diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.c b/drivers/gpu/drm/i915/display/intel_combo_phy.c
index dd45cbafcf42..c55813c6194a 100644
--- a/drivers/gpu/drm/i915/display/intel_combo_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c
@@ -187,10 +187,16 @@ static bool has_phy_misc(struct drm_i915_private *i915, enum phy phy)
 	 * Some platforms only expect PHY_MISC to be programmed for PHY-A and
 	 * PHY-B and may not even have instances of the register for the
 	 * other combo PHY's.
+	 *
+	 * ADL-S technically has three instances of PHY_MISC, but only requires
+	 * that we program it for PHY A.
 	 */
-	if (IS_JSL_EHL(i915) ||
-	    IS_ROCKETLAKE(i915) ||
-	    IS_DG1(i915))
+
+	if (IS_ALDERLAKE_S(i915))
+		return phy == PHY_A;
+	else if (IS_JSL_EHL(i915) ||
+		 IS_ROCKETLAKE(i915) ||
+		 IS_DG1(i915))
 		return phy < PHY_C;
 
 	return true;