dts: vendor: raspberrypi: 4M partitions for raspberrypi

dts/vendor/raspberrypi/partitions_4M_default.dtsi

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+/*
+ * Copyright (c) 2025 Beechwoods Software, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <raspberrypi/partitions_4M_storage.dtsi>

dts/vendor/raspberrypi/partitions_4M_storage.dtsi

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2025 Beechwoods Software, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&flash0 {
+	status = "okay";
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <0x1>;
+		#size-cells = <0x1>;
+
+		code_partition: partition@0 {
+			label = "code";
+			reg = <0x0 DT_SIZE_M(1)>;
+			read-only;
+		};
+
+		storage_partition: partition@100000 {
+			label = "storage";
+			reg = <0x100000 DT_SIZE_M(3)>;
+		};
+	};
+};

dts/vendor/raspberrypi/partitions_4M_sysbuild.dtsi

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2025 Beechwoods Software, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&flash0 {
+	status = "okay";
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <0x1>;
+		#size-cells = <0x1>;
+
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x0 0x10000>;
+		};
+
+		slot0_partition: partition@10000 {
+			label = "image-0";
+			reg = <0x10000 0xd0000>;
+		};
+
+		slot1_partition: partition@e0000 {
+			label = "image-1";
+			reg = <0xe0000 0xd0000>;
+		};
+
+		storage_partition: partition@1b0000 {
+			label = "storage";
+			reg = <0x1b0000 0x250000>;
+		};
+	};
+};