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 :) >> 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? >> 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. Regards, Christian.
