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-rw-r--r--src/mainboard/ocp/deltalake/devicetree.cb4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mainboard/ocp/deltalake/devicetree.cb b/src/mainboard/ocp/deltalake/devicetree.cb
index 24a2850fc9..1773f9f7b8 100644
--- a/src/mainboard/ocp/deltalake/devicetree.cb
+++ b/src/mainboard/ocp/deltalake/devicetree.cb
@@ -33,6 +33,10 @@ chip soc/intel/xeon_sp/cpx
# configure PSTATE_REQ_RATIO for MSR_IA32_PERF_CTRL
register "pstate_req_ratio" = "0xa"
+ # configure VT-d
+ register "vtd_support" = "1"
+ register "x2apic" = "1"
+
register "gen1_dec" = "0x00fc0601" # BIC in-band update support
register "gen2_dec" = "0x000c0ca1" # IPMI KCS