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authorBen Skeggs <bskeggs@redhat.com>2016-06-03 14:37:40 +1000
committerBen Skeggs <bskeggs@redhat.com>2016-06-07 08:11:14 +1000
commita8953c52b95167b5d21a66f0859751570271d834 (patch)
tree210fe44ee38c2cfcd0741f444e94288dffdb6709 /drivers/gpu
parent77154fd969df749f5bf83f639af19fca199de033 (diff)
downloadlinux-a8953c52b95167b5d21a66f0859751570271d834.tar.bz2
drm/nouveau/disp/sor/gf119: both links use the same training register
It appears that, for whatever reason, both link A and B use the same register to control the training pattern. It's a little odd, as the GPUs before this (Tesla/Fermi1) have per-link registers, as do newer GPUs (Maxwell). Fixes the third DP output on NVS 510 (GK107). Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c
index b4b41b135643..5111560b4809 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c
@@ -40,8 +40,7 @@ static int
gf119_sor_dp_pattern(struct nvkm_output_dp *outp, int pattern)
{
struct nvkm_device *device = outp->base.disp->engine.subdev.device;
- const u32 loff = gf119_sor_loff(outp);
- nvkm_mask(device, 0x61c110 + loff, 0x0f0f0f0f, 0x01010101 * pattern);
+ nvkm_mask(device, 0x61c110, 0x0f0f0f0f, 0x01010101 * pattern);
return 0;
}