From: David F. <dav...@ya...> - 2005-03-12 21:27:35
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In all of the recent images MMC & SD cards work fine in MMC or SD modes. SPI is not used. All you have to do in linux is mount /mnt/mmc since there is an entry in the /etc/fstab. This entry assumes cards are formatted with FAT (as all cards are shipped).. The kernel drivers are modular and loaded as needed. U-boot last I checked was having trouble with my SanDisk SD card, although the MMC cards work fine. mmcinit is all you need for this. David. --- ca...@t-... wrote: > Hello, > > is it possible to send own SPI commands on MMC > connector and also get the responses back ? > Perhaps even from user mode programms ? Or must > i / can i remove the kernel module / kernel > part, to access the port registers of the > xscale ? I think writing to the registers like > pxaregs would block me from accessing if > someone else already have access to it ? > > Can someone give me a bit more details, how MMC > stuff is working on gumstix ? > > Regards, > > Martin |
From: David F. <dav...@ya...> - 2005-03-13 01:48:47
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Martin, As far as I know there is no open source SDIO drivers available for linux. It is not (yet) possible to use this type of network card. I saw somewhere, maybe even an old post to this list of a commercial offering for a SDIO stack. David. --- ca...@t-... wrote: > Hello David, > > > In all of the recent images MMC & SD cards > work > > fine in MMC or SD modes. SPI is not used. All > > you have to do in linux is mount /mnt/mmc > since > > there is an entry in the /etc/fstab. This > entry > > assumes cards are formatted with FAT (as all > > cards are shipped).. The kernel drivers are > > modular and loaded as needed. > > Background for my question was / is: I have a > SDIO WLAN card, which i want > to use (i have not yet much info about it, > manufacturer is sychip, sandisk > and socket sell them, in my version no memory > on it). Before using the card, > the firmware must be downloaded, with special > SDIO commands, which are > different than accessing the normal file system > on a MMC / SD. > > Regards, > > Martin > > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT > Products from real users. > Discover which products truly live up to the > hype. Start reading now. > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > |
From: Craig H. <cr...@hu...> - 2005-03-14 19:55:17
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It's on the 3rd party developers page on the Wiki. But sounds like Martin is basically in the mood to write his own SDIO driver, and sounds like he's got help from his card manufacturer, if they're specifying what the SDIO commands are to load the card's firmware. Martin, take a look at the files driver/mmc/pxamci.c and the other mmc driver files in the drivers/mmc directory. Probably easiest to start from that as a base. C On Mar 12, 2005, at 5:48 PM, David Farrell wrote: > Martin, > As far as I know there is no open source SDIO > drivers available for linux. It is not (yet) > possible to use this type of network card. > I saw somewhere, maybe even an old post to this > list of a commercial offering for a SDIO stack. > > David. > > > --- ca...@t-... wrote: >> Hello David, >> >>> In all of the recent images MMC & SD cards >> work >>> fine in MMC or SD modes. SPI is not used. All >>> you have to do in linux is mount /mnt/mmc >> since >>> there is an entry in the /etc/fstab. This >> entry >>> assumes cards are formatted with FAT (as all >>> cards are shipped).. The kernel drivers are >>> modular and loaded as needed. >> >> Background for my question was / is: I have a >> SDIO WLAN card, which i want >> to use (i have not yet much info about it, >> manufacturer is sychip, sandisk >> and socket sell them, in my version no memory >> on it). Before using the card, >> the firmware must be downloaded, with special >> SDIO commands, which are >> different than accessing the normal file system >> on a MMC / SD. >> >> Regards, >> >> Martin >> >> >> >> > ------------------------------------------------------- >> SF email is sponsored by - The IT Product Guide >> Read honest & candid reviews on hundreds of IT >> Products from real users. >> Discover which products truly live up to the >> hype. Start reading now. >> > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click >> _______________________________________________ >> gumstix-users mailing list >> gum...@li... >> > https://lists.sourceforge.net/lists/listinfo/gumstix-users >> > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT Products from real > users. > Discover which products truly live up to the hype. Start reading now. > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users |
From: <ca...@t-...> - 2005-03-12 21:58:49
|
Hello David, > In all of the recent images MMC & SD cards work > fine in MMC or SD modes. SPI is not used. All > you have to do in linux is mount /mnt/mmc since > there is an entry in the /etc/fstab. This entry > assumes cards are formatted with FAT (as all > cards are shipped).. The kernel drivers are > modular and loaded as needed. Background for my question was / is: I have a SDIO WLAN card, which i want to use (i have not yet much info about it, manufacturer is sychip, sandisk and socket sell them, in my version no memory on it). Before using the card, the firmware must be downloaded, with special SDIO commands, which are different than accessing the normal file system on a MMC / SD. Regards, Martin |