[REGRESSION] Verdin AM62/62P not booting with 42b3ee7fa524

[Francesco Dolcini]

Hello Suhaas, Bryan, all

On Wed, Feb 11, 2026 at 04:51:09PM +0530, Suhaas Joshi wrote:
> On 11:11-20260211, Francesco Dolcini wrote:
> > On Tue, Feb 10, 2026 at 11:50:14AM +0100, Francesco Dolcini wrote:
> > > On Mon, Feb 09, 2026 at 02:20:01PM -0600, Bryan Brattlof wrote:
> > > > Do you mind copying a boot log to a pastebin for me? I thought I had one 
> > > > of these boards but I'm still digging around for it. 0x80000000 should 
> > > > be where we load TFA now days unless some boards have opted out of 
> > > > letting U-Boot move it to the bottom of DRAM
> > > 
> > > Here some more logs
> > > 
> > > https://gist.github.com/dolcini/aa4b669c6349cc6da1b9e7b19cf53fed
> > > 
> > > The files are named with the commit sha that is tested.
> > > 
> > > On Tue, Feb 10, 2026 at 02:56:46PM +0530, Suhaas Joshi wrote:
> > > > Verdin boards are the only ones that are reporting this issue. Is it
> > > > alright if we revert only the two Verdin-specific commits, and let the
> > > > rest (TI and PhyCore ones) stay as they are? The patches are pretty
> > > > un-connected to each other.
> > > 
> > > Verdin AM62 should not have anything special, the code is all there for
> > > everyone to see, including the defconfig, the DT and so on, and the changes
> > > we are talking about to me are self contained withing the SoC. Something
> > > is wrong, and we are not understanding what yet.
> > > 
> > > I just retested once more 42b3ee7fa524 and it just hung, you never know
> > > if I did something wrong. And for what matter this was spotted by our
> > > CI.
> > > 
> > > > We are working on figuring out why Verdin is seeing these issues, in the
> > > > meantime.
> > > 
> > > Anything I can do let me know.
> > > 
> > > If it matter the board that I am currently testing has 1GiB DDR RAM, and
> > > the SoC is a AM6252ATCGHAALW. 
> > 
> > I was able to trace the issue to the get_ram_size() in
> > verdin-am62.c:dram_init().
> > 
> > That function walks the addressable memory range to dynamically detect
> > how much memory is available.
> > 
> > Not sure on the proper way to fix it however, Bryan? Suhaas?
> 
> Yes, this does seem to be the issue, even in my digging. I have sent a
> patch to fix this. But since I don't have boards, I have not tested
> this. Could you please test this and let us know if it works, or if
> there are any other issues that pop up?

With commit f9ffeec4bdcf ("board: toradex: Make A53 get RAM size from DT
in K3 boards") merged we had our CI running on our whole board farm
last night.

Good news: the issue is confirmed to be fixed on Verdin AM62P and Verdin
AM62 [Quad|Dual] with [1|2]GB RAM.

Bad news: we we do still have a boot failure regression on Verdin AM62
single core with 512MB RAM. I have no idea if this is the same issue or
a different one, but from the logs it look different (despite that I
decided to keep using this email thread and not start a new one).

The failing board from the logs uses a AM6231ASGGHAALW SoC, maximum
frequency 1GHz, we also have another device failing, single core again,
with maximum frequency 800MHz, the working one have 1.4GHz max
frequency.

Worth noticing the errors
  Failed to set clock rates

These are new compared to the previous U-Boot release, it affects also
other boards, and I have no idea if this is related to this issue or not.

Logs of the failing device (U-Boot is commit f9ffeec4bdcf1da655a0ffea482062adde78fee8)

U-Boot SPL 2026.04-rc2-0.0.0-devel+git.f9ffeec4bdcf (Feb 12 2026 - 14:12:09 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.2.9--v11.02.09 (Fancy Rat)')
Failed to set clock rates for '/a53 at 0': -22
SPL initial stack usage: 13456 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Loading Environment from nowhere... OK
init_env from device 9 not supported!
Warning: Did not detect image signing certificate. Skipping authentication to prevent boot failure. This will fail on Security Enforcing(HS-SE) devices


Logs of the booting device

U-Boot SPL 2026.04-rc2-0.0.0-devel+git.f9ffeec4bdcf (Feb 12 2026 - 14:12:09 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.2.9--v11.02.09 (Fancy Rat)')
Failed to set clock rates for '/a53 at 0': -22
SPL initial stack usage: 13456 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Loading Environment from nowhere... OK
init_env from device 9 not supported!
Authentication passed
Authentication passed
Starting ATF on ARM64 core...
NOTICE:  BL31: v2.13.0(release):v2.13.0-259-ge0c4d3903b-dirty
NOTICE:  BL31: Built : 07:01:36, Jul  1 2025
U-Boot SPL 2026.04-rc2-0.0.0-devel+git.f9ffeec4bdcf (Feb 12 2026 - 14:12:09 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.2.9--v11.02.09 (Fancy Rat)')
SPL initial stack usage: 2048 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
U-Boot 2026.04-rc2-0.0.0-devel+git.f9ffeec4bdcf (Feb 12 2026 - 14:12:09 +0000)
SoC:   AM62X SR1.0 HS-FS
Reset reason: POR
DRAM:  1 GiB
optee optee: OP-TEE: revision 4.7 (a9690ae39995af36)
Core:  160 devices, 35 uclasses, devicetree: separate
MMC:   mmc at fa10000: 0, mmc at fa00000: 1
Loading Environment from MMC... Reading from MMC(0)... OK
In:    serial at 2800000
Out:   serial at 2800000
Err:   serial at 2800000
Model: Toradex 0073 Verdin AM62 Dual 1GB ET V1.2A
Serial#: 15412849
Carrier: Toradex Dahlia V1.1D, Serial# 11287113


Unfortunately I do not have a single core board to test readily
available now, and I will be out of office a couple of days, but
I decided to share this immediately so that we can try to understand
what's going on. Middle of next week I should be able to do more tests.

Thanks for the support,
Francesco