Messages in this thread | | | Date | Wed, 28 May 2008 15:42:43 +0200 | From | Pierre Ossman <> | Subject | Re: 2.6.24 not recognizing 2G MMC card? |
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On Wed, 21 May 2008 13:21:04 -0400 "J. Bruce Fields" <bfields@fieldses.org> wrote:
> Please forgive a somewhat naive question--I'm not sure how to go about > debugging this kind of thing: > > I have a Dell 1420n with card readers reported by lspci as: > > 03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22) > 03:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12) > > I have a 512MB MicroSD card which seems to be recognized fine, but a 2GB > MMC card is not. >
Do you have any other MMC cards that work? Ricoh doesn't something silly when it comes to MMC cards that fouls things up.
> > Anything I should try? Thanks in advance for any suggestions. >
If you have a newer controller, then the ricoh_mmc module won't be able to do its magic. Try the following patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=882c49164d72c45f37d7fa1bb3de7c31cf1a5fab
Rgds -- -- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org rdesktop, core developer http://www.rdesktop.org
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