diff --git a/wch-ch56x-bsp b/wch-ch56x-bsp
index db59be5..b4158ff 160000
--- a/wch-ch56x-bsp
+++ b/wch-ch56x-bsp
@@ -1 +1 @@
-Subproject commit db59be521708fe4a0dd280effc457dedce77c732
+Subproject commit b4158ff73e4a91fca53926be10b13eb733a39549