diff options
| author | Vitaly Wool <vitalywool@gmail.com> | 2006-12-19 16:44:25 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-12-20 06:37:48 +0100 |
| commit | 173935f3619ae99fef0cea1dbe4de9c83d6c8e72 (patch) | |
| tree | 581b9f4fb84cddbd1cd999c3e893f2473d912cc8 /Documentation/powerpc/booting-without-of.txt | |
| parent | [POWERPC] Probe Efika platform before CHRP. (diff) | |
| download | linux-173935f3619ae99fef0cea1dbe4de9c83d6c8e72.tar.xz linux-173935f3619ae99fef0cea1dbe4de9c83d6c8e72.zip | |
[POWERPC] Update MTD OF documentation
This updates the Documentation/powerpc part of the MTD OF
implementation with the new field probe-type. Its support has already
been implemented in MTD part (drivers/mtd/maps/physmap_of.c).
Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'Documentation/powerpc/booting-without-of.txt')
| -rw-r--r-- | Documentation/powerpc/booting-without-of.txt | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt index b3bd36668db3..33994271cb3b 100644 --- a/Documentation/powerpc/booting-without-of.txt +++ b/Documentation/powerpc/booting-without-of.txt @@ -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>; |