2014-08-08 9:06 GMT+02:00 Jean-Michel Hautbois <jean-michel.hautbois@xxxxxxxxxxx>: > 2014-08-08 5:12 GMT+02:00 Jaehoon Chung <jh80.chung@xxxxxxxxxxx>: >> On 08/08/2014 12:44 AM, Jean-Michel Hautbois wrote: >>> 2014-08-07 17:02 GMT+02:00 Hsin-Hsiang Tseng <hsinhsiangtseng@xxxxxxxxx>: >>>>> [ 1.366291] mmcblk1: error -84 transferring data, sector 0, nr 8, >>>>> cmd response 0x900, card status 0xb00 >>>>> [ 1.374409] mmcblk1: retrying using single block read >>>>> [ 1.378810] mmcblk1: error -84 transferring data, sector 0, nr 8, >>>>> cmd response 0x900, card status 0x0 >>>> At first, the kernel driver uses multiple read(cmd 18) to read data >>>> from sector 0 to sector 8, but fail. >>>> And then, retry by single read(cmd 17), but still fail... >>>> >>>>> [ 2.050460] mmcblk1boot0: unable to read partition table >>>> You are trying to read boot partition data, as I remember when we >>>> access boot partition, we need to sync the bus width, frequency and >>>> timing(SDR, DDR). >> >> If you don't access at boot partition, use the MMC_CAP2_BOOTPART_NOACC. > > How can I do that properly ? In modified include/linux/mmc/host.h in order to return 0 in the function mmc_boot_partition_access(). I don't have boot partition access, but still I/O errors : [ 4.518031] mmcblk1: error -84 transferring data, sector 12, nr 4, cmd response 0x900, card status 0x0 [ 4.518063] mmc1: starting CMD17 arg 00001a00 flags 000000b5 [ 4.518085] mmc1: blksz 512 blocks 1 flags 00000200 tsac 100 ms nsac 0 [ 4.518147] sdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00000001 [ 4.518478] sdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00200002 [ 4.518545] mmc1: req done (CMD17): 0: 00000900 00000000 00000000 00000000 [ 4.518563] mmc1: 0 bytes transferred: -84 [ 4.518646] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000002 [ 4.518690] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001 [ 4.518732] mmc0: req done (CMD18): 0: 00000900 00000000 00000000 00000000 [ 4.518746] mmc0: 4096 bytes transferred: 0 [ 4.518756] mmc0: (CMD12): 0: 00000b00 00000000 00000000 00000000 [ 4.518783] mmc1: starting CMD13 arg 00010000 flags 00000195 [ 4.518826] sdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00000001 [ 4.518849] mmc1: req done (CMD13): 0: 00000900 00000000 00000000 00000000 [ 4.519005] mmc0: starting CMD18 arg 00062000 flags 000000b5 [ 4.519022] mmc0: blksz 512 blocks 8 flags 00000200 tsac 100 ms nsac 0 [ 4.519042] mmc0: CMD12 arg 00000000 flags 00000095 [ 4.519106] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001 [ 4.521216] mmcblk1: error -84 transferring data, sector 13, nr 3, cmd response 0x900, card status 0x0 [ 4.521247] mmc1: starting CMD17 arg 00001c00 flags 000000b5 [ 4.521258] mmc1: blksz 512 blocks 1 flags 00000200 tsac 100 ms nsac 0 [ 4.521309] sdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00000001 [ 4.521502] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000002 [ 4.521539] sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001 [ 4.521566] mmc0: req done (CMD18): 0: 00000900 00000000 00000000 00000000 [ 4.521575] mmc0: 4096 bytes transferred: 0 [ 4.521585] mmc0: (CMD12): 0: 00000b00 00000000 00000000 00000000 [ 4.521646] sdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00200002 [ 4.521678] mmc1: req done (CMD17): 0: 00000900 00000000 00000000 00000000 [ 4.521688] mmc1: 0 bytes transferred: -84 [ 4.521746] mmc1: starting CMD13 arg 00010000 flags 00000195 [ 4.521790] sdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00000001 [ 4.521813] mmc1: req done (CMD13): 0: 00000900 00000000 00000000 00000000 [ 4.523600] mmcblk1: error -84 transferring data, sector 14, nr 2, cmd response 0x900, card status 0x0 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
