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author | David Brownell <david-b@pacbell.net> | 2009-07-16 18:40:55 -0700 |
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committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2009-08-03 09:26:26 +0200 |
commit | 06bffc6ea52d4b390843d295d438b2037d12e5fd (patch) | |
tree | 689ea76a23daa57493debfc4fbbf11984bab7271 /include/configs/M53017EVB.h | |
parent | 301b7db88fbdf7d118efb79b371b2527a2c31868 (diff) | |
download | u-boot-imx-06bffc6ea52d4b390843d295d438b2037d12e5fd.zip u-boot-imx-06bffc6ea52d4b390843d295d438b2037d12e5fd.tar.gz u-boot-imx-06bffc6ea52d4b390843d295d438b2037d12e5fd.tar.bz2 |
rm9200 lowevel_init: don't touch reserved/readonly registers
For some reason the AT91rm9200 lowlevel init writes to a bunch of
reserved or read-only addresses. All the boards seem to define the
value-to-be-written values as zero ... but they shouldn't actually
be writing *anything* there.
No documented erratum justifies these accesses. It looks like maybe
some pre-release BDI-2000 setup code has been carried along by cargo
cult programming since at least late 2004 (per GIT history).
Here's a patch disabling what seems to be bogosity. Tested on a
csb337; there were no behavioral changes.
Signed-off-by: David Brownell <david-b@pacbell.net>
on RM9200ek
Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'include/configs/M53017EVB.h')
0 files changed, 0 insertions, 0 deletions