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r: 44764
b: refs/heads/master
c: 173935f
h: refs/heads/master
v: v3
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Vitaly Wool authored and Paul Mackerras committed Dec 20, 2006
1 parent 748c09b commit f2f5f5a
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2 changes: 1 addition & 1 deletion [refs]
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refs/heads/master: 3f245e2a1eaf603cf9cf4820eb5dd8c5637bc71a
refs/heads/master: 173935f3619ae99fef0cea1dbe4de9c83d6c8e72
19 changes: 11 additions & 8 deletions trunk/Documentation/powerpc/booting-without-of.txt
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Expand Up @@ -1703,29 +1703,32 @@ platforms are moved over to use the flattened-device-tree model.
Required properties:

- device_type : has to be "rom"
- compatible : Should specify what this ROM device is compatible with
(i.e. "onenand"). Currently, this is most likely to be "direct-mapped"
(which corresponds to the MTD physmap mapping driver).
- regs : Offset and length of the register set (or memory mapping) for
- compatible : Should specify what this flash device is compatible with.
Currently, this is most likely to be "direct-mapped" (which
corresponds to the MTD physmap mapping driver).
- reg : Offset and length of the register set (or memory mapping) for
the device.
- bank-width : Width of the flash data bus in bytes. Required
for the NOR flashes (compatible == "direct-mapped" and others) ONLY.

Recommended properties :

- bank-width : Width of the flash data bus in bytes. Required
for the NOR flashes (compatible == "direct-mapped" and others) ONLY.
- partitions : Several pairs of 32-bit values where the first value is
partition's offset from the start of the device and the second one is
partition size in bytes with LSB used to signify a read only
partititon (so, the parition size should always be an even number).
partition (so, the parition size should always be an even number).
- partition-names : The list of concatenated zero terminated strings
representing the partition names.
- probe-type : The type of probe which should be done for the chip
(JEDEC vs CFI actually). Valid ONLY for NOR flashes.

Example:

flash@ff000000 {
device_type = "rom";
compatible = "direct-mapped";
regs = <ff000000 01000000>;
probe-type = "CFI";
reg = <ff000000 01000000>;
bank-width = <4>;
partitions = <00000000 00f80000
00f80000 00080001>;
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