[PATCH 0/3] Synchronize DTC to 1.7.2

Marek Vasut marek.vasut at mailbox.org
Sun Nov 16 00:23:30 CET 2025


On 11/13/25 7:49 PM, Tom Rini wrote:

Hello Tom,

>> CI does show that no boards went oversize . If there is some growth on
>> existing devices, maybe we can shrink that, but maintaining obsolete DTC
>> code base going forward and picking random updates into it, that will only
>> lead to increasing maintenance pain, so I don't want to do that.
> 
> Yeah, it's not an easy spot. But I'm really not happy with growing main
> U-Boot almost everywhere by 2KiB - 4KiB, and SPL by ~512 bytes or more
> just to keep up. I do see that integratorcp_cm1136 barely grows at all,
> so maybe there's something that can be done more widely and just wasn't
> clear at first. m68k only grows an average of 500 bytes and MIPS is
> ~1KiB. PowerPC grows a lot. RISC-V a little.
I suspect this might have to do with DTO support. The imx8mp_dhcom do 
use DTOs and the fdt_overlay.c code grew a lot.

I also found out that if I patch out can_assume() and replace it with 
plain 1 , then the size drops by 1-2 kiB, but that's probably not what 
we want to do.


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