Mity CPU Platforms » MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P

02/25/2026

05:05 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

Great glad it worked. Hopefully the dtc command examples will be helpful for you and others as well Jonathan Cormier

04:59 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

I md5sum'ed the SD dtb and the emmc dtb, they were in-fact different. I re-copied the files and now it is working. I ... Ben H

04:24 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

It would also be a good idea to md5sum the emmc and sdcard versions of the tfc dtb to make sure they are infact ident... Jonathan Cormier

04:23 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

Thanks Ben, I hadn't realized that.
Lets make sure the tfc device tree file contains what you expect it to.
Do ... Jonathan Cormier

03:35 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

can you also post the dtb file? Michael Williamson

03:21 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

Sorry, I just posted the u-boot log, it does indeed boot. Per the u-boot log it claims to load my dtb but the differe... Ben H

02:43 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

> Some progress made, it now finds the file but still does not load it.
It looks like it did load it from the eMMC s... Jonathan Cormier

02/24/2026

11:06 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

Hi Jonathan,
Some progress made, it now finds the file but still does not load it.
Here are the dtbs (the "-t... Ben H

10:47 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

Yeah please share the console log during the boot attempt.
To get a bit more debug info, enable xtrace in u-boot... Jonathan Cormier

10:38 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

Hi Jonathan,
Thanks for your reply. Unfortunately, that did not solve the problem. The system fails to find the fi... Ben H

09:26 PM Software Development: RE: AM62A eMMC Boot - Kernel Device Tree

Hi Ben,
The device tree file that gets loaded is set in the fdtfile variable. You should be able to update it to ... Jonathan Cormier

08:52 PM Software Development: AM62A eMMC Boot - Kernel Device Tree

I’m working with the AM62A SoM and a Yocto development environment, switching between the CL devkit and custom hardwa... Ben H

02/23/2026

04:01 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Glad it worked. Thanks for closing the loop Jonathan Cormier

10:44 AM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Just a quick note to say thanks to everyone for solving this issue this quickly
We have fitted the pullups to our ... Paul Strutt

02/20/2026

09:40 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

We will review and fix our datasheets to make mention of this as well. Jonathan Cormier

09:39 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Hi Paul,
After reviewing and trying a few things, we noticed that these pins are labelled differently in the "TI d... Jonathan Cormier

03:52 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Good morning Paul,
Thank you for the information. We were able to see the same behavior on our end. Tying 3.3 V to... Jake Pregitzer

09:18 AM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Thanks for all the updates.
It sounds like you can at least reproduce the problem which is a start
Just to answ... Paul Strutt

02/19/2026

08:15 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Hello Paul,
We have replicated this issue on our end. I am using a 62x with our latest SDK (11.01) and found that ... Jake Pregitzer

07:36 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Also are you testing this on our devkit or on a custom design? If a custom design, would you be willing to email it ... Jonathan Cormier

07:19 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Hi Paul,
To confirm, you are using a standard AM62x SOM, correct (not an AM62Ax or AM62Px)?
Thanks,
Mike
Michael Williamson

04:19 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Thanks Mike
I think I have set up the GPIO lines correctly. I followed the steps described in the following wiki
... Paul Strutt

12:59 PM Software Development: RE: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

Hi Paul,
By default, the MCU_GPIO peripheral is controlled in the linux kernel for the devkit. (see the arch/arm6... Michael Williamson

11:41 AM Software Development: Problems writing to MCU_GPIO0_19 and MCU_GPIO0_20

I have created an MCU application that uses the MCSPI to communicate with multiple SPI devices.
We need to talk to u... Paul Strutt