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| author | Ben Skeggs <bskeggs@redhat.com> | 2012-03-12 02:16:55 +0100 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2012-03-13 08:15:05 +0100 |
| commit | 6860dc8251eacd1672fa660b85bb59a45350aa70 (patch) | |
| tree | ca9b5de022f9b9db305d8f1fbdcf239749715e55 /drivers/gpu/drm/nouveau/nouveau_dp.c | |
| parent | drm/nvd0/disp: fix dcb sor link matching in supervisor handler (diff) | |
| download | linux-6860dc8251eacd1672fa660b85bb59a45350aa70.tar.xz linux-6860dc8251eacd1672fa660b85bb59a45350aa70.zip | |
drm/nouveau/dp: account for channel coding overhead in link training
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_dp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c index b3644651d89b..302b2f7d0678 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dp.c +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c @@ -422,6 +422,9 @@ nouveau_dp_link_train(struct drm_encoder *encoder, u32 datarate, dp.auxch = auxch->drive; dp.dpcd = nv_encoder->dp.dpcd; + /* adjust required bandwidth for 8B/10B coding overhead */ + datarate = (datarate / 8) * 10; + /* some sinks toggle hotplug in response to some of the actions * we take during link training (DP_SET_POWER is one), we need * to ignore them for the moment to avoid races. |