diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index dc3b31200353..8e312f5b9f6d 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -1802,9 +1802,12 @@ static void tgl_bw_buddy_init(struct intel_display *display)
 	if (table[config].page_mask == 0) {
 		drm_dbg_kms(display->drm,
 			    "Unknown memory configuration; disabling address buddy logic.\n");
-		for_each_set_bit(i, &abox_mask, BITS_PER_TYPE(abox_mask))
-			intel_de_write(display, BW_BUDDY_CTL(i),
-				       BW_BUDDY_DISABLE);
+
+		if (DISPLAY_VER(display) < 20) {
+			for_each_set_bit(i, &abox_mask, BITS_PER_TYPE(abox_mask))
+				intel_de_write(display, BW_BUDDY_CTL(i),
+					       BW_BUDDY_DISABLE);
+		}
 	} else {
 		for_each_set_bit(i, &abox_mask, BITS_PER_TYPE(abox_mask)) {
 			intel_de_write(display, BW_BUDDY_PAGE_MASK(i),