diff --git a/drivers/st/bsec/bsec.c b/drivers/st/bsec/bsec.c
index b3c15ee..01c369e 100644
--- a/drivers/st/bsec/bsec.c
+++ b/drivers/st/bsec/bsec.c
@@ -841,22 +841,6 @@
 }
 
 /*
- * bsec_mode_is_closed_device: read OTP secure sub-mode.
- * return: false if open_device and true of closed_device.
- */
-bool bsec_mode_is_closed_device(void)
-{
-	uint32_t value;
-
-	if ((bsec_shadow_register(DATA0_OTP) != BSEC_OK) ||
-	    (bsec_read_otp(&value, DATA0_OTP) != BSEC_OK)) {
-		return true;
-	}
-
-	return (value & DATA0_OTP_SECURED) == DATA0_OTP_SECURED;
-}
-
-/*
  * bsec_shadow_read_otp: Load OTP from SAFMEM and provide its value
  * otp_value: read value.
  * word: OTP number.
@@ -894,7 +878,7 @@
 
 	if (otp >= STM32MP1_UPPER_OTP_START) {
 		/* Check if BSEC is in OTP-SECURED closed_device state. */
-		if (bsec_mode_is_closed_device()) {
+		if (stm32mp_is_closed_device()) {
 			if (!non_secure_can_access(otp)) {
 				return BSEC_ERROR;
 			}
diff --git a/include/drivers/st/bsec.h b/include/drivers/st/bsec.h
index 2171550..d833e7a 100644
--- a/include/drivers/st/bsec.h
+++ b/include/drivers/st/bsec.h
@@ -199,7 +199,6 @@
 bool bsec_wr_lock(uint32_t otp);
 uint32_t bsec_otp_lock(uint32_t service, uint32_t value);
 
-bool bsec_mode_is_closed_device(void);
 uint32_t bsec_shadow_read_otp(uint32_t *otp_value, uint32_t word);
 uint32_t bsec_check_nsec_access_rights(uint32_t otp);
 
diff --git a/plat/st/common/include/stm32mp_common.h b/plat/st/common/include/stm32mp_common.h
index e20308e..59657fd 100644
--- a/plat/st/common/include/stm32mp_common.h
+++ b/plat/st/common/include/stm32mp_common.h
@@ -19,6 +19,7 @@
 uintptr_t stm32mp_get_boot_ctx_address(void);
 
 bool stm32mp_is_single_core(void);
+bool stm32mp_is_closed_device(void);
 
 /* Return the base address of the DDR controller */
 uintptr_t stm32mp_ddrctrl_base(void);
diff --git a/plat/st/stm32mp1/stm32mp1_private.c b/plat/st/stm32mp1/stm32mp1_private.c
index 38ebcef..e2dcd2a 100644
--- a/plat/st/stm32mp1/stm32mp1_private.c
+++ b/plat/st/stm32mp1/stm32mp1_private.c
@@ -278,6 +278,19 @@
 	return ret;
 }
 
+/* Return true when device is in closed state */
+bool stm32mp_is_closed_device(void)
+{
+	uint32_t value;
+
+	if ((bsec_shadow_register(DATA0_OTP) != BSEC_OK) ||
+	    (bsec_read_otp(&value, DATA0_OTP) != BSEC_OK)) {
+		return true;
+	}
+
+	return (value & DATA0_OTP_SECURED) == DATA0_OTP_SECURED;
+}
+
 uint32_t stm32_iwdg_get_instance(uintptr_t base)
 {
 	switch (base) {