[PATCH 2/3] k3-am62-pocketbeagle2: add initial board support

[Robert Nelson]

On Fri, Mar 27, 2026 at 9:25 AM Marko Mäkelä <marko.makela at iki.fi> wrote:
>
> Thu, Mar 26, 2026 at 06:23:20PM -0500, Randolph Sapp wrote:
> [snip]
> >Alright, looking into the allocation helpers it seems that
> >EFI_CONVENTIONAL_MEMORY can be remapped in efi_allocate_pages so long as LMB
> >agrees that it's free. This aligns with my understanding of the UEFI spec as
> >well. I dumped the EFI memory map and noticed there were 2 fragmented sections
> >of EFI_CONVENTIONAL_MEMORY that it could still use.
> >
> >Wired up efi_allocate_pages to go to those regions and attempt to allocate from
> >there in the even an LMB_MEM_ALLOC_MAX or LMB_MEM_ALLOC_ANY start failing. Seems
> >to have worked, but now I'm seeing the following reported in the kernel:
> [snip]
>
> I can't help with that, but I hope that someone can. Because I intend to
> work on improvements related to secure boot and FIT verification, having
> this board working in the current u-boot would be really great. I'm
> looking forward to test a revised patch set.
>
> Coincidentally, I just got a PocketBeagle 2 yesterday. It took a while
> for me to find some useful u-boot source code. I came across
> https://github.com/beagleboard/u-boot/commit/64be5e474943dc5c6e6e01edc124ff6f53f616a4
> which is a few changes ahead of u-boot:
>
> 64be5e47494 arm: dts: k3-am62-r5-pocketbeagle2: remove chosen uart override
> e1207aad9b0 arm: dts: k3-am62-pocketbeagle2: add boot phase flag to uart6
> 23f9fc5d6da arm: mach-k3: am62: add &main_uart6 to clock and pwr tree
> 156a9bb1410 add: k3-am62-pocketbeagle2
>
> On a merge to the current u-boot master, I discarded a change to
> k3_get_a53_max_frequency(void) by 156a9bb1410 because that function has
> been replaced with am62p_map[]. In that array, the clock rates for the
> speed grades S,T,U,V would conflict with patch. I don't expect this to
> be essential, but I thought that I would mention it because there were
> no adjustments to the speed grade in this patch set.

Marko, here's my last wip, before Randolph submitted:
https://github.com/beagleboard/u-boot/tree/v2026.01-am62-pocketbeagle2

v2026.04-rc* has had more TI changes for low-memory (512MB) devices
hitting mainline so things have changed again to work around k3
stuff..

Regards,

-- 
Robert Nelson
https://rcn-ee.com/