diff --git a/drivers/bbram/Kconfig.bbram_emul b/drivers/bbram/Kconfig.bbram_emul
index 4ed2cb5e66e..9fe7bc4d071 100644
--- a/drivers/bbram/Kconfig.bbram_emul
+++ b/drivers/bbram/Kconfig.bbram_emul
@@ -1,7 +1,10 @@
 # Copyright (c) 2021 Google Inc
 # SPDX-License-Identifier: Apache-2.0
 
+DT_COMPAT_ST_BBRAM_EMUL := zephyr,bbram-emul
+
 config BBRAM_EMUL
 	bool "Battery-backed RAM emulated drivers"
+	default $(dt_compat_enabled,${DT_COMPAT_ST_BBRAM_EMUL})
 	help
 	  This option enables the BBRAM emulation driver.
diff --git a/drivers/bbram/Kconfig.npcx b/drivers/bbram/Kconfig.npcx
index 3e95e604fff..cd39f1cd328 100644
--- a/drivers/bbram/Kconfig.npcx
+++ b/drivers/bbram/Kconfig.npcx
@@ -1,8 +1,11 @@
 # Copyright (c) 2021 Google Inc
 # SPDX-License-Identifier: Apache-2.0
 
+DT_COMPAT_ST_BBRAM_NPCX := nuvoton,npcx-bbram
+
 config BBRAM_NPCX
 	bool "Nuvoton NPCX embedded controller (EC) Battery-backed RAM drivers"
 	depends on SOC_FAMILY_NPCX
+	default $(dt_compat_enabled,${DT_COMPAT_ST_BBRAM_NPCX})
 	help
 	  This option enables the BBRAM driver for NPCX family of processors.
diff --git a/drivers/bbram/bbram_npcx.c b/drivers/bbram/bbram_npcx.c
index b7fb8b02ed3..4aa00dd6f08 100644
--- a/drivers/bbram/bbram_npcx.c
+++ b/drivers/bbram/bbram_npcx.c
@@ -7,7 +7,7 @@
 #define DT_DRV_COMPAT nuvoton_npcx_bbram
 
 #include <drivers/bbram.h>
-#include <errono.h>
+#include <errno.h>
 #include <sys/util.h>
 
 #include <logging/log.h>
@@ -74,7 +74,7 @@ static int bbram_npcx_read(const struct device *dev, size_t offset, size_t size,
 	}
 
 
-	bytecpy(data, ((volatile uint8_t *)config->base_addr + offset), size);
+	bytecpy(data, ((uint8_t *)config->base_addr + offset), size);
 	return 0;
 }
 
@@ -87,7 +87,7 @@ static int bbram_npcx_write(const struct device *dev, size_t offset, size_t size
 		return -EFAULT;
 	}
 
-	bytecpy(((volatile uint8_t *)config->base_addr + offset), data, size);
+	bytecpy(((uint8_t *)config->base_addr + offset), data, size);
 	return 0;
 }
 
@@ -102,6 +102,8 @@ static const struct bbram_driver_api bbram_npcx_driver_api = {
 
 static int bbram_npcx_init(const struct device *dev)
 {
+	ARG_UNUSED(dev);
+
 	return 0;
 }