diff --git a/board/freescale/imx8qm_mek/imx8qm_mek.c b/board/freescale/imx8qm_mek/imx8qm_mek.c
index c9b9b25..c0cae35 100644
--- a/board/freescale/imx8qm_mek/imx8qm_mek.c
+++ b/board/freescale/imx8qm_mek/imx8qm_mek.c
@@ -123,10 +123,23 @@
 
 int board_late_init(void)
 {
+	char *fdt_file;
+	bool m4_booted;
+
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 	env_set("board_name", "MEK");
 	env_set("board_rev", "iMX8QM");
 #endif
 
+	fdt_file = env_get("fdt_file");
+	m4_booted = m4_parts_booted();
+
+	if (fdt_file && !strcmp(fdt_file, "undefined")) {
+		if (m4_booted)
+			env_set("fdt_file", "imx8qm-mek-rpmsg.dtb");
+		else
+			env_set("fdt_file", "imx8qm-mek.dtb");
+	}
+
 	return 0;
 }
diff --git a/include/configs/imx8qm_mek.h b/include/configs/imx8qm_mek.h
index 97170dc..22d80f1 100644
--- a/include/configs/imx8qm_mek.h
+++ b/include/configs/imx8qm_mek.h
@@ -70,7 +70,7 @@
 	"fdt_addr=0x83000000\0"			\
 	"fdt_high=0xffffffffffffffff\0"		\
 	"boot_fdt=try\0" \
-	"fdt_file=imx8qm-mek.dtb\0" \
+	"fdt_file=undefined\0" \
 	"initrd_addr=0x83800000\0"		\
 	"initrd_high=0xffffffffffffffff\0" \
 	"mmcdev="__stringify(CONFIG_SYS_MMC_ENV_DEV)"\0" \