Hi Balaji, >> My test shows that I'm having some timeout in some cases (v3.4.60): >> omap_hsmmc omap_hsmmc.0: IRQ Status is 18000 >> omap_hsmmc omap_hsmmc.0: MMC IRQ 0x18000 : ERRI CTO >> mmc0: req done (CMD52): -110: 00000000 00000000 00000000 00000000 >> mmc0: starting CMD52 arg 80000c08 flags 00000195 >> >> omap_hsmmc omap_hsmmc.0: mmc0: CMD5, argument 0x00000000 >> omap_hsmmc omap_hsmmc.0: IRQ Status is 18000 >> omap_hsmmc omap_hsmmc.0: MMC IRQ 0x18000 : ERRI CTO >> mmc0: req failed (CMD5): -110, retrying... >> >> mmc1: starting CMD8 arg 000001aa flags 000002f5 >> omap_hsmmc omap_hsmmc.1: mmc1: CMD8, argument 0x000001aa >> mmc0: starting CMD18 arg 00020000 flags 000000b5 >> omap_hsmmc omap_hsmmc.1: IRQ Status is 18000 >> omap_hsmmc omap_hsmmc.1: MMC IRQ 0x18000 : ERRI CTO >> mmc1: req done (CMD8): -110: 00000000 00000000 00000000 00000000 >> >> So CMD 52,5 and 8 gives me timeout... > > > For SD cards, these cmd's are expected to timeout during card > initialization. When you say that they are expected to timeout for SD are you including for microSD also? So for what will it not timeout normally (CMD 52,5 and 8)? >> Looking at the 3.11.1 there is 2 more validation for UHS that are not in >> 3.4.60: >> omap_hsmmc_set_clock // Enable High-Speed Support >> omap_set_bus_width >> > > Those changes are not for SD3.0 speed modes thx for the confirmation. >> Is it safe to use SDXC with OMAP35x or not? Should this pop a error >> message? > > > SDXC cards should work albeit at High Speed mode (as in SD2.0). > Refer to [1] for card size Vs speed mode/SD spec version. Your link clearly says that there should be no problem running SDXC with Spec 2.0: High Speed SD, SDHC and SDXC --- 25MB/s 2.00 > Can you check if the filesystem type on SDXC card > is supported by the system software running on OMAP35x. By that you mean? I'm using similar script as this one to partition my system: http://git.sakoman.com/git/gitweb.cgi?p=meta-sakoman.git;a=blob;f=scripts/mksdcard.sh;h=a817935dba988f6f0f0c3dd534374797a661034e;hb=HEAD Creating 2 partition boot (FAT32) and rootfs (EXT3): mkfs.vfat -F 32 -n boot ${PART1} mke2fs -j -L rootfs ${PART2} Just to help you understand a bit more the reason of my question. I'm having a MMC error only with (micro)SDXC 64GB ((micro)SDHC 32GB no problem so far) and our system is not booting the rootfs. card mmcblk0: error -110 sending status command, retrying ... (stuck there infinitely if tune2fs -e continue) see my post: http://marc.info/?l=linux-omap&m=137764004920777&w=3 Best Regards, -KA -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
