On Monday 05 March 2012 07:58:16 Tom Rini wrote: > On 03/04/2012 01:32 PM, Pali Rohár wrote: > > On Sunday 04 March 2012 13:23:44 Tom Rini wrote: > >> On Sun, Mar 4, 2012 at 1:06 PM, Pali Rohár<pali.ro...@gmail.com> wrote: > >>> Hi, > >>> > >>> this commit is breaking MMC support on Nokia N900: > >>> a7778f8fbee098c78b1fa1e1331313a7e217fb30 omap_hsmmc: Wait for CMDI to be > >>> clear > >>> > >>> I'm geting only error message "timedout waiting on cmd inhibit to clear" > >>> and I cannot read files from eMMC and SD card. When I reverted commit > >>> that commit I all is OK. > >> > >> OK, we need to debug what the n900 is doing (do you see this in qemu, > >> real HW or both?) since clearing the bit fixes certain SD cards on > >> other boards (beagleboard and gumstix iirc, but it was a generic > >> issue). Thanks! > > > > RX-51 build of U-Boot in qemu cannot read mmc. It report error about bad > > voltage. This was problem also before that commit. RX-51 Linux kernel does > > not have any problem with mmc, special prepaired Maemo 5 image (with some > > SW on eMMC) from Nokia working fine in qemu. > > > > I ignored above problem in qemu, because mmc worked fine on real n900. But > > after that commit mmc does not working on real n900 too. > > First, if you change SD cards, does the problem go away? Second, my > expectation is that we will make further changes, probably not in time > for v2012.03, to the omap_hsmmc.c driver to bring it more in-line with > how the kernel driver works. Thanks!
Problem is with internal eMMC (which cannot be changed) and with some external Samsung microSD class 10. I do not have other microSD cards for testing now. -- Pali Rohár pali.ro...@gmail.com
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