diff --git a/plat/st/stm32mp1/stm32mp1_def.h b/plat/st/stm32mp1/stm32mp1_def.h
index 8ca6123..542895a 100644
--- a/plat/st/stm32mp1/stm32mp1_def.h
+++ b/plat/st/stm32mp1/stm32mp1_def.h
@@ -71,6 +71,7 @@
 
 #define STM32MP1_REV_B		U(0x2000)
 #if STM32MP13
+#define STM32MP1_REV_Y		U(0x1003)
 #define STM32MP1_REV_Z		U(0x1001)
 #endif
 #if STM32MP15
diff --git a/plat/st/stm32mp1/stm32mp1_private.c b/plat/st/stm32mp1/stm32mp1_private.c
index 86b9f23..c40e045 100644
--- a/plat/st/stm32mp1/stm32mp1_private.c
+++ b/plat/st/stm32mp1/stm32mp1_private.c
@@ -493,6 +493,11 @@
 	case STM32MP1_REV_B:
 		cpu_r = "B";
 		break;
+#if STM32MP13
+	case STM32MP1_REV_Y:
+		cpu_r = "Y";
+		break;
+#endif
 	case STM32MP1_REV_Z:
 		cpu_r = "Z";
 		break;