esp-matter/examples/thread_border_router/partitions.csv

1	# Name, Type, SubType, Offset, Size, Flags
2	# Note: Firmware partition offset needs to be 64K aligned, initial 36K (9 sectors) are reserved for bootloader and partition table
3	nvs, data, nvs, , 0xA000,
4	phy_init, data, phy, , 0x1000,
5	factory, app, factory, , 3000K,
6	rcp_fw, data, spiffs, , 600K,