>-----Original Message----- >From: Tonyliu [mailto:bo....@windriver.com] ><snip> >> Could this be a problem related the eSDHC controller (or the driver), >> or is it the memory card? (a 4GB SanDisk Extreme SDHC card, which >> unfortunately is the only card I have available at the moment.) I will keep >> digging into drivers/mmc/host/sdhci.c in search of a solution, and any tips >> to how I should proceed would be greatly appreciated! >> >Hi, >Try the patch in attatchment. By default, on some e300 platforms such as >mpc8308_rdb, the entry "clock-frequency" of section sdchi in DTB is not fixed >by u-boot, so has to >caculate the input clock for sdhci controller explicitly >in driver. > >Tony
Thanks, the missing clock-frequency was part of my problem. The rest was solved by adding some more quirks to the esdhc-driver (SDHCI_QUIRK_FORCE_1_BIT_DATA and SDHCI_QUIRK_RESET_AFTER_REQUEST). Why it is necessary to force 1-bit data transfers I am a bit unsure about, since the mpc8308 reference manual clearly states that 4-bit transfers are supported. Thanks for your help :) -- Maria _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
