The minutes of the weekly call can be found at:
https://wiki.linaro.org/WorkingGroups/PowerManagement/Meetings/2010-08-18
Attendees:
Linaro: Amit Kucheria, Amit Arora, Yong Shen
ARM: Robin Randhawa
== Agenda ==
* Review action items from last meeting
* Blueprint status
* HW governers
* Powerdebug - Amit A and Yong to co-operate on the list of info we've noted
in the Master Task List against powerdebug
* hwmon not much used
* camera goes to v4l
* battery goes to supply class
* omap4 - temperature sensor exported to hwmon
* power supply class support to be added
== Action Items from this Meeting ==
* ACTION: Amit A to test on pm enabled OMAP3 board
* ACTION: Amit A to document details on power supply class (battery info) to
PowerTOP internal wiki page
* ACTION: Yong to look into getting powertop kernel patches applied to Linaro
kernel tree
* ACTION: Robin to send links to patches sent to linux-pm
* ACTION: Amit K to spend some time on usecase to reproduce ondemand governor
problems
* ACTION: Yong to look at common clock FW, find out if debug info being
exported (usage count, clk rate, dependencies)
== Action Items from Previous Meeting ==
* ACTIVE (Immediate):
* ACTION: Robin and Srinivas to target the ftrace patches for upstream.:
* Srinivas to clarify what tree/branch is being used for this work: DONE
* ARM to sit on patches, perhaps get TI to carry them.
* ACTION: Amit A to get review and then post powertop patches to powertop
list upstream: DONE
* New ACTION: Amit A to test on pm enabled OMAP3 board
* ACTION: Amit A to look at power supply framework
* New ACTION: Amit A to document details on power supply class (battery
info) to PowerTOP internal wiki page
* ACTION: Amit K to look at getting powertop kernel patches applied to Linaro
kernel tree: Carry forward
* New ACTION: Yong to look into this
* ACTION: Vishwa to send instrumentation patches to linaro-dev: DONE
* ACTION: Vishwa to send usecase to reproduce ondemand governor problems:
Tranferred to Amit K
* New ACTION: Robin to send link to some interesting patches from
linux-pm
* ACTION: Amit K to spend some time on usecase to reproduce ondemand governor
problems: Carry forward
* ACTIVE (Long Term) :
* ACTION: Srinivas to provide details of where he believes userspace - kernel
interaction is required. (low prio)
* ACTION: Bobby to check on multi-core boards availability (request open)
* ACTION: ARM to discuss giving out internal Eclipse based tool (similar to
powertop) (no ETA as of now)
* ACTION: Amit Kucheria and Vishwa to get inputs from community on the issues
related to CPUIDLE governor: POSTPONED until instrumentation work
* DORMANT :
* ACTION: ARM to share internal instrumentation flow (BAB: we might also
align with Linaro on workload discussions)
* Might take couple of months
* ACTION: Amit K to talk to jeremy about power domain framework: DONE
* Jeremy needs help, will revisit in a few weeks
== Minutes ==
* Vishwa and Srinivas on holidays
* Powerdebug:
* Start a wiki page to note findings (amit a)
* ACTION: Yong to look at common clock FW, find out if debug info being
exported (usage count, clk rate, dependencies)
* Add code to powerdebug to read this debug information
* Power management differentiation
* Discussion with Robin from ARM about common frameworks
* Robin not convinced about all the consolidation effort, since some of
it is seen as competetive differentiator
* Amit K believes Mechanism should be common amongst vendors so that can
use common tools and design patterns.
* Policies can be different to allow differentiation
* e.g. have a cpufreq and cpuidle driver allows all vendors to use
powertop tool. If current frameworks don't suit the needs, we can work with
upstream to extend them.
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