gpu: nvgpu: fix reset clock in gm20b

To assert reset on GPU, we store "gpu_ref" clock in
platform->clk[0] and use it to assert/deassert reset

But for gm20b, "gpu_ref" is no longer resettable.

To fix this, add two callbacks in gk20a_platform :
.reset_assert and .reset_deassert
Also, add a pointer "clk_reset" to store the clock
which needs to be reset

For gk20a specific implementation, we continue to
reset platform->clk[0]

For gm20b specific implementation, we first request
"gpu_gate" clock, store it and use it to assert reset

Bug 1513685
Bug 1517584

Change-Id: I15a583a4a07eb663b442084be8b8c7d0c7c7a142
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>

0 files changed, 0 insertions, 0 deletions