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From de35f524e89daf8862d49724b9045f9254bfdfea Mon Sep 17 00:00:00 2001
From: Fedora Kernel Team <kernel-team@fedoraproject.org>
Date: Mon, 20 Jun 2016 14:52:01 +0200
Subject: [PATCH 3/6] drm/nouveau/disp/sor/gf119: both links use the same
training register
Upstream: drm-fixes for 4.7 (and cc'd 4.6-stable)
commit a8953c52b95167b5d21a66f0859751570271d834
Author: Ben Skeggs <bskeggs@redhat.com>
AuthorDate: Fri Jun 3 14:37:40 2016 +1000
Commit: Ben Skeggs <bskeggs@redhat.com>
CommitDate: Tue Jun 7 08:11:14 2016 +1000
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
---
drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c | 3 +--
1 file changed, 1 insertion(+), 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 b4b41b1..5111560 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;
}
--
2.7.4
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