Re: SD card on Dell D420 (Ricoh R5C822)

[Chris Ball <cjb@laptop.org>]

Hi Mark,

   >   mmc0: error -84 whilst initialising SD card

Not sure how much this'll help, but:

errno -84 is defined in include/asm-generic/errno.h as EILSEQ, and
there are two occurences of EILSEQ in sdhci.c, one of which has a
printk next to it that you aren't seeing.  So, it's likely that you're
seeing:

    else if (intmask & (SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX))
        host->cmd->error = -EILSEQ;

So, it seems like your controller is returning a successful command
response, but with some sort of data error attached.  Have you tried
multiple SD cards, and are they known-working?

If you're sure it's not the card, try passing debug_quirks=1 to the
sdhci module.  (Let me know if you're not sure how to do that.)

Thanks,

- Chris.
-- 
Chris Ball   <cjb@laptop.org>
One Laptop Per Child