsink and fan it can survive stress indefinitely...

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