This patch series adds support for CPR on MSM8916. It depends on
a few different patch series to be fully functional. It needs SPMI
regulator support[1] and secondly it needs the NVMEM framework[2].
It also needs a patch that provides a "corner" voting mechanism to the
SMD RPM regulators (and it relies on the SMD RPM regulators to function
properly). If possible I would like to get rid of that patch entirely.
Finally it needs CPU clock support to support scaling CPU frequencies.
Once you have those 4 or 5 patch series in place you can apply these
patches and enable cpufreq-dt and add the cpufreq-dt device (maybe the
CPR driver should add the cpufreq-dt device?) and you'll see interrupts
for CPR and OPP voltage adjustments triggering CPUfreq to modify voltages.
Stephen Boyd (6):
regulator: core: Don't spew backtraces on duplicate sysfs
regulator: core: Print at debug level on debugfs creation failure
PM / OPP: Support adjusting OPP voltages at runtime
OPP: Allow notifiers to call dev_pm_opp_get_{voltage,freq} RCU-free
cpufreq-dt: Handle OPP voltage adjust events
power: avs: Add support for CPR (Core Power Reduction)
drivers/base/power/opp.c | 96 +-
drivers/cpufreq/cpufreq-dt.c | 73 +-
drivers/power/avs/Kconfig | 14 +
drivers/power/avs/Makefile | 1 +
drivers/power/avs/qcom-cpr.c | 1983 ++++++++++++++++++++++++++++++++++++++++++
drivers/regulator/core.c | 6 +-
include/linux/pm_opp.h | 10 +
7 files changed, 2166 insertions(+), 17 deletions(-)
create mode 100644 drivers/power/avs/qcom-cpr.c
[1] http://lkml.kernel.org/r/1431466787-32247-1-git-send-email-sboyd@xxxxxxxxxxxxxx
[2] http://lkml.kernel.org/r/1432226535-8640-1-git-send-email-srinivas.kandagatla@xxxxxxxxxx
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