2014-09-03 10:15 GMT+02:00 Dong Aisheng <dongas86@xxxxxxxxx>: > Hi JM, > > On Tue, Sep 2, 2014 at 11:10 PM, Jean-Michel Hautbois > <jhautbois@xxxxxxxxx> wrote: >> 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. >> > > My iMX6Q SabreSD board seems ok. > What board did you use? > What reading/writing problems did you meet? > I did not see errors in your log. > Can you paste the error log? When CONFIG_MMC_DEBUG=y there is no error. When CONFIG_MMC_DEBUG=n then, I get : [ 2.036958] SW2: Restricting voltage, 3300000-1950000uV [ 2.036965] mmc1: Switching to 1.8V signalling voltage failed [ 2.043714] mmc1: new DDR MMC card at address 0001 [ 2.044738] mmcblk1: mmc1:0001 SEM02G 1.82 GiB [ 2.045007] mmcblk1rpmb: mmc1:0001 SEM02G partition 3 128 KiB [ 2.048345] mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0xb00 [ 2.048352] mmcblk1: retrying using single block read [ 2.048858] mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0x0 [ 2.048933] end_request: I/O error, dev mmcblk1, sector 0 [ 2.049449] mmcblk1: error -84 transferring data, sector 1, nr 7, cmd response 0x900, card status 0x0 [ 2.049459] end_request: I/O error, dev mmcblk1, sector 1 [ 2.049969] mmcblk1: error -84 transferring data, sector 2, nr 6, cmd response 0x900, card status 0x0 [ 2.049978] end_request: I/O error, dev mmcblk1, sector 2 [ 2.050484] mmcblk1: error -84 transferring data, sector 3, nr 5, cmd response 0x900, card status 0x0 [ 2.050493] end_request: I/O error, dev mmcblk1, sector 3 [ 2.050998] mmcblk1: error -84 transferring data, sector 4, nr 4, cmd response 0x900, card status 0x0 [ 2.051008] end_request: I/O error, dev mmcblk1, sector 4 [ 2.051512] mmcblk1: error -84 transferring data, sector 5, nr 3, cmd response 0x900, card status 0x0 [ 2.051521] end_request: I/O error, dev mmcblk1, sector 5 [ 2.052028] mmcblk1: error -84 transferring data, sector 6, nr 2, cmd response 0x900, card status 0x0 [ 2.052038] end_request: I/O error, dev mmcblk1, sector 6 [ 2.052542] mmcblk1: error -84 transferring data, sector 7, nr 1, cmd response 0x900, card status 0x0 [ 2.052551] end_request: I/O error, dev mmcblk1, sector 7 [ 2.052620] Buffer I/O error on device mmcblk1, logical block 0 [ 2.053338] mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0xb00 [ 2.053345] mmcblk1: retrying using single block read [ 2.053849] mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0x0 [ 2.053859] end_request: I/O error, dev mmcblk1, sector 0 [ 2.054378] mmcblk1: error -84 transferring data, sector 1, nr 7, cmd response 0x900, card status 0x0 [ 2.054388] end_request: I/O error, dev mmcblk1, sector 1 [ 2.054892] mmcblk1: error -84 transferring data, sector 2, nr 6, cmd response 0x900, card status 0x0 [ 2.055403] mmcblk1: error -84 transferring data, sector 3, nr 5, cmd response 0x900, card status 0x0 [ 2.055917] mmcblk1: error -84 transferring data, sector 4, nr 4, cmd response 0x900, card status 0x0 [ 2.056428] mmcblk1: error -84 transferring data, sector 5, nr 3, cmd response 0x900, card status 0x0 [ 2.056937] mmcblk1: error -84 transferring data, sector 6, nr 2, cmd response 0x900, card status 0x0 [ 2.057446] mmcblk1: error -84 transferring data, sector 7, nr 1, cmd response 0x900, card status 0x0 [ 2.057460] Buffer I/O error on device mmcblk1, logical block 0 [ 2.057506] mmcblk1: unable to read partition table So, I can't get MMC_DEBUG info when the problem occurs, as it disappears :/. 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
