RockPro64

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15 Jan 2019 16:33 - 15 Jan 2019 18:15 #124241 by vre
RockPro64 was created by vre
Can rockpro64 4G run linuxcnc 2.8?
Has good jitter?
Have anyone tested it?

Ok i will get it and i will post my experience.
Last edit: 15 Jan 2019 18:15 by vre.
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17 Jan 2019 15:58 #124357 by pl7i92
Replied by pl7i92 on topic RockPro64
as many featurers as the board got i think you will be in troubel with the smi

but you need to test it yourself depending on what linuxcnc version and os you well be on it is different
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22 Jan 2019 06:39 #124598 by vre
Replied by vre on topic RockPro64
i have ordered it.
I hope it has good jitter.
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02 Feb 2019 02:08 #125516 by blazini36
Replied by blazini36 on topic RockPro64
I just ordered the rock960 from 96boards. It has the same rk3399, I'll be curious how the rock64pro works for ya.
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02 Feb 2019 04:03 #125521 by vre
Replied by vre on topic RockPro64
Iam still waiting to receive it.
When i receive it will post details about speed/jitter.
rock960 has same chipset but i think missing pci-E port.
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02 Feb 2019 14:38 #125538 by blazini36
Replied by blazini36 on topic RockPro64
It has an m.2 slot instead
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09 Feb 2019 10:27 #126040 by vre
Replied by vre on topic RockPro64
I have in my hands rockpro64 iam writing from this now.
Board is fast i have compiled linuxcnc but only sim because
i can not find preempt-rt patch for the kernel version armbian has.
$ uname -a
Linux rockpro64 4.4.172-rockchip64 #10 SMP Tue Jan 29 07:36:43 CET 2019 aarch64 GNU/Linux
Is there any preempt-rt patch for kernel 4.4172 ?
Attachments:
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09 Feb 2019 17:02 #126063 by blazini36
Replied by blazini36 on topic RockPro64
I see the same thing with my rock960 on Debian, 4.4.154.

If you can find the kernel config you should be able to compile a kernel that does have a patch and configure it with the same options. Unfortunately on my board the config files don't seem to exist in any place I've checked for them so I'm waiting to hear back from the discussion group.
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09 Feb 2019 18:52 - 09 Feb 2019 18:56 #126066 by vre
Replied by vre on topic RockPro64
i have installed armbian the problem is this
# ls ../preempt-rt/patch-4.4*
../preempt-rt/patch-4.4.162-rt176-rc1.patch.gz  ../preempt-rt/patch-4.4.169-rt177.patch.gz
root@rockpro64:/usr/src/linux-source-4.4.172-rockchip64# make kernelversion
4.4.172
root@rockpro64:/usr/src/linux-source-4.4.172-rockchip64#

There is version mismatch between armbian kernel source code version and preemt-rt patch version
so patch fails...

I will try to search at rockchip kernel repository if there is a previous version 4.4.169
or if preempt-rt project release 4.4.172 patch

Except this serious problem the board is fast linuxcnc runs fast at simulation mode.
Last edit: 09 Feb 2019 18:56 by vre.
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