2014-09-02 11:20 GMT+02:00 Jean-Michel Hautbois <jean-michel.hautbois@xxxxxxxxxxx>: > Hi there, > > I start a new thread, as I have done lots of test and this will be clearer. > I have problems reading and writing eMMC on my i.MX6 board with 3.17-rc3. > Sometimes I don't have read errors explicitly in dmesg, but fdisk has > no effects. > I activated MMC debug in my config file, and here is an extract of > mmc0 register dump and all mmc1 part. > On Freescale kernel, I confirm it works well with the same board and > sample, I can write a partition on mmc1. <snip> > [ 3.099853] sdhci [sdhci_add_host()]: mmc1: Auto-CMD23 available > [ 3.100143] sdhci-esdhc-imx 219c000.usdhc: No vqmmc regulator found I have set my vqmmc-supply in my DT, and it works well now... I don't really know why specifying vqmmc-supply is better, but I can assure it is : I can mount the partition created on the eMMC. The only remaining errors are on boot partitions reading. Maybe should we have a parameter in DT in order to tell if we want to get thse partitions or not, instead of the return value of mmc_boot_partition_access() which is always 1 (if I don't miss something) ? Thanks, JM -- 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
