drm/nouveau/tegra: Don't leave GPU in reset

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

On Tegra186 systems with certain firmware revisions, leaving the GPU in
reset can cause a hang. To prevent this, don't leave the GPU in reset.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

authored by

Mikko Perttunen and committed by

Ben Skeggs 8 years ago fcd504e3 b1df2425

-3

1 changed file

expand all

drivers

gpu

drm

nouveau

nvkm

engine

device

tegra.c

-3

drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c

··· 82 82 { 83 83 int ret; 84 84 85 - reset_control_assert(tdev->rst); 86 - udelay(10); 87 - 88 85 clk_disable_unprepare(tdev->clk_pwr); 89 86 if (tdev->clk_ref) 90 87 clk_disable_unprepare(tdev->clk_ref);