4-bit SD Card mode

[M. Warner Losh]

In message: <50503.2001:6f8:101e:0:20e:cff:fe6d:6adb.1181202550.squirrel at webmail.alpha-tierchen.de>
            Björn_König <bkoenig at alpha-tierchen.de> writes:
: Hello,
: 
: I think lot of you know the message 'Setting controller bus width to 1' in
: conjunction with AT91 SD Card interfaces. I'd like to suggest to disable
: this message in src/arm/at91/at91_mci.c for two reasons: 1) it occurs
: excessively and 2) there is no useful information content with this
: message. Since it is improbable that the driver ever supports the 4-bit
: mode we also don't need to be informed whether we use 1-bit or 4-bit mode.
: It is improbable (unless somebody is already working on it) because the
: 4-bit mode requires either polling or a very special interrupt handling
: that is not covered by the publicly available simplified SD Card
: specifications.

Yea.  It should go.  It was there just as a debugging aide.  I thought
that 4-bit mode was covered by the spec, but in any case this message
is lame.

Warner