dedicated GPU PCIe on RockPro64
#1
Hello,

I am new here and my English not is so good.

I plan to buy one RockPro64 2gb, maybe 4gb to use with Linux.

I am wondering to know if the PCIe slot in this board can work with a dedicated graphics card like this
https://www.amazon.co.uk/Club-3D-Radeon-...B00JGON2EM

The drivers for linux x86/amd64 can be ported for this this kind of use or it will be a very big challenge?
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#2
(10-07-2018, 11:28 AM)ice2642 Wrote: Hello,

I am new here and my English not is so good.

I plan to buy one RockPro64 2gb, maybe 4gb to use with Linux.

I am wondering to know if the PCIe slot in this board can work with a dedicated graphics card like this
https://www.amazon.co.uk/Club-3D-Radeon-...B00JGON2EM

The drivers for linux x86/amd64 can be ported for this this kind of use or it will be a very big challenge?

The main problem is booting the kernel with a non PCIe->SATA controller, most cards make the kernel to panic.

Another issue would be to know whether the drivers can initialize the card without the help of the VideoBIOS (https://en.wikipedia.org/wiki/Video_BIOS), which likely can. I connected many years ago a Geforce 8400GS PCI to an old Pentium II from Dell, and despite it did not show the boot process, I could start Xorg with "nouveau" driver. So I expect that "nouveau" and "radeon" can initialize the cards.

I wonder if Rockchip guys are interested in getting the rk3399's PCI express to work properly :S
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#3
Another problem seems to be how much power can be provided through the PCIe slot, it sounds like most of the beefy cards need to pull 75 watts from the PCIe slot, even if it has gpu power connectors on the card.
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#4
(10-10-2018, 12:53 PM)MobileJAD Wrote: Another problem seems to be how much power can be provided through the PCIe slot, it sounds like most of the beefy cards need to pull 75 watts from the PCIe slot, even if it has gpu power connectors on the card.

from this post;
[quote]
ROCKPRo64 Engineering Change Notice ECN:20180628RP01 This ECN applies strictly to ROCKPro64 Board ver. 2.0, dated 2018-04-11. It is applicable to boards with both 2GB and 4GB memory. Issue: The PCIe 3.3V power is not supplied; in result PCIe is not functional. Solution: Remove R89538 resistor that affects U7109 TCS4484B power regulator, supplying 3.3V to the PCIe Bus. The ROCKPro64 ver. 2.0 schematic can be downloaded from the PINE64 wiki: http://files.pine64.org/doc/rockpro64/ro...20-SCH.pdf The ROCKPro64 ver. 2.0 board component layout reference is also available at the PINE64 wiki: http://files.pine64.org/doc/rockpro64/Rockpro64- ver2.0-topsilk_ref.pdf[quote]


I presume it might have 3.3v, we need to know now how many amps if power has 5A is not enough for a low end GPU, but if it can use more, maybe it will. Acube-systems has a board to run AmigaOS with CPU PPC, it can run PCIe with ATI cards. Maybe the GPU BIOS boot thenhave to be software rather than physical.

this text was translated by Google, sorry for any lack of meaning.
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