Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/mtd/partition.txt
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1 Flash partitions in device tree 2 =============================== 3 4 Flash devices can be partitioned into one or more functional ranges (e.g. "boot 5 code", "nvram", "kernel"). 6 7 Different devices may be partitioned in a different ways. Some may use a fixed 8 flash layout set at production time. Some may use on-flash table that describes 9 the geometry and naming/purpose of each functional region. It is also possible 10 to see these methods mixed. 11 12 To assist system software in locating partitions, we allow describing which 13 method is used for a given flash device. To describe the method there should be 14 a subnode of the flash device that is named 'partitions'. It must have a 15 'compatible' property, which is used to identify the method to use. 16 17 When a single partition is represented with a DT node (it depends on a used 18 format) it may also be described using above rules ('compatible' and optionally 19 some extra properties / subnodes). It allows describing more complex, 20 hierarchical (multi-level) layouts and should be used if there is some 21 significant relation between partitions or some partition internally uses 22 another partitioning method. 23 24 Available bindings are listed in the "partitions" subdirectory. 25 26 27 Deprecated: partitions defined in flash node 28 ============================================ 29 30 For backwards compatibility partitions as direct subnodes of the flash device are 31 supported. This use is discouraged. 32 NOTE: also for backwards compatibility, direct subnodes that have a compatible 33 string are not considered partitions, as they may be used for other bindings.
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