diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 860b46b72403f1a3bbe132915b980588d2ce1e86..aa98b62910b40cc940fbe888d8e9482c29eee9bd 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -579,7 +579,8 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
 			   EDP_PSR_DEBUG_MASK_MEMUP |
 			   EDP_PSR_DEBUG_MASK_HPD |
 			   EDP_PSR_DEBUG_MASK_LPSP |
-			   EDP_PSR_DEBUG_MASK_DISP_REG_WRITE);
+			   EDP_PSR_DEBUG_MASK_DISP_REG_WRITE |
+			   EDP_PSR_DEBUG_MASK_MAX_SLEEP);
 	}
 }