root@localhost:~# dmesg | grep mmc
[    0.000000] Kernel command line: console=ttyS0,115200 root=/dev/mmcblk0p2 rootwait panic=10
[    0.772268] sunxi-mmc 1c0f000.mmc: No vqmmc regulator found
[    0.778517] sunxi-mmc 1c0f000.mmc: Got CD GPIO
[    0.818855] sunxi-mmc 1c0f000.mmc: base:0xf0872000 irq:22
[    0.824589] sunxi-mmc 1c10000.mmc: No vqmmc regulator found
[    0.830716] sunxi-mmc 1c10000.mmc: allocated mmc-pwrseq
[    0.868840] sunxi-mmc 1c10000.mmc: base:0xf0876000 irq:23
[    0.961323] Waiting for root device /dev/mmcblk0p2...
[    0.971658] mmc0: host does not support reading read-only switch, assuming write-enable
[    0.982189] mmc0: new high speed SDHC card at address 0007
[    0.988624] mmcblk0: mmc0:0007 SD8GB 7.42 GiB
[    0.994722]  mmcblk0: p1 p2
[    1.004396] sunxi-mmc 1c10000.mmc: smc 1 err, cmd 8, RTO !!
[    1.019397] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[    1.026385] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    1.033401] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    1.041617] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[    1.070310] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to feature incompatibilities
[    1.079433] EXT4-fs (mmcblk0p2): couldn't mount as ext2 due to feature incompatibilities
[    1.100917] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    1.180611] mmc1: new high speed SDIO card at address 0001