From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
The glk display version change is causing us to again attempt
LTTPR detection on glk. We must not do tha since glk doesn't
have a long enough AUX timeout. Restore the correct logic to
skip the detection.
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Fixes: 2b5a4562edd0 ("drm/i915/display: Simplify GLK display version tests")
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dp_link_training.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 5e9c3c74310c..597634e4f35f 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -96,7 +96,7 @@ static bool intel_dp_read_lttpr_common_caps(struct intel_dp *intel_dp)
* Detecting LTTPRs must be avoided on platforms with an AUX timeout
* period < 3.2ms. (see DP Standard v2.0, 2.11.2, 3.6.6.1).
*/
- if (DISPLAY_VER(i915) < 10)
+ if (DISPLAY_VER(i915) < 10 || IS_GEMINILAKE(i915))
return false;
if (drm_dp_read_lttpr_common_caps(&intel_dp->aux,
--
2.26.3
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