Describe vrefint calibration cell to be retrieved through bsec,
on STM32MP13x SoCs family.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
---
 arch/arm/boot/dts/st/stm32mp131.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp131.dtsi b/arch/arm/boot/dts/st/stm32mp131.dtsi
index 8512a6e46b33..3cc5623d52ca 100644
--- a/arch/arm/boot/dts/st/stm32mp131.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp131.dtsi
@@ -1018,6 +1018,9 @@ part_number_otp: part_number_otp@4 {
 				reg = <0x4 0x2>;
 				bits = <0 12>;
 			};
+			vrefint: vrefin-cal@52 {
+				reg = <0x52 0x2>;
+			};
 			ts_cal1: calib@5c {
 				reg = <0x5c 0x2>;
 			};
-- 
2.25.1