diff --git a/fdts/stm32mp15xx-osd32.dtsi b/fdts/stm32mp15xx-osd32.dtsi
index 76a2561..ca67235 100644
--- a/fdts/stm32mp15xx-osd32.dtsi
+++ b/fdts/stm32mp15xx-osd32.dtsi
@@ -81,10 +81,9 @@
 
 			vtt_ddr: ldo3 {
 				regulator-name = "vtt_ddr";
-				regulator-min-microvolt = <500000>;
-				regulator-max-microvolt = <750000>;
 				regulator-always-on;
 				regulator-over-current-protection;
+				st,regulator-sink-source;
 			};
 
 			vdd_usb: ldo4 {
@@ -110,7 +109,6 @@
 			vref_ddr: vref_ddr {
 				regulator-name = "vref_ddr";
 				regulator-always-on;
-				regulator-over-current-protection;
 			};
 
 			bst_out: boost {