diff --git a/src/mainboard/google/bluey/board.h b/src/mainboard/google/bluey/board.h
index 4a84e6333d..af2715b898 100644
--- a/src/mainboard/google/bluey/board.h
+++ b/src/mainboard/google/bluey/board.h
@@ -41,6 +41,7 @@
 #endif
 
 void setup_chromeos_gpios(void);
+bool is_off_mode(void);
 void enable_slow_battery_charging(void);
 void disable_slow_battery_charging(void);
 
diff --git a/src/mainboard/google/bluey/charging.c b/src/mainboard/google/bluey/charging.c
index 2c1e447585..56deedcdb9 100644
--- a/src/mainboard/google/bluey/charging.c
+++ b/src/mainboard/google/bluey/charging.c
@@ -1,7 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include "board.h"
+#include <soc/pmic.h>
 #include <soc/qcom_spmi.h>
+#include <types.h>
 
 #define SMB1_SLAVE_ID 0x07
 #define SMB2_SLAVE_ID 0x0A
@@ -41,3 +43,19 @@ void disable_slow_battery_charging(void)
 	spmi_write8(SMB1_CHGR_CHRG_EN_CMD, CHRG_DISABLE);
 	spmi_write8(SMB2_CHGR_CHRG_EN_CMD, CHRG_DISABLE);
 }
+
+/*
+ * is_off_mode - Check if the system is booting due to an off-mode power event.
+ *
+ * This function provides the board-level policy wrapper for detecting if the
+ * system power-on was triggered by an external charging event (e.g., cable
+ * insertion). This is typically used to enter LB_BOOT_MODE_OFFMODE_CHARGING.
+ *
+ * @return true if the system was triggered by a specific off-mode reason
+ * (e.g., charging cable insertion).
+ * @return false otherwise.
+ */
+bool is_off_mode(void)
+{
+	return is_pon_on_ac();
+}