admin@gentoo ~ $ cat /mnt/sd/etc/fstab.broken
/dev/mmcblk0p1          /boot           vfat            noatime  1 2
/dev/mmcblk0p2          /               ext4            noatime         0 1
admin@gentoo ~ $

### boot hangs here using the fstab above. noatime seems to be the issue.

[    2.345184] Run /init as init process
[    2.393981] mmc1: new high speed SDIO card at address 0001
[    2.412653] Alpine Init 3.5.0-r0
[    2.418032] Loading boot drivers...
[    2.435836] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    2.443121] Loading boot drivers: ok.
[    2.450857] Mounting root...
[    3.133575] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    3.142736] Mounting root: ok.