On Sat, Sep 06, 2025 at 08:01:27PM -0500, Aaron Kling wrote:
[...]> I should note that I have only actively tested this on gm20b and
> gp10b. I am currently unable to get nouveau running on any gk20a
> device I own. I am trying to target consumer devices such as the
> shield tablet, which use the android bootloader. I can boot the kernel
> just fine and tegra-drm works as well, however when nouveau tries to
> probe, it hangs the first time it tries to access a register. I have
> not yet been able to figure out why.
These types of hangs typically indicate that the hardware is not powered
on, not clocked or in reset. It's odd that it would hang during register
access on gk20a because nothing significant has changed in any of the
related drivers, as far as I know.
One thing that you could try is passing the clk_ignore_unused and
pd_ignore_unused command-line parameters when booting the kernel. If it
works with those, try finding out which one of them is causing things to
break to narrow down what we need to fix.
Thierry
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