diff --git a/arch/arm/mach-stm32mp/syscon.c b/arch/arm/mach-stm32mp/syscon.c
index b00897e87ec..f2cfc9465a5 100644
--- a/arch/arm/mach-stm32mp/syscon.c
+++ b/arch/arm/mach-stm32mp/syscon.c
@@ -10,6 +10,7 @@
 
 static const struct udevice_id stm32mp_syscon_ids[] = {
 	{ .compatible = "st,stm32mp157-syscfg", .data = STM32MP_SYSCON_SYSCFG },
+	{ .compatible = "st,stm32mp21-syscfg", .data = STM32MP_SYSCON_SYSCFG},
 	{ .compatible = "st,stm32mp23-syscfg", .data = STM32MP_SYSCON_SYSCFG},
 	{ .compatible = "st,stm32mp25-syscfg", .data = STM32MP_SYSCON_SYSCFG},
 	{ }