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| author | Jamie Lentin <jm@lentin.co.uk> | 2012-04-18 11:06:41 +0100 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2012-05-15 02:29:11 +0000 |
| commit | a0fabf722c9dc73a3eed24ce166476ddb00eda1e (patch) | |
| tree | 1a7aec13bc1eee977cb2e5fbeaa0f9540aab5b84 /Documentation | |
| parent | 9007d1007317658d5b32bda9f59c797c59ce4d47 (diff) | |
mtd: Add orion_nand devicetree bindings
Allow a NAND chip using the orion_nand driver to be described using devicetree.
Changes since last submission (V4) [Addressing comments by]:-
* WARN when bank-width is out of range [Andrew Lunn]
Changes since last submission (V3):-
* Document all parameters [Grant Likely]
* Convert bank-width to be in bytes
* Add explicit defaults for cle, ale and bank-width
Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/orion-nand.txt | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mtd/orion-nand.txt b/Documentation/devicetree/bindings/mtd/orion-nand.txt new file mode 100644 index 00000000000..b2356b7d2fa --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/orion-nand.txt @@ -0,0 +1,50 @@ +NAND support for Marvell Orion SoC platforms + +Required properties: +- compatible : "mrvl,orion-nand". +- reg : Base physical address of the NAND and length of memory mapped + region + +Optional properties: +- cle : Address line number connected to CLE. Default is 0 +- ale : Address line number connected to ALE. Default is 1 +- bank-width : Width in bytes of the device. Default is 1 +- chip-delay : Chip dependent delay for transferring data from array to read + registers in usecs + +The device tree may optionally contain sub-nodes describing partitions of the +address space. See partition.txt for more detail. + +Example: + +nand@f4000000 { + #address-cells = <1>; + #size-cells = <1>; + cle = <0>; + ale = <1>; + bank-width = <1>; + chip-delay = <25>; + compatible = "mrvl,orion-nand"; + reg = <0xf4000000 0x400>; + + partition@0 { + label = "u-boot"; + reg = <0x0000000 0x100000>; + read-only; + }; + + partition@100000 { + label = "uImage"; + reg = <0x0100000 0x200000>; + }; + + partition@300000 { + label = "dtb"; + reg = <0x0300000 0x100000>; + }; + + partition@400000 { + label = "root"; + reg = <0x0400000 0x7d00000>; + }; +}; |