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From de35f524e89daf8862d49724b9045f9254bfdfea Mon Sep 17 00:00:00 2001
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From: Fedora Kernel Team <kernel-team@fedoraproject.org>
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Date: Mon, 20 Jun 2016 14:52:01 +0200
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Subject: [PATCH 3/6] drm/nouveau/disp/sor/gf119: both links use the same
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training register
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Upstream: drm-fixes for 4.7 (and cc'd 4.6-stable)
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commit a8953c52b95167b5d21a66f0859751570271d834
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Author: Ben Skeggs <bskeggs@redhat.com>
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AuthorDate: Fri Jun 3 14:37:40 2016 +1000
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Commit: Ben Skeggs <bskeggs@redhat.com>
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CommitDate: Tue Jun 7 08:11:14 2016 +1000
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drm/nouveau/disp/sor/gf119: both links use the same training register
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It appears that, for whatever reason, both link A and B use the same
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register to control the training pattern. It's a little odd, as the
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GPUs before this (Tesla/Fermi1) have per-link registers, as do newer
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GPUs (Maxwell).
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Fixes the third DP output on NVS 510 (GK107).
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Cc: stable@vger.kernel.org
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---
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drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c
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index b4b41b1..5111560 100644
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--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c
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+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c
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@@ -40,8 +40,7 @@ static int
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gf119_sor_dp_pattern(struct nvkm_output_dp *outp, int pattern)
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{
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struct nvkm_device *device = outp->base.disp->engine.subdev.device;
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- const u32 loff = gf119_sor_loff(outp);
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- nvkm_mask(device, 0x61c110 + loff, 0x0f0f0f0f, 0x01010101 * pattern);
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+ nvkm_mask(device, 0x61c110, 0x0f0f0f0f, 0x01010101 * pattern);
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return 0;
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}
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--
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2.7.4
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