[PATCH] mtd/maps: add mtd-ram support to physmap_of
albrecht.dress at arcor.de
Fri Jul 31 15:47:10 EDT 2009
Am 17.07.09 14:39 schrieb(en) Wolfram Sang:
> Use physmap_of to access RAMs as mtd and add documenation for it.
> This approach is a lot less intrusive as adding an of-wrapper around
> plat-ram.c. As most extensions of plat-ram.c (e.g. custom
> map-functions) can't be mapped to the device tree anyhow, extending
> physmap_of seems to be the cleanest approach.
The patch works nicely on a custom (roughly Icecube) based 5200B board,
with a Renesas static ram, no partitions and a jffs2 file system on
it. I had to add some more tweaks to physmap_of.c as to work around
the 5200's limitations accessing chips in 16-bit mode through the local
bus, which is a lot easier and cleaner with this patch than with the
old one (of 05 June 09).
Acked-by: Albrecht Dreß <albrecht.dress at arcor.de>
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