diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/engine/disp/dport.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/disp/dport.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/dport.c b/drivers/gpu/drm/nouveau/core/engine/disp/dport.c index 1bd4c63369c1..3ca2d25b7f5e 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/dport.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/dport.c @@ -273,7 +273,7 @@ nouveau_dp_train(struct nouveau_disp *disp, const struct nouveau_dp_func *func, .outp = outp, .head = head, }, *dp = &_dp; - const u32 bw_list[] = { 270000, 162000, 0 }; + const u32 bw_list[] = { 540000, 270000, 162000, 0 }; const u32 *link_bw = bw_list; u8 hdr, cnt, len; u32 data; @@ -312,6 +312,14 @@ nouveau_dp_train(struct nouveau_disp *disp, const struct nouveau_dp_func *func, ERR("failed to read DPCD\n"); } + /* bring capabilities within encoder limits */ + if ((dp->dpcd[2] & 0x1f) > dp->outp->dpconf.link_nr) { + dp->dpcd[2] &= ~0x1f; + dp->dpcd[2] |= dp->outp->dpconf.link_nr; + } + if (dp->dpcd[1] > dp->outp->dpconf.link_bw) + dp->dpcd[1] = dp->outp->dpconf.link_bw; + /* adjust required bandwidth for 8B/10B coding overhead */ datarate = (datarate / 8) * 10; |