diff --git a/drivers/gpu/drm/i915/display/intel_lt_phy.c b/drivers/gpu/drm/i915/display/intel_lt_phy.c
index 04f63bdd0b87..27ad8407606b 100644
--- a/drivers/gpu/drm/i915/display/intel_lt_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_lt_phy.c
@@ -2158,6 +2158,9 @@ bool
 intel_lt_phy_pll_compare_hw_state(const struct intel_lt_phy_pll_state *a,
 				  const struct intel_lt_phy_pll_state *b)
 {
+	if (a->tbt_mode || b->tbt_mode)
+		return true;
+
 	/*
 	 * With LT PHY values other than VDR0_CONFIG and VDR2_CONFIG are
 	 * unreliable. They cannot always be read back since internally