diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
index e6d336f16a..20614646f7 100644
--- a/arch/sandbox/dts/sandbox.dts
+++ b/arch/sandbox/dts/sandbox.dts
@@ -203,6 +203,11 @@
 		stringarray = "one";
 	};
 
+	spl-test4 {
+		u-boot,dm-pre-reloc;
+		compatible = "sandbox,spl-test.2";
+	};
+
 	square {
 		compatible = "demo-shape";
 		colour = "blue";
diff --git a/tools/dtoc/dtoc.py b/tools/dtoc/dtoc.py
index 11050b66f7..6df7b0da13 100755
--- a/tools/dtoc/dtoc.py
+++ b/tools/dtoc/dtoc.py
@@ -54,6 +54,7 @@ def Conv_name_to_c(name):
     str = name.replace('@', '_at_')
     str = str.replace('-', '_')
     str = str.replace(',', '_')
+    str = str.replace('.', '_')
     str = str.replace('/', '__')
     return str