Mikko Perttunen 6a8e488b48 drm/tegra: virt: Add WAR for retrieving clock rate ...

Normal clock APIs are not necessarily accessible from guest,
so as a workaround, use the BPMP debugfs interface to determine
engine rate when calculating usage.

Bug 4090576

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Change-Id: Ibbffb5700162aec18317c43e9b7e03e3b8227be2
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2988957
(cherry picked from commit c8dc95c94b6c1077a6ff3e51cacef4913387828f)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2991018
Reviewed-by: Johnny Liu <johnliu@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

2023-11-15 04:12:11 -08:00

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