diff --git a/src/mips/brcm/bcm97xxx-nand-cs1-bch4.dtsi b/src/mips/brcm/bcm97xxx-nand-cs1-bch4.dtsi
new file mode 100644
index 0000000..7b5afef
--- /dev/null
+++ b/src/mips/brcm/bcm97xxx-nand-cs1-bch4.dtsi
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+&nand {
+	nandcs@1 {
+		compatible = "brcm,nandcs";
+		reg = <1>;
+		nand-on-flash-bbt;
+
+		nand-ecc-strength = <4>;
+		nand-ecc-step-size = <512>;
+		brcm,nand-oob-sector-size = <16>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			flash1.rootfs@0 {
+				reg = <0x0 0x10000000>;
+			};
+
+			flash1.kernel@10000000 {
+				reg = <0x10000000 0x400000>;
+			};
+		};
+	};
+};