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| author | Alex Frid <afrid@nvidia.com> | 2018-05-08 21:58:22 -0400 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2018-05-11 18:34:37 -0400 |
| commit | 7a28547892bfa73d31c1423b33e98030840a4f6d (patch) | |
| tree | 0c9f8c8dac79434d653a68ca933d2b3df750a779 /drivers/gpu/nvgpu/common/nvlink.c | |
| parent | 0732f4b83ee8f055155f25c876c870ff7d20ae99 (diff) | |
gpu: nvgpu: Fix Gpu sysfs access to Fmax@Vmin
Currently gpu sysfs retrieves Fmax@Vmin by direct call into Tegra DVFS
driver that introduces compile time dependencies on CONFIG_TEGRA_DVFS.
In addition incorrect clock is used for DVFS information access.
Re-factored sysfs node to use generic GPU clock operation for Fmax@Vmin
read. This would fix a bug in target clock selection, and allows to
remove dependency of sysfs on CONFIG_TEGRA_DVFS.
Updated nvgpu_linux_get_fmax_at_vmin_safe operation itself so it can be
called on platforms that does not support Tegra DVFS, although 0 will
still be returned as Fmax@Vmin on such platforms.
Bug 2045903
Change-Id: I32cce25320df026288c82458c913b0cde9ad4f72
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1710924
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/common/nvlink.c')
0 files changed, 0 insertions, 0 deletions