diff --git a/src/mainboard/google/brya/Kconfig.name b/src/mainboard/google/brya/Kconfig.name
index 8d6362dd2c..ecca6cc7a7 100644
--- a/src/mainboard/google/brya/Kconfig.name
+++ b/src/mainboard/google/brya/Kconfig.name
@@ -285,6 +285,7 @@ config BOARD_GOOGLE_YAVIKS
 config BOARD_GOOGLE_LISBON
 	bool "->  Lisbon"
 	select BOARD_GOOGLE_BASEBOARD_BRASK
+	select CHROMEOS_WIFI_SAR if CHROMEOS
 	select DRIVERS_GENESYSLOGIC_GL9750
 	select DRIVERS_GENESYSLOGIC_GL9763E
 
diff --git a/src/mainboard/google/brya/variants/lisbon/Makefile.inc b/src/mainboard/google/brya/variants/lisbon/Makefile.inc
index d38141ca24..f41cdfdb8a 100644
--- a/src/mainboard/google/brya/variants/lisbon/Makefile.inc
+++ b/src/mainboard/google/brya/variants/lisbon/Makefile.inc
@@ -4,3 +4,5 @@ bootblock-y += gpio.c
 romstage-y += gpio.c
 
 ramstage-y += gpio.c
+
+ramstage-y += variant.c
diff --git a/src/mainboard/google/brya/variants/lisbon/variant.c b/src/mainboard/google/brya/variants/lisbon/variant.c
new file mode 100644
index 0000000000..76f0f524a8
--- /dev/null
+++ b/src/mainboard/google/brya/variants/lisbon/variant.c
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <sar.h>
+
+const char *get_wifi_sar_cbfs_filename(void)
+{
+	return "wifi_sar_0.hex";
+}