diff --git a/board/pine64/pinebook-pro-rk3399/pinebook-pro-rk3399.c b/board/pine64/pinebook-pro-rk3399/pinebook-pro-rk3399.c
index 516292aaa59..c1c4bbcf66b 100644
--- a/board/pine64/pinebook-pro-rk3399/pinebook-pro-rk3399.c
+++ b/board/pine64/pinebook-pro-rk3399/pinebook-pro-rk3399.c
@@ -38,6 +38,20 @@ out:
 }
 #endif
 
+#ifdef CONFIG_OF_BOARD_SETUP
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+#ifdef CONFIG_ROCKCHIP_EXTERNAL_TPL
+	int rc = fdt_find_and_setprop(blob, "/memory-controller",
+					"status", "okay", sizeof("okay"), 1);
+	if (rc)
+		printf("Unable to enable DMC err=%s\n", fdt_strerror(rc));
+#endif
+
+	return 0;
+}
+#endif
+
 #ifdef CONFIG_MISC_INIT_R
 static void setup_iodomain(void)
 {
diff --git a/board/pine64/rockpro64_rk3399/rockpro64-rk3399.c b/board/pine64/rockpro64_rk3399/rockpro64-rk3399.c
index d79084614f1..7ab6c0e77eb 100644
--- a/board/pine64/rockpro64_rk3399/rockpro64-rk3399.c
+++ b/board/pine64/rockpro64_rk3399/rockpro64-rk3399.c
@@ -54,3 +54,17 @@ int misc_init_r(void)
 }
 
 #endif
+
+#ifdef CONFIG_OF_BOARD_SETUP
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+#ifdef CONFIG_ROCKCHIP_EXTERNAL_TPL
+	int rc = fdt_find_and_setprop(blob, "/memory-controller",
+					"status", "okay", sizeof("okay"), 1);
+	if (rc)
+		printf("Unable to enable DMC err=%s\n", fdt_strerror(rc));
+#endif
+
+	return 0;
+}
+#endif