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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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