[resolute] Revert "arm64: dts: qcom: sc8280xp: Enable GPI DMA"

[Tobias Heider]

On Wed, Mar 25, 2026 at 3:47 PM Tobias Heider
<tobias.heider at canonical.com> wrote:
>
> BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2142403
>
> [Impact]
> The offending commit breaks the live ISO on all sc8280xp devices.
> We see a hang early on the in initrd followed by:
> gpi 800000.dma-controller: Error with cmd: CH START completion timeout
> gpi 800000.dma-controller: Error with cmd: DE ALLOC ret:-5
>
> We have confirmed this affects at least the Thinkpad X13s and Microsoft
> Windows Dev Kit 2023.
>
> [Fix]
> For now the preferred fix would be to revert commit
> 013d01811a1ea4ce0f676e4110f94c80271586b9
> which added the problematic nodes to the device trees of the affected devices.
> I have produced a test iso on Launchpad with this commit reverted and
> verified that solves
> the problem for now available at
> https://launchpad.net/~tobhe/+livefs/ubuntu/resolute/x1e-resolute/+build/931955
>
> In the long term we might have to explore other solutions such as
> changing the list of modules included
> in the initrd, but the revert buys us time to consult with upstream.

should be resolute of course