diff --git a/device.mk b/device.mk
new file mode 100644
index 0000000..288caaf
--- /dev/null
+++ b/device.mk
@@ -0,0 +1,15 @@
+#
+# Copyright (C) 2025 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+# Inherit from xiaomi sm6225-common
+$(call inherit-product, device/xiaomi/sm6225-common/common.mk)
+
+# Inherit the proprietary files
+$(call inherit-product, vendor/xiaomi/sapphire/sapphire-vendor.mk)
+
+# Soong namespaces
+PRODUCT_SOONG_NAMESPACES += \
+    $(LOCAL_PATH)