[PATCH V2 0/2] memory: tegra: Restore MC state on system resume

[Ashish Mhetre <amhetre@nvidia.com>]

The tegra-mc platform driver does not register any dev_pm_ops, so the
SoC-specific ->resume() is never invoked (e.g. tegra186_mc_resume) on
system wake. On Tegra186 and later this means MC client Stream-ID
override registers are not reprogrammed.

Register a dev_pm_ops on the tegra-mc driver and route the system
resume callback into mc->soc->ops->resume() so the existing SID
restore path runs again on wake.

The MC interrupt mask registers also lose state across SC7, so
re-apply them on resume. Factor the existing intmask programming
out of tegra_mc_probe() into tegra_mc_setup_intmask() and reuse it
from both probe and resume to avoid duplicating the loop.

No suspend callback is needed as the resume path reprograms all MC
state from the static SoC tables, so there is nothing to save.

Changes in V2:
- Split the original single patch into two - register the PM ops and
  reprogram the MC interrupt masks on resume.

Ashish Mhetre (2):
  memory: tegra: Wire up system sleep PM ops
  memory: tegra: Restore MC interrupt masks on resume

 drivers/memory/tegra/mc.c | 41 ++++++++++++++++++++++++++++++++-------
 1 file changed, 34 insertions(+), 7 deletions(-)

-- 
2.50.1