Messages in this thread | | | From | Lukasz Luba <> | Subject | [PATCH v4 0/4] Introduce "opp-microwatt" and Energy Model from DT | Date | Tue, 1 Mar 2022 09:35:20 +0000 |
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Hi all,
This patch set solves a few issues: 1. It allows to register EM from DT, when the voltage information is not available. (Some background of the issues present on Chromebook devices can be checked at [1].) 2. It allows to register 'advanced' EM from the DT, which is more accurate and reflects total power (dynamic + static).
Implementation details: Existing machinery in the OPP framework now handles "opp-microwatt", similarly to "opp-microamp". It also has helper exported function to get power from OPP. For the EM, it adds a new callback in OPP framework to use this new API and read power while having an opp pointer. It's agreed to work with OPP-v2.
Comments, suggestions are very welcome.
changelog: v4: - changed calculation of power, summing add all supliers power for an opp - added opp debugfs for u_watt - added patternProperties in dt-bindings for this new opp-microwatt - changed the EM opp registration flow and used one EM api registration call - changed name of _get_opp_power() to _get_dt_power() - removed 'advanced' word from the new paragraph and content in EM doc changes v3 [2]
Regards, Lukasz Luba
[1] https://lore.kernel.org/linux-pm/20220207073036.14901-2-lukasz.luba@arm.com/ [2] https://lore.kernel.org/linux-pm/20220224081131.27282-1-lukasz.luba@arm.com/
Lukasz Luba (4): dt-bindings: opp: Add "opp-microwatt" entry in the OPP OPP: Add "opp-microwatt" supporting code OPP: Add support of "opp-microwatt" for advanced EM registration Documentation: EM: Describe new registration method using DT
.../devicetree/bindings/opp/opp-v2-base.yaml | 23 ++++ Documentation/power/energy-model.rst | 10 ++ drivers/opp/core.c | 25 +++++ drivers/opp/debugfs.c | 3 + drivers/opp/of.c | 104 +++++++++++++++++- include/linux/pm_opp.h | 12 +- 6 files changed, 174 insertions(+), 3 deletions(-)
-- 2.17.1
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