Tom Warren wrote at Tuesday, October 04, 2011 2:52 PM: > Stephen Warren wrote at Tuesday, October 04, 2011 10:33 AM: > > Modify board_mmc_init to configure SDMMC4 for an 8-bit bus, since that's > > what is wired up on the board. > > > [Tom Warren] Did you try this and then do a mmcinfo to see what you get back? > On my Seaboard T20-A03, > initializing with 8-bit arg gets you 1-bit back on mmcinfo; using 4-bit (as I > had it) gets you back 4- > bit. Although it's wired for all 8 data bits, I'm not sure the eMMC > controller or device or I/F > handles 8 bits correctly. Need to do some more research here, but we should > leave this @ 4-bit for now > IMO.
Ah yes, I see the same issue. I had only validated that running "mmc part" and ext2load still operated correctly. I see the exact same issue on Harmony's J26 port, which I'd also marked as 8-bit. I guess the Tegra MMC driver doesn't support 8-bit mode or something. I'll take a quick look and see if there's anything obvious. If not, I'll just drop that patch from the series. Thanks for taking a look. -- nvpublic _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
