Weird 5200/mtd-ram problem
Wolfram Sang
w.sang at pengutronix.de
Tue May 26 07:47:18 EST 2009
> A word or long copy of 0x0055aaff with U-Boot works fine, but a byte
> copy filled the whole ram with 0x0000aaaa. The reason is apparently
> that the chip is attached to the local bus in 16-bit mode, which is
> incompatible with byte accesses. However, the Local Bus doesn't provide
> "low byte" or "high byte" indicators in non-muxed mode. How is this
> supposed to work then?
Hmm, as I feared... we were bitten by this, too:
http://thread.gmane.org/gmane.linux.drivers.mtd/21521
There is no generic solution yet :(
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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