[PATCH v4 00/16] NVIDIA Tegra devfreq improvements and Tegra20/30 support

From: Dmitry Osipenko
Date: Wed May 01 2019 - 19:42:08 EST


v4: Addressed all review comments that were made by Chanwoo Choi to v3:

- changed the driver removal order to match the probe exactly
- added clarifying comment for 1/8 ratio to the Tegra20 driver

Chanwoo, please also note that the clk patch that should fix
compilation problem that was reported the kbuild-test-robot is already
applied and available in the recent linux-next.

v3: Addressed all review comments that were made by Chanwoo Choi to v2.

Patch "Synchronize IRQ after masking it in hardware" morphed into
"Properly disable interrupts", which disables interrupts more solidly.

Added new minor patch: "Rename tegra-devfreq.c to tegra30-devfreq.c".

Added missed error handlings for dev_pm_opp_add().

v2: The patchset was quite heavily reworked since v1, few patches we
dropped or squashed into the new ones and more patches we added.
In a result more bugs and potential problems are fixed now, driver's
code got more clean up.

The Tegra20 driver-addition patch is now a part of this series, it has
no changes since v1.

Dmitry Osipenko (16):
PM / devfreq: tegra: Fix kHz to Hz conversion
PM / devfreq: tegra: Replace readl-writel with relaxed versions
PM / devfreq: tegra: Replace write memory barrier with the read
PM / devfreq: tegra: Don't ignore clk errors
PM / devfreq: tegra: Don't set EMC clock rate to maximum on probe
PM / devfreq: tegra: Drop primary interrupt handler
PM / devfreq: tegra: Properly disable interrupts
PM / devfreq: tegra: Clean up driver's probe / remove
PM / devfreq: tegra: Avoid inconsistency of current frequency value
PM / devfreq: tegra: Mark ACTMON's governor as immutable
PM / devfreq: tegra: Move governor registration to driver's probe
PM / devfreq: tegra: Reconfigure hardware on governor's restart
PM / devfreq: tegra: Support Tegra30
PM / devfreq: tegra: Enable COMPILE_TEST for the driver
PM / devfreq: tegra: Rename tegra-devfreq.c to tegra30-devfreq.c
PM / devfreq: Introduce driver for NVIDIA Tegra20

drivers/devfreq/Kconfig | 15 +-
drivers/devfreq/Makefile | 3 +-
drivers/devfreq/tegra20-devfreq.c | 212 ++++++++++++
.../{tegra-devfreq.c => tegra30-devfreq.c} | 315 ++++++++----------
5 files changed, 379 insertions(+), 174 deletions(-)
create mode 100644 drivers/devfreq/tegra20-devfreq.c
rename drivers/devfreq/{tegra-devfreq.c => tegra30-devfreq.c} (81%)