diff --git a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/host/op-pdbg-host-control/vcs_workaround.sh b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/host/op-pdbg-host-control/vcs_workaround.sh
index ec3cbcf..49d6bfb 100644
--- a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/host/op-pdbg-host-control/vcs_workaround.sh
+++ b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/host/op-pdbg-host-control/vcs_workaround.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-gpioutil -p D0 -d out -v 1   # enable fsi link
+putcfam pu 0900 31 1 1 -ib   # put the CFAM/FSI slave into async mode
 putcfam pu 2810 15 1 0       # Unfence PLL controls
 putcfam pu 281A  1 1 f       # Assert Perv chiplet endpoint reset, just in case
 putcfam pu 281A 31 1 f       # Enable Nest PLL