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| History | |||
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| Issue Date | Notes | ||
| 2023/08/30 | First release | ||
Contents
Boot ConfigurationsEdit
ETRA Evaluation Board is built upon STM32MP1 processor.
The following sections detail boot configuration options, which differ depending on the SoM.
Available optionsEdit
Boot modes can be selected by S1 DIP-switch which acts directly on BOOT_MODE[2..0] configuration pins.
S1 switches are connected to ETRA BOOT_MODE[2:0] pins allowing different boot modes.
where S1 switches are mapped as the following table:
| BOOT_MODE | S1 | Note |
|---|---|---|
| BOOT_MODE0 | S1.1 | |
| BOOT_MODE1 | S1.2 | |
| BOOT_MODE2 | S1.3 | |
| - | S1.4 | USB OTG settings |
DIP settingsEdit
| BOOT_MODE[2:0] | S1[3..1] | Boot peripheral | Notes |
|---|---|---|---|
| 000 | OFF-OFF-OFF | USB | boot from USB OTG |
| 001 | OFF-OFF-ON | NOR | boot from NOR flash on Quad-SPI |
| 010 | OFF-ON-OFF | eMMC | boot from eMMC on SDMMC2 |
| 101 | ON-OFF-ON | SD | Default boot from SD card on SDMMC1 |
| 111 | ON-ON-ON | NAND | boot from NAND flash on Quad-SPI |