Re: [PATCH] drivers/block/xsysace - replace in(out)_8/in(out)_be16/in(out)_le16 with generic iowrite(read)8/16(be)
From: Arnd Bergmann
Date: Tue Feb 12 2013 - 06:30:09 EST
On Tuesday 12 February 2013, Benjamin Herrenschmidt wrote:
> It depends how the ARM core operates vs. IO when switched between BE and
> LE, does it keep the same lines doing byte 0 or does it keep the MSB/LSB
> in the same place (and thus changes which lanes contain byte 0) ?
IIRC it changed between older and more recent ARM, at least we have
separate configuration options for "BE-8" big-endian mode on ARMv6
and above, and "BE-32" on older ones.
Currently we don't support platforms upstream that get configured
as BE-32, but the code is there and I know of people using it.
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