diff --git a/soc/snps/arc_iot/Kconfig b/soc/snps/arc_iot/Kconfig
index 362d2d1ae71..0ea361d2325 100644
--- a/soc/snps/arc_iot/Kconfig
+++ b/soc/snps/arc_iot/Kconfig
@@ -6,3 +6,4 @@ config SOC_ARC_IOT
 	select ARC
 	select CPU_HAS_MPU
 	select CPU_HAS_FPU
+	select SOC_EARLY_INIT_HOOK
diff --git a/soc/snps/arc_iot/soc.c b/soc/snps/arc_iot/soc.c
index 832c6df5f51..d42ed3f9d9c 100644
--- a/soc/snps/arc_iot/soc.c
+++ b/soc/snps/arc_iot/soc.c
@@ -15,14 +15,7 @@
 
 #define CPU_FREQ DT_PROP(DT_PATH(cpus, cpu_0), clock_frequency)
 
-static int arc_iot_init(void)
+void soc_early_init_hook(void)
 {
-
-	if (arc_iot_pll_fout_config(CPU_FREQ / 1000000) < 0) {
-		return -1;
-	}
-
-	return 0;
+	arc_iot_pll_fout_config(CPU_FREQ / 1000000);
 }
-
-SYS_INIT(arc_iot_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
diff --git a/soc/snps/emsk/Kconfig b/soc/snps/emsk/Kconfig
index 88cdfe70671..014d5357f0a 100644
--- a/soc/snps/emsk/Kconfig
+++ b/soc/snps/emsk/Kconfig
@@ -4,12 +4,16 @@
 
 config SOC_EMSK
 	select ARC
+	select SOC_EARLY_INIT_HOOK
 
 config SOC_EMSK_EM7D
 	select CPU_HAS_MPU
+	select SOC_EARLY_INIT_HOOK
 
 config SOC_EMSK_EM9D
 	select CPU_HAS_FPU
+	select SOC_EARLY_INIT_HOOK
 
 config SOC_EMSK_EM11D
 	select CPU_HAS_FPU
+	select SOC_EARLY_INIT_HOOK
diff --git a/soc/snps/emsk/soc_config.c b/soc/snps/emsk/soc_config.c
index adca19b683c..c43942facb0 100644
--- a/soc/snps/emsk/soc_config.c
+++ b/soc/snps/emsk/soc_config.c
@@ -11,7 +11,7 @@
 
 #ifdef CONFIG_UART_NS16550
 
-static int uart_ns16550_init(void)
+void soc_early_init_hook(void)
 {
 
 	/* On ARC EM Starter kit board,
@@ -25,10 +25,6 @@ static int uart_ns16550_init(void)
 	sys_write32(0, DT_REG_ADDR(DT_INST(1, ns16550))+0x4);
 	sys_write32(0, DT_REG_ADDR(DT_INST(1, ns16550))+0x10);
 #endif /* DT_NODE_HAS_STATUS(DT_INST(1, ns16550), okay) */
-
-	return 0;
 }
 
-SYS_INIT(uart_ns16550_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
-
 #endif /* CONFIG_UART_NS16550 */