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- What I did

Disable U-Boot interrupt timeout for Raspberry Pi 5 to avoid boot issues without a connected debug UART. This is a known U-Boot issue discussed in:
https://bugzilla.opensuse.org/show_bug.cgi?id=1251192
https://lists.denx.de/pipermail/u-boot/2025-January/576305.html

The issue affects Raspberry Pi 5 with U-Boot version 2025.04 from branch scarthgap/u-boot of layer meta-lts-mixins.

- How I did it

By configuring U-Boot with CONFIG_BOOTDELAY=-2 as discussed in the U-Boot mailing list.

Disable U-Boot interrupt timeout for Raspberry Pi 5 to avoid boot
issues without a connected debug UART. This is a known U-Boot issue
discussed in:
https://bugzilla.opensuse.org/show_bug.cgi?id=1251192
https://lists.denx.de/pipermail/u-boot/2025-January/576305.html

The issue affects Raspberry Pi 5 with U-Boot version 2025.04 from
branch scarthgap/u-boot of layer meta-lts-mixins.

This work was sponsored by GOVCERT.LU.

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
@leon-anavi leon-anavi changed the title u-boot: Disable interrupt timeout for Raspberry Pi 5 [Scarthgap] u-boot: Disable interrupt timeout for Raspberry Pi 5 Dec 18, 2025
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@agherzan agherzan left a comment

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Looks good! Thanks for the workaround.

@agherzan agherzan enabled auto-merge (rebase) December 18, 2025 11:33
@agherzan agherzan merged commit fb6028e into agherzan:scarthgap Dec 19, 2025
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2 participants