Hi Xinliang, please provide the output of lspci and the content of /proc/iomem Thanks, Christian. Am 07.12.2017 um 10:35 schrieb Xinliang Liu: > Hi, > > We are trying ATI HD 7470 card on arm64 platform D05 with kernel 4.1.40. > But it failed with kernel log: > radeon 0005:01:00: ring 0 stalled for more than 10000msec > radeon 0005:01:00: GPU lockup (current fence id 0x0000000000000001 > last fence id 0x0000000000000002 on ring0) > radeon 0005:01:00: ring 0 stalled for more than 10500msec > radeon 0005:01:00: GPU lockup (current fence id 0x0000000000000001 > last fence id 0x0000000000000002 on ring0) > radeon 0005:01:00: ring 0 stalled for more than 11000msec > radeon 0005:01:00: GPU lockup (current fence id 0x0000000000000001 > last fence id 0x0000000000000002 on ring0) > radeon 0005:01:00: ring 0 stalled for more than 11500msec > radeon 0005:01:00: GPU lockup (current fence id 0x0000000000000001 > last fence id 0x0000000000000002 on ring0) > ... > > Any clue? > Any required setting on BIOS IO mem bar video ram? It seems that our > PCIE controller doesn't support cacheable feature for IO mem bar video > ram. > > > Best, > Xinliang
