Am 21.02.2018 um 10:23 schrieb Bas Vermeulen:
On Wed, Feb 21, 2018 at 10:14 AM, Christian König
<[email protected]
<mailto:[email protected]>> wrote:
Am 21.02.2018 um 10:06 schrieb Michel Dänzer:
On 2018-02-21 09:49 AM, Bas Vermeulen wrote:
Hi,
I am unsure if this is the right place to ask, but it
seems relevant.
Well this list is certainly the right place to ask :)
That's what I was hoping for :)
I am trying to use an AMD E8860 (SI) board connected to an
E6500 PowerPC
board (T2080RDB from NXP).
The T2080RDB does not use a BIOS, and uses u-boot to
bootstrap Linux.
I have the E8860 connected to a PCIe x4 slot with an
adapter. The kernel
is a 4.1, with DRM included in the kernel and the radeon
as a module.
The radeon driver detects the card, notices the BIOS
hasn't posted and
starts things up.
After that, the ring tests get run, and fails on the ring
0 test,
disabling acceleration. The graphics card is (or seems to
be) working
apart from that, the driver starts up and sees the
connectors on the board.
When I compare dmesg on an x86 machine and the PPC
machine, I see that
the x86 machine loads a lot more firmware from the kernel
(probably the
acceleration parts?).
FWIW, that's probably just a subsequent symptom due to the
ring test
failure.
Could be, but IIRC we load all the firmware first then initialize
things and then do the ring tests when we try to start the rings.
BTW: What driver are you using? radeon or amdgpu?
This is a south-island or sea-island chip, so using radeon.
Well SI is also supported by amdgpu, I would give that a try as well.
And BTW please try a more recent kernel as well, 4.1 is rather old.
My question is, what do I need to do to correctly
initialize the E8860
board on my powerpc machine?
Start by sharing the dmesg output, and maybe also the kernel build
configuration file.
Maybe also open a bug report to attach the dmesg, see
bugs.freedesktop.org <http://bugs.freedesktop.org>.
Sure. What project does the radeon driver fall under? I couldn't find
the right category under Mesa, not sure what
to file it under.
Product DRI and then select DRM/Radeon as component.
Christian.
Bas Vermeulen
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