Re: NetBSD AMDGPU Cezanne: Best Way?

[Andrius V <vezhlys%gmail.com@localhost>]

On Mon, Nov 9, 2026 at 8:33 PM wwr lowkstupidaf
<wwr.lowkstupidaf.2010%gmail.com@localhost> wrote:
>
> Okay, so some Exposition: I have a ThinkPad E14 Gen 4, and it uses an
> AMD Ryzen 5625U with integrated graphics (cezanne generation).
> However, netbsd doesn't appear to support or even have the pci id for
> cezanne cards in the driver.
>
> How do I go about implementation? Do I:
> A: Hack on the existing drm version to add basic cezanne support, or
> B: try my hand at porting a newer drm version to netbsd
>
> Help would be appreciated! Also, does the driver work with Renoir?
>
> - RWX, professional idiot at his wits end

Hi,

Even for supported cards current support is far from the ideal,
especially with hardware acceleration enabled.

That said, cezanne is vega GPU (Renoir), which seemingly has some
support in current driver, so it is plausible that basic support is
just adding your PCI IDs to amdgpu_drv.c.

Option B is quite a big undertaking. Not sure if somebody works on it
now, but it is in the plans.

Regards,
Andrius V