diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index e83bca84753bb41b5eb90ec768abb90f2eb704f9..bd986ab2f384078ee6356a2e41360d5db241c8db 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -666,7 +666,7 @@ static const struct gce_plat gce_plat_v5 = {
 static const struct gce_plat gce_plat_v6 = {
 	.thread_nr = 24,
 	.shift = 3,
-	.control_by_sw = false,
+	.control_by_sw = true,
 	.gce_num = 2
 };