diff --git a/drivers/ipm/ipm_cavs_idc_priv.h b/drivers/ipm/ipm_cavs_idc_priv.h
index ff64018c91f..056be827535 100644
--- a/drivers/ipm/ipm_cavs_idc_priv.h
+++ b/drivers/ipm/ipm_cavs_idc_priv.h
@@ -7,9 +7,9 @@
 #ifndef ZEPHYR_DRIVERS_IPM_IPM_CAVS_IDC_PRIV_H_
 #define ZEPHYR_DRIVERS_IPM_IPM_CAVS_IDC_PRIV_H_
 
-#define IDC_REG_SIZE		DT_INST_REG_SIZE(0)
+#define IDC_REG_SIZE		DT_REG_SIZE(DT_INST(0, intel_cavs_idc))
 #define IDC_REG_BASE(x)		\
-	(DT_INST_REG_ADDR(0) + x * IDC_REG_SIZE)
+	(DT_REG_ADDR(DT_INST(0, intel_cavs_idc)) + x * IDC_REG_SIZE)
 
 #define IDC_CPU_OFFSET		0x10