Supported Boot Modes¶
The MitySOM-iMX6 supports booting from a number of different peripheral devices, both on and off the SoM. The specific boot device selected/used by the iMX6 processor is controlled by 3 Boot config pins that are exposed at the SMARC connector. Documentation is also included in the MitySOM-iMX6 datasheet in section 4.3.1.
MitySOM-iMX6 SMARC Pins:- P123 - BOOT_SEL0#
- P124 - BOOT_SEL1#
- P125 - BOOT_SEL2#
MitySOM-iMX6 Boot Modes:
| Binary | BOOT_SEL2# | BOOT_SEL1# | BOOT_SEL0# | SMARC Boot Source | iMX6 Peripheral | Note |
| '000' | GND | GND | GND | Carrier SATA | SATA | |
| '001' | GND | GND | Float/1.8V | Carrier SD Card | uSDHC1 | |
| '010' | GND | Float/1.8V | GND | Carrier eMMC | uSDHC3 | Only available w/o SoM eMMC |
| '011' | GND | Float/1.8V | Float/1.8V | Carrier SPI | eCSPI3 CS1 | |
| '100' | Float/1.8V | GND | GND | Module Device | Serial downloader USB-OTG | |
| '101' | Float/1.8V | GND | Float/1.8V | Module | Remote Boot | |
| '110' | Float/1.8V | Float/1.8V | GND | Module eMMC | uSDHC3 | |
| '111' | Float/1.8V | Float/1.8V | Float/1.8V | Module SPI NOR | eCSPI3 CS0 | Booting from SPI NOR Flash |
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