drm/nouveau/bios: specify correct display fuse register for Ampere and Ada

Browse source

The NV_FUSE_STATUS_OPT_DISPLAY register is used to determine whether
the GPU has display hardware.  The current code that normally reads
this register is instead hard-coded to check for GA100 vs later GPUs.
Since this function is called only on pre-Hopper GPUs, and this
if-statement applies only to GA100 and later, the check works
because GA100 is the only non-display Ampere and Ada GPU.

However, there actually is a register that can be read, so we should
use it.

Fixes: a34632482f ("drm/nouveau/bios/ga10[024]: initial support")
Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patch.msgid.link/20260430223838.2530778-8-ttabi@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

...

This commit is contained in:

Timur Tabi 2026-04-30 17:38:35 -05:00 • committed by Danilo Krummrich

parent 16d4747cd1

commit c1cf2d5db8

1 changed files with 2 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowramin.c

View file