SCSI, SD and MMC activity during boot

dmesg.txt

root@linaro-alip:~# dmesg | egrep '(sd|mmc|scsi)'
[    3.427017] scsi host0: ufshcd
[    3.546211] scsi 0:0:0:49488: Well-known LUN    TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.565778] scsi 0:0:0:49456: Well-known LUN    TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.572829] scsi 0:0:0:49476: Well-known LUN    TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.581358] scsi 0:0:0:0: Direct-Access     TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.590301] scsi 0:0:0:1: Direct-Access     TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.596773] sd 0:0:0:0: [sda] 6335488 4096-byte logical blocks: (26.0 GB/24.2 GiB)
[    3.604485] sd 0:0:0:0: [sda] Write Protect is off
[    3.663635] sdhci: Secure Digital Host Controller Interface driver
[    3.663637] sdhci: Copyright(c) Pierre Ossman
[    3.664645] sdhci-pltfm: SDHCI platform and OF driver helper
[    3.665629] sdhci_msm 74a4900.sdhci: Got CD GPIO
[    3.729822] mmc0: SDHCI controller on 74a4900.sdhci [74a4900.sdhci] using ADMA 64-bit
[    3.877106] sd 0:0:0:0: [sda] Mode Sense: 00 32 00 10
[    3.877198] scsi 0:0:0:2: Direct-Access     TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.878645] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
[    3.880324] sd 0:0:0:1: [sdb] 1024 4096-byte logical blocks: (4.19 MB/4.00 MiB)
[    3.880569] sd 0:0:0:1: [sdb] Write Protect is off
[    3.880586] sd 0:0:0:1: [sdb] Mode Sense: 00 32 00 10
[    3.881032] sd 0:0:0:1: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA
[    3.889225]  sda: sda1
[    3.896830]  sdb: sdb1
[    3.897575] sd 0:0:0:0: [sda] Attached SCSI disk
[    3.899846] sd 0:0:0:1: [sdb] Attached SCSI disk
[    3.934416] scsi 0:0:0:3: Direct-Access     TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.934911] sd 0:0:0:2: [sdc] 1024 4096-byte logical blocks: (4.19 MB/4.00 MiB)
[    3.935125] sd 0:0:0:2: [sdc] Write Protect is off
[    3.935128] sd 0:0:0:2: [sdc] Mode Sense: 00 32 00 10
[    3.935445] sd 0:0:0:2: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA
[    3.937668] scsi 0:0:0:4: Direct-Access     TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.942268] sd 0:0:0:3: [sdd] 32768 4096-byte logical blocks: (134 MB/128 MiB)
[    3.943770] sd 0:0:0:3: [sdd] Write Protect is off
[    3.943781] sd 0:0:0:3: [sdd] Mode Sense: 00 32 00 10
[    3.944890]  sdc: sdc1
[    3.945166] sd 0:0:0:3: [sdd] Write cache: enabled, read cache: enabled, supports DPO and FUA
[    3.947610] scsi 0:0:0:5: Direct-Access     TOSHIBA  THGBF7G8K4LBATRB 0300 PQ: 0 ANSI: 6
[    3.949307] sd 0:0:0:2: [sdc] Attached SCSI disk
[    3.950771] sd 0:0:0:5: [sdf] 393216 4096-byte logical blocks: (1.61 GB/1.50 GiB)
[    3.951027] sd 0:0:0:5: [sdf] Write Protect is off
[    3.951036] sd 0:0:0:5: [sdf] Mode Sense: 00 32 00 10
[    3.951455] sd 0:0:0:5: [sdf] Write cache: enabled, read cache: enabled, supports DPO and FUA
[    3.952237] sd 0:0:0:4: [sde] 1048576 4096-byte logical blocks: (4.29 GB/4.00 GiB)
[    3.952482] sd 0:0:0:4: [sde] Write Protect is off
[    3.952490] sd 0:0:0:4: [sde] Mode Sense: 00 32 00 10
[    3.953331] sd 0:0:0:4: [sde] Write cache: enabled, read cache: enabled, supports DPO and FUA
[    3.956797]  sdd: sdd1 sdd2 sdd3
[    3.956957]  sdf: sdf1 sdf2 sdf3 sdf4 sdf5 sdf6 sdf7 sdf8 sdf9
[    3.957453]  sde: sde1 sde2 sde3 sde4 sde5 sde6 sde7 sde8 sde9 sde10 sde11 sde12 sde13 sde14 sde15 sde16 sde17 sde18 sde19 sde20 sde21 sde22 sde23 sde24 sde25 sde26 sde27 sde28 sde29 sde30
[    3.960385] sd 0:0:0:3: [sdd] Attached SCSI disk
[    3.961175] sd 0:0:0:5: [sdf] Attached SCSI disk
[    3.963540] sd 0:0:0:4: [sde] Attached SCSI disk
[   12.053485] EXT4-fs (sda1): recovery complete
[   12.054087] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[   12.472097] EXT4-fs (sda1): re-mounted. Opts: data=ordered