CVS commit: src/sys

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Thu Dec 13 06:43:38 UTC 2012

Modified Files:
        src/sys/arch/arm/omap: omap3_sdhc.c
        src/sys/dev/sdmmc: sdhc.c sdhcvar.h

Log Message:
Implement TI AM335x's SDHC reset quirk.  Beaglebone SDHC works now!

On the AM335x, we first must wait for the controller to acknowledge
the reset; then we can wait for the reset to complete.

I believe this quirk also applies to the OMAP4 ES, but I don't have
one of those to test and we don't seem to have an obvious conditional
for it anyway.

This quirk may work for controllers that don't require it too, but I
am nervous about doing it by default because if we miss the reset
acknowledgement, then we'll just time out even though everything is
really hunky-dory.

Also, for all sdhc, don't bother writing 0 in sdhc_soft_reset while
waiting for the reset to complete; there is no need.

ok matt


To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.6 src/sys/arch/arm/omap/omap3_sdhc.c
cvs rdiff -u -r1.34 -r1.35 src/sys/dev/sdmmc/sdhc.c
cvs rdiff -u -r1.10 -r1.11 src/sys/dev/sdmmc/sdhcvar.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.