diff --git a/soc/silabs/common/soc.c b/soc/silabs/common/soc.c
index 1136a1fedfd..5d3e9db5693 100644
--- a/soc/silabs/common/soc.c
+++ b/soc/silabs/common/soc.c
@@ -206,7 +206,7 @@ static void swo_init(void)
  *
  * @return 0
  */
-static int silabs_init(void)
+void soc_early_init_hook(void)
 {
 	/* handle chip errata */
 	CHIP_Init();
@@ -240,8 +240,4 @@ static int silabs_init(void)
 	swo_init();
 #endif
 #endif /* !CONFIG_SOC_GECKO_DEV_INIT */
-
-	return 0;
 }
-
-SYS_INIT(silabs_init, PRE_KERNEL_1, 0);
diff --git a/soc/silabs/silabs_s0/Kconfig b/soc/silabs/silabs_s0/Kconfig
index 6baa33bc1ac..90a0814185f 100644
--- a/soc/silabs/silabs_s0/Kconfig
+++ b/soc/silabs/silabs_s0/Kconfig
@@ -7,6 +7,7 @@ if SOC_FAMILY_SILABS_S0
 config SOC_FAMILY_SILABS_S0
 	select HAS_SEGGER_RTT if ZEPHYR_SEGGER_MODULE
 	select BUILD_OUTPUT_HEX
+	select SOC_EARLY_INIT_HOOK
 
 rsource "*/Kconfig"
 
diff --git a/soc/silabs/silabs_s1/Kconfig b/soc/silabs/silabs_s1/Kconfig
index 5849bd9ecaf..655fec0ea33 100644
--- a/soc/silabs/silabs_s1/Kconfig
+++ b/soc/silabs/silabs_s1/Kconfig
@@ -7,6 +7,7 @@ if SOC_FAMILY_SILABS_S1
 config SOC_FAMILY_SILABS_S1
 	select HAS_SEGGER_RTT if ZEPHYR_SEGGER_MODULE
 	select BUILD_OUTPUT_HEX
+	select SOC_EARLY_INIT_HOOK
 
 rsource "*/Kconfig"
 
diff --git a/soc/silabs/silabs_s2/Kconfig b/soc/silabs/silabs_s2/Kconfig
index 8d1dab247c9..567a72e7ea2 100644
--- a/soc/silabs/silabs_s2/Kconfig
+++ b/soc/silabs/silabs_s2/Kconfig
@@ -7,6 +7,7 @@ if SOC_FAMILY_SILABS_S2
 config SOC_FAMILY_SILABS_S2
 	select HAS_SEGGER_RTT if ZEPHYR_SEGGER_MODULE
 	select BUILD_OUTPUT_HEX
+	select SOC_EARLY_INIT_HOOK
 
 rsource "*/Kconfig"
 
diff --git a/soc/silabs/silabs_sim3/sim3u/Kconfig b/soc/silabs/silabs_sim3/sim3u/Kconfig
index 39ef1525460..0233c9b94ec 100644
--- a/soc/silabs/silabs_sim3/sim3u/Kconfig
+++ b/soc/silabs/silabs_sim3/sim3u/Kconfig
@@ -8,3 +8,4 @@ config SOC_SERIES_SIM3U
 	select CPU_CORTEX_M3
 	select CPU_CORTEX_M_HAS_SYSTICK
 	select HAS_SILABS_SI32
+	select SOC_EARLY_INIT_HOOK
diff --git a/soc/silabs/silabs_sim3/sim3u/soc.c b/soc/silabs/silabs_sim3/sim3u/soc.c
index 88355105b1e..9544d2edff9 100644
--- a/soc/silabs/silabs_sim3/sim3u/soc.c
+++ b/soc/silabs/silabs_sim3/sim3u/soc.c
@@ -108,7 +108,7 @@ __no_optimization static void busy_delay(uint32_t cycles)
 	}
 }
 
-static int silabs_sim3u_init(void)
+void soc_early_init_hook(void)
 {
 	uint32_t key;
 
@@ -130,8 +130,4 @@ static int silabs_sim3u_init(void)
 	vmon_init();
 
 	irq_unlock(key);
-
-	return 0;
 }
-
-SYS_INIT(silabs_sim3u_init, PRE_KERNEL_1, 0);