diff --git a/src/mainboard/google/brox/smihandler.c b/src/mainboard/google/brox/smihandler.c
index 21b441f8d9..d583d4f00c 100644
--- a/src/mainboard/google/brox/smihandler.c
+++ b/src/mainboard/google/brox/smihandler.c
@@ -1,11 +1,13 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 
+#include <acpi/acpi.h>
 #include <cpu/x86/smm.h>
 #include <ec/google/chromeec/ec.h>
 #include <ec/google/chromeec/smm.h>
 #include <elog.h>
 #include <baseboard/variants.h>
 #include <intelblocks/smihandler.h>
+#include <intelblocks/xhci.h>
 #include <variant/ec.h>
 
 void __weak variant_smi_sleep(u8 slp_typ) {}
@@ -14,6 +16,12 @@ void mainboard_smi_sleep(u8 slp_typ)
 {
 	variant_smi_sleep(slp_typ);
 	chromeec_smi_sleep(slp_typ, MAINBOARD_EC_S3_WAKE_EVENTS, MAINBOARD_EC_S5_WAKE_EVENTS);
+	/*
+	 * Workaround: Reset the XHCI controller prior to S5 to avoid
+	 * PMC timeout error during poweron from S5.
+	 */
+	if (slp_typ == ACPI_S5)
+		xhci_host_reset();
 }
 
 int mainboard_smi_apmc(u8 apmc)