diff --git a/soc/arc/snps_emsk/dts_fixup.h b/soc/arc/snps_emsk/dts_fixup.h
index 61726c96604..173325e8e25 100644
--- a/soc/arc/snps_emsk/dts_fixup.h
+++ b/soc/arc/snps_emsk/dts_fixup.h
@@ -3,11 +3,11 @@
 /* SoC level DTS fixup file */
 
 /* CCM configuration */
-#define DT_DCCM_BASE_ADDRESS		DT_INST_0_ARC_DCCM_BASE_ADDRESS
-#define DT_DCCM_SIZE			(DT_INST_0_ARC_DCCM_SIZE >> 10)
+#define DT_DCCM_BASE_ADDRESS		DT_REG_ADDR(DT_INST(0, arc_dccm))
+#define DT_DCCM_SIZE			(DT_REG_SIZE(DT_INST(0, arc_dccm)) >> 10)
 
-#define DT_ICCM_BASE_ADDRESS		DT_INST_0_ARC_ICCM_BASE_ADDRESS
-#define DT_ICCM_SIZE			(DT_INST_0_ARC_ICCM_SIZE >> 10)
+#define DT_ICCM_BASE_ADDRESS		DT_REG_ADDR(DT_INST(0, arc_iccm))
+#define DT_ICCM_SIZE			(DT_REG_SIZE(DT_INST(0, arc_iccm)) >> 10)
 
 #define DT_DDR_BASE_ADDRESS		DT_MMIO_SRAM_10000000_BASE_ADDRESS
 #define DT_DDR_SIZE			(DT_MMIO_SRAM_10000000_SIZE >> 10)
diff --git a/soc/arc/snps_emsk/soc_config.c b/soc/arc/snps_emsk/soc_config.c
index 4dd05b240c1..d5b67dc6e78 100644
--- a/soc/arc/snps_emsk/soc_config.c
+++ b/soc/arc/snps_emsk/soc_config.c
@@ -18,14 +18,14 @@ static int uart_ns16550_init(struct device *dev)
 	/* On ARC EM Starter kit board,
 	 * send the UART the command to clear the interrupt
 	 */
-#ifdef DT_INST_0_NS16550
-	sys_write32(0, DT_INST_0_NS16550_BASE_ADDRESS+0x4);
-	sys_write32(0, DT_INST_0_NS16550_BASE_ADDRESS+0x10);
-#endif /* DT_INST_0_NS16550 */
-#ifdef DT_INST_1_NS16550
-	sys_write32(0, DT_INST_1_NS16550_BASE_ADDRESS+0x4);
-	sys_write32(0, DT_INST_1_NS16550_BASE_ADDRESS+0x10);
-#endif /* DT_INST_1_NS16550 */
+#if DT_HAS_NODE(DT_INST(0, ns16550))
+	sys_write32(0, DT_REG_ADDR(DT_INST(0, ns16550))+0x4);
+	sys_write32(0, DT_REG_ADDR(DT_INST(0, ns16550))+0x10);
+#endif /* DT_HAS_NODE(DT_INST(0, ns16550)) */
+#if DT_HAS_NODE(DT_INST(1, ns16550))
+	sys_write32(0, DT_REG_ADDR(DT_INST(1, ns16550))+0x4);
+	sys_write32(0, DT_REG_ADDR(DT_INST(1, ns16550))+0x10);
+#endif /* DT_HAS_NODE(DT_INST(1, ns16550)) */
 
 	return 0;
 }
diff --git a/soc/arc/snps_nsim/dts_fixup.h b/soc/arc/snps_nsim/dts_fixup.h
index 2fa8e04c8f2..8a48fbdac68 100644
--- a/soc/arc/snps_nsim/dts_fixup.h
+++ b/soc/arc/snps_nsim/dts_fixup.h
@@ -3,10 +3,10 @@
 /* SoC level DTS fixup file */
 
 /* CCM configuration */
-#define DT_DCCM_BASE_ADDRESS       DT_INST_0_ARC_DCCM_BASE_ADDRESS
-#define DT_DCCM_SIZE               (DT_INST_0_ARC_DCCM_SIZE >> 10)
+#define DT_DCCM_BASE_ADDRESS       DT_REG_ADDR(DT_INST(0, arc_dccm))
+#define DT_DCCM_SIZE               (DT_REG_SIZE(DT_INST(0, arc_dccm)) >> 10)
 
-#define DT_ICCM_BASE_ADDRESS       DT_INST_0_ARC_ICCM_BASE_ADDRESS
-#define DT_ICCM_SIZE               (DT_INST_0_ARC_ICCM_SIZE >> 10)
+#define DT_ICCM_BASE_ADDRESS       DT_REG_ADDR(DT_INST(0, arc_iccm))
+#define DT_ICCM_SIZE               (DT_REG_SIZE(DT_INST(0, arc_iccm)) >> 10)
 
 /* End of SoC Level DTS fixup file */