diff --git a/wch-ch56x-bsp b/wch-ch56x-bsp
index 2bdac54..4b08bbd 160000
--- a/wch-ch56x-bsp
+++ b/wch-ch56x-bsp
@@ -1 +1 @@
-Subproject commit 2bdac543ba3eef47da76274e07300094e37d90fa
+Subproject commit 4b08bbdedcf772ec68cc5e61c37741d5975dadb9