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>
A large number of boards (all AT91 based) duplicated the ROUND()
macro in their board specific config files. Add the definition to
include/common.h and clean up the board config files.
Signed-off-by: Wolfgang Denk <wd@denx.de>
The following individual I2C commands have been removed: imd, imm, inm,
imw, icrc32, iprobe, iloop, isdram.
The functionality of the individual commands is still available via
the 'i2c' command.
This change only has an impact on those boards which did not have
CONFIG_I2C_CMD_TREE defined.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
The AT91RM9200-EK Evaluation Board supports the AT91RM9200
ARM9-based 32-bit RISC microcontroller and enables real-time code development
and evaluation.
Here is the chip page on Atmel website:
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507
with
- NOR (cfi driver)
- DataFlash
- USB OHCI
- Net
- I2C (hard)
Signed-off-by: Ulf Samuelsson <ulf@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
