diff --git a/board/kontron/sl-mx8mm/sl-mx8mm.c b/board/kontron/sl-mx8mm/sl-mx8mm.c
index 6e73ede..6411301 100644
--- a/board/kontron/sl-mx8mm/sl-mx8mm.c
+++ b/board/kontron/sl-mx8mm/sl-mx8mm.c
@@ -123,7 +123,12 @@
 
 int board_late_init(void)
 {
-	env_set("som_type", "sl");
+	if (!fdt_node_check_compatible(gd->fdt_blob, 0, "kontron,imx8mm-n802x-som") ||
+	    !fdt_node_check_compatible(gd->fdt_blob, 0, "kontron,imx8mm-osm-s")) {
+		env_set("som_type", "osm-s");
+	else
+		env_set("som_type", "sl");
+
 	return 0;
 }