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-rw-r--r--drivers/gpu/drm/nouveau/nv50_display.c15
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c2
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c2
3 files changed, 13 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 44e1952582aa..ee97eae3c973 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -1962,10 +1962,17 @@ nv50_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *umode,
switch (nv_encoder->dcb->type) {
case DCB_OUTPUT_TMDS:
if (nv_encoder->dcb->sorconf.link & 1) {
- if (mode->clock < 165000)
- proto = 0x1;
- else
- proto = 0x5;
+ proto = 0x1;
+ /* Only enable dual-link if:
+ * - Need to (i.e. rate > 165MHz)
+ * - DCB says we can
+ * - Not an HDMI monitor, since there's no dual-link
+ * on HDMI.
+ */
+ if (mode->clock >= 165000 &&
+ nv_encoder->dcb->duallink_possible &&
+ !drm_detect_hdmi_monitor(nv_connector->edid))
+ proto |= 0x4;
} else {
proto = 0x2;
}
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c
index 186fd3ac78f6..f0314664349c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c
@@ -158,7 +158,7 @@ exec_clkcmp(struct nv50_disp *disp, int head, int id, u32 pclk, u32 *conf)
switch (outp->info.type) {
case DCB_OUTPUT_TMDS:
*conf = (ctrl & 0x00000f00) >> 8;
- if (pclk >= 165000)
+ if (*conf == 5)
*conf |= 0x0100;
break;
case DCB_OUTPUT_LVDS:
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c
index 32e73a975b58..4226d2153b9c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c
@@ -391,7 +391,7 @@ exec_clkcmp(struct nv50_disp *disp, int head, int id, u32 pclk, u32 *conf)
switch (outp->info.type) {
case DCB_OUTPUT_TMDS:
*conf = (ctrl & 0x00000f00) >> 8;
- if (pclk >= 165000)
+ if (*conf == 5)
*conf |= 0x0100;
break;
case DCB_OUTPUT_LVDS: