esp-idf/examples/openthread/ot_br/partitions.csv

1	# Name, Type, SubType, Offset, Size, Flags
2	# Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
3	nvs, data, nvs, 0x9000, 0x6000,
4	phy_init, data, phy, 0xf000, 0x1000,
5	factory, app, factory, 0x10000, 1800K,