diff --git a/src/mainboard/google/brya/variants/baseboard/include/baseboard/ec.h b/src/mainboard/google/brya/variants/baseboard/include/baseboard/ec.h
index fba653bd75..a4b8829af4 100644
--- a/src/mainboard/google/brya/variants/baseboard/include/baseboard/ec.h
+++ b/src/mainboard/google/brya/variants/baseboard/include/baseboard/ec.h
@@ -64,4 +64,6 @@
 #define SIO_EC_HOST_ENABLE       /* EC Host Interface Resources */
 #define SIO_EC_ENABLE_PS2K       /* Enable PS/2 Keyboard */
 
+#define EC_ENABLE_SYNC_IRQ      /* Enable tight timestamp / wake support */
+
 #endif /* __BASEBOARD_EC_H__ */
diff --git a/src/mainboard/google/brya/variants/baseboard/include/baseboard/gpio.h b/src/mainboard/google/brya/variants/baseboard/include/baseboard/gpio.h
index 578fac9de9..0de7ffd36c 100644
--- a/src/mainboard/google/brya/variants/baseboard/include/baseboard/gpio.h
+++ b/src/mainboard/google/brya/variants/baseboard/include/baseboard/gpio.h
@@ -16,5 +16,7 @@
 #define GPIO_EC_IN_RW		GPP_F18
 /* Used to gate SoC's SLP_S0# signal */
 #define GPIO_SLP_S0_GATE	GPP_F9
+/* GPIO IRQ for tight timestamps / wake support */
+#define EC_SYNC_IRQ		GPP_F17_IRQ
 
 #endif /* __BASEBOARD_GPIO_H__ */