On Thu, Aug 1, 2024, at 20:23, Aaro Koskinen wrote:

On Thu, Aug 01, 2024 at 10:59:38AM +0200, Arnd Bergmann wrote:

quoted

Would the timing make any difference to you? I.e. does it help
to keep another year or two, or would dropping it in early 2025
be the same?

Early 2025 could come too soon, but anyway during 2025 sounds OK. Let's
see if anyone else has comments. At least one more LTS release where it
has been tested would be nice.

To be clear: with "early 2025" I meant after the next LTS release
(6.12 as it seems), but one LTS later (early 2026) is still a
good outlook.

quoted

Ok, noted. Since you are doing the testing, that at least means
we have a chance of cleaning up the code gradually towards using
DT. Dmitry has started a migration of platform_data towards
DT compatible device properties, which can be done gradually
for the 22 platform drivers you use. This unfortunately still
leaves the nonstandard dmaengine interface (for UDC), but we
can deal with that later.

I have some plans to work on that. There's a long-standing bug with 15xx
DMA, but I have gotten that working, just need send those fixes out. After
that the conversion to new dmaengine should be more straightforward,
as we have a working testable reference for both boards using the UDC.

Nice, that does give a realistic hope of eventually doing a full
DT conversion then. If we manage to do both the DMA engine and
the device properties work, I would hope that writing an equivalent
dts file gets fairly easy.

     Arnd