MSC SM2S-IMX8MINI 72 / 87
User Manual
Example:
Figure 7-17. Forced SPL boot from carrier SD card
7.3.1.2 TEST# = HIGH: Booting SPL/U-Boot from module eMMC flash
With TEST# line = HIGH (e.g. on MSC SM2-MB-EP1 Carrier Board: "Test Mode Select" DIP Switch = OFF), the iMX8MMini Boot ROM code uses the
module eMMC flash as primary and the carrier SD card as secondary (fallback) boot media. The fall back media is always selected, when booting
from primary media is not possible (empty, corrupted, etc.)
Figure 7-18. SPL boot selector on EP1 carrier board (S2801). eMMC flash boot mode (default).
Example:
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