i.MX8MQ boot configuration

[bastiann]

I am currently updating an existing i.MX7 design to i.MX8M.

The i.MX7 uses QSPI as boot device.

I used MCIMX8M-EVK schematics as reference and found the BOOT_CFG configuration for boot using SD, eMMC, NAND,QSPI and SPINOR. In the reference manual I only find BOOT_CFG for SD/MMC and NAND boot.

Is there no more support for other boot sources than NAND, SD and MMC?

[mitchellchen]

who can you share how to repeat configure step ? Thank you

[Yuri]

Hello,

  yes, i.MX 8M supports only NAND, SD \ [e]MMC as boot options.

Have a great day,

Yuri

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[gary_bisson]

Hi YuriMuhin_ng‌,

Then why does the TRM says:

1.6 Primary Boot Options

The i.MX 8M Dual/8M QuadLite/8M Quad supports the following boot devices:

• NAND FLASH (including SLC and MLC)
• SDIO / MMC / SDXC
• eSD 3.0/eMMC 5.0 (fast boot)
• SPI (serial FLASH)
• USB
• QSPI
• Ethernet (via plug-in mode)

Also in the 6.2.1 Boot Fusemap clearly states SPI NOR as well as QSPI (BOOT_CFG[14]).

Isn't it only the Internal Boot that is limited to NAND and SD/eMMC? Then using Boot from Fuses allows for more options?

Regards,

Gary

[Yuri]

Hello,

 the information of the section 1.6 seem copied from other i.MX devices,

and should be considered as misprints (already reported to the doc team).

Regards,

Yuri.

[gary_bisson]

Hi Yuri,

Thanks for the clarification. What about the section 6.2.1 Boot Fusemap, is it also a bad copy/paste?

What about Table 6-19 which also mentions SPI NOR?

Thanks,

Gary

[Yuri]

Hello,

 I am afraid, You are right - some boot fuse details contains typo.

Regards,

Yuri.