Is it possible to enable the Deep Sleep Mode in the IMX8M_EVK from under the bootloader?

[sergeyan]

Hi!

Is it possible to enable the Deep Sleep Mode in the IMX8M_EVK from under the bootloader, using the commands mw\md in accordance with the reference manual for IMX8M?

I am using Example 3 (page 676 of i.MX 8M Dual/8M QuadLite/8M Quad Applications Processors Reference Manual Rev.3).

By the way, there are typos in the examples (wrong addresses)..

Thank you!

[igorpadykov]

Hi Sergey

ussually bootloaders do not support interrupts, so seems not possible to wake processor.

For examples one can look at sect.2.5 Power Management   i.MX Linux Reference Manual​

Best regards
igor

[sergeyan]

Hi Igor

My task is to estimate the minimum CPU heat dissipation while keeping Linux running (1 core, minimum frequency, minimum interfaces). For reference - work in the bootloader (without Linux) - 45 degrees with a radiator.

I tried to reproduce example 3 with the mw commands, but did not get any response - either the example is designed to be used from under Linux, or there are errors in the example.

Best regards
Sergey