1 Representing flash partitions in devicetree
3 Partitions can be represented by sub-nodes of an mtd device. This can be used
4 on platforms which have strong conventions about which portions of a flash are
5 used for what purposes, but which don't use an on-flash partition table such
8 #address-cells & #size-cells must both be present in the mtd device. There are
9 two valid values for both:
10 <1>: for partitions that require a single 32-bit cell to represent their
11 size/address (aka the value is below 4 GiB)
12 <2>: for partitions that require two 32-bit cells to represent their
13 size/address (aka the value is 4 GiB or greater).
16 - reg : The partition's offset and size within the mtd bank.
19 - label : The label / name for this partition. If omitted, the label is taken
20 from the node name (excluding the unit address).
21 - read-only : This parameter, if present, is a hint to Linux that this
22 partition should only be mounted read-only. This is usually used for flash
23 partitions containing early-boot firmware images or data which should not be
35 reg = <0x0000000 0x100000>;
40 reg = <0x0100000 0x200000>;
48 /* a 4 GiB partition */
51 reg = <0x00000000 0x1 0x00000000>;
59 /* an 8 GiB partition */
61 label = "filesystem #1";
62 reg = <0x0 0x00000000 0x2 0x00000000>;
65 /* a 4 GiB partition */
67 label = "filesystem #2";
68 reg = <0x2 0x00000000 0x1 0x00000000>;