samples/subsys/fs/fat_fs/boards/nrf52840dk_nrf52840.overlay

/*
 * Copyright (c) 2023 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/* Because FAT FS needs at least 64kiB partition and default
 * storage_partition is 32kiB for that board, we need to reorgatnize
 * partitions to get at least 64KiB.
 * This overlay removes image slot partitions and strips each of 64kiB,
 * and removes the storage partition to add the additional 2*64kiB to
 * it.
 */
/delete-node/ &slot0_partition;
/delete-node/ &slot1_partition;
/delete-node/ &storage_partition;

&flash0 {

	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		slot0_partition: partition@c000 {
			reg = <0x0000C000 0x00066000>;
		};
		slot1_partition: partition@72000 {
			reg = <0x00072000 0x00066000>;
		};

		storage_partition: partition@d8000 {
			label = "storage";
			reg = <0x000d8000 0x00028000>;
		};
	};
};

/ {
	msc_disk0 {
		status="okay";
		compatible = "zephyr,flash-disk";
		partition = <&storage_partition>;
		disk-name = "SD";
		/* cache-size == page erase size */
		cache-size = <4096>;
	};
};