after.log

[    2.524053] mmc-bcm2835 3f300000.mmcnr: could not get clk, deferring probe
[    2.524394] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[    2.538535] mmc-bcm2835 3f300000.mmcnr: mmc_debug:0 mmc_debug2:0
[    2.538542] mmc-bcm2835 3f300000.mmcnr: DMA channel allocated
[    2.606332] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[    2.607885] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    2.609435] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    2.612223] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[    2.616918] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[    2.675336] mmc0: host does not support reading read-only switch, assuming write-enable
[    2.678313] mmc0: new high speed SDHC card at address 0007
[    2.679378] mmcblk0: mmc0:0007 SL32G 29.0 GiB
[    2.681973]  mmcblk0: p1 p2
[    2.727926] mmc1: new high speed SDIO card at address 0001
[    3.432825] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    4.156460] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[    8.647880] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[   13.855103] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.bin failed with error -2

before.log

[ixxie@magicbox:~]$ dmesg | grep mmc
[    2.516913] mmc-bcm2835 3f300000.mmcnr: could not get clk, deferring probe
[    2.517258] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[    2.531217] mmc-bcm2835 3f300000.mmcnr: mmc_debug:0 mmc_debug2:0
[    2.531225] mmc-bcm2835 3f300000.mmcnr: DMA channel allocated
[    2.599203] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[    2.600755] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    2.602306] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    2.605093] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[    2.609768] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[    2.668454] mmc0: host does not support reading read-only switch, assuming write-enable
[    2.671439] mmc0: new high speed SDHC card at address 0007
[    2.672603] mmcblk0: mmc0:0007 SL32G 29.0 GiB
[    2.675579]  mmcblk0: p1 p2
[    2.720990] mmc1: new high speed SDIO card at address 0001
[    3.396148] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    4.122848] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[    8.623528] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[   12.996512] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43430-sdio.bin failed with error -2


[ixxie@magicbox:~]$ sudo find /sys -name ios
/sys/kernel/debug/mmc0/ios
/sys/kernel/debug/mmc1/ios