Bindings/mtd/partitions/partition.yaml

   1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/mtd/partitions/partition.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Partition
   8
   9 description: |
  10   This binding describes a single flash partition. Each partition must have its
  11   relative offset and size specified. Depending on partition function extra
  12   properties can be used.
  13
  14   A partition may be dynamically allocated by a specific parser at runtime.
  15   In this specific case, a specific suffix is required to the node name.
  16   Everything after 'partition-' will be used as the partition name to compare
  17   with the one dynamically allocated by the specific parser.
  18   If the partition contains invalid char a label can be provided that will
  19   be used instead of the node name to make the comparison.
  20   This is used to assign an OF node to the dynamiccally allocated partition
  21   so that subsystem like NVMEM can provide an OF node and declare NVMEM cells.
  22   The OF node will be assigned only if the partition label declared match the
  23   one assigned by the parser at runtime.
  24
  25 maintainers:
  26   - Rafał Miłecki <rafal@milecki.pl>
  27
  28 properties:
  29   reg:
  30     description: partition's offset and size within the flash
  31     maxItems: 1
  32
  33   label:
  34     description: The label / name for this partition. If omitted, the label
  35       is taken from the node name (excluding the unit address).
  36
  37   read-only:
  38     description: This parameter, if present, is a hint that this partition
  39       should only be mounted read-only. This is usually used for flash
  40       partitions containing early-boot firmware images or data which should
  41       not be clobbered.
  42     type: boolean
  43
  44   lock:
  45     description: Do not unlock the partition at initialization time (not
  46       supported on all devices)
  47     type: boolean
  48
  49   slc-mode:
  50     description: This parameter, if present, allows one to emulate SLC mode
  51       on a partition attached to an MLC NAND thus making this partition
  52       immune to paired-pages corruptions
  53     type: boolean
  54
  55   linux,rootfs:
  56     description: Marks partition that contains root filesystem to mount and boot
  57       user space from
  58     type: boolean
  59
  60 if:
  61   not:
  62     required: [ reg ]
  63 then:
  64   properties:
  65     $nodename:
  66       pattern: '^partition-.*$'
  67
  68 # This is a generic file other binding inherit from and extend
  69 additionalProperties: true