diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 30c627c..01cae86 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -555,7 +555,7 @@ intel_dp_aux_native_write(struct intel_dp *intel_dp,
 		if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
 			break;
 		else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER)
-			udelay(100);
+			udelay(500);
 		else
 			return -EIO;
 	}
@@ -2158,6 +2158,7 @@ intel_get_adjust_train(struct intel_dp *intel_dp,
 			v = this_v;
 		if (this_p > p)
 			p = this_p;
+		udelay(300);
 	}
 
 	voltage_max = intel_dp_voltage_max(intel_dp);