Re: [PATCH v7 00/10] Add power domain driver for corners on msm8996/sdm845

[Rajendra Nayak <rnayak@codeaurora.org>]

> Changes in v7:
> * Rebased on Andy's for-next, and used the updated cmd_db_read_aux_data()
[]..

Hey Andy, just wanted to let you know that this series (v7) is now
well reviewed/ack'ed and ready to land (except for the last 3 patches)
Patch 08/10 will need to go via Ulf/Rafael and Patch 09/10 depends on it
for compilation, also Patch 10/10 has other dependencies which need to
land via the power tree.

So Patch 01/10 to 07/10 from this series are good to be pulled in,
whenever you think is the right time, I am guessing its probably
too late for 4.21?

Thanks,
Rajendra

> 
> Changes in v6:
> * OPP binding updates for qcom,level reviewed by Rob
> * DT bindings for rpmpd and rpmhpd updated to specify the
> OPP tables as child nodes of the power-controller itself
> * Removed some module specific remains from the drivers,
> now that they can only be built-in
> * Added a simple_opp_to_performance_state() helper
> 
> Changes in v5:
> * First 6 patches are unchanged
> * Patch 7/8 adds the DT node for rpmh power-controller on sdm845 and the
> corresponding OPP tables for it to describe the performance states
> * Patch 8/8 adds a parent/child relationship across mx/cx and mx_ao/cx_ao
> as needed on sdm845 platform. This patch is dependent on the series from
> Viresh [1] which adds support to propogate performance states across the
> power domain hierarchy which is still being reviewed
> 
> Changes in v4:
> * Included the patch to add qcom-opp bindings (dropped accidentally in v3)
> * merged the patches to add bindings for rpm and rpmh, added consumer binding example
> * Made the drivers built in, removed .remove
> * Added better description in changelog for PATCH 6/6
> * Updated rpmhpd_aggregate_corner() based on Davids feedback
> * rpmhpd_set_performance_state() returns max corner, in cases where its called
> with an INT_MAX
> * Dropped the patch to max vote on all corners at init, the patch did not
> work anyway, and it shouldn't be needed now
> 
> Changes in v3:
> * Bindings split into seperate patches
> * Bindings updated to remove duplicate OPP table phandles
> * DT headers defining macros for Power domain indexes and OPP levels
> * Optimisations to use rpmh_write_async() whereever applicable
> * Fixed up handling of ACTIVE_ONLY/WAKE_ONLY/SLEEP voting for RPMh
> * Fixed the vlvl to hlvl conversions in set_performance
> * Other minor fixes based on review of v2
> * TODO: This series does not handle the case where all VDD_MX votes
> should be higher than VDD_CX from APPs, as pointed out
> by David Collins in v2. This needs support at genpd to propogate performance
> state up the parents, if we model these as Parent/Child to handle the
> interdependency.
> 
> Changes in v2:
> * added a power domain driver for sdm845 which supports communicating to RPMh
> * dropped the changes to sdhc driver to move over to using OPP
> as there is active discussion on using OPP as the interface vs
> handling all of it in clock drivers
> * Other minor binding updates based on review of v1
> 
> With performance state support for genpd/OPP merged, this is an effort
> to model a power domain driver to communicate corner/level
> values for qualcomm platforms to RPM (Remote Power Manager) and RPMh.
> 
> [1] https://lkml.org/lkml/2018/11/26/333
> 
> Rajendra Nayak (10):
>    dt-bindings: opp: Introduce qcom-opp bindings
>    dt-bindings: power: Add qcom rpm power domain driver bindings
>    soc: qcom: rpmpd: Add a Power domain driver to model corners
>    soc: qcom: rpmpd: Add support for get/set performance state
>    arm64: dts: msm8996: Add rpmpd device node
>    soc: qcom: rpmhpd: Add RPMh power domain driver
>    arm64: dts: sdm845: Add rpmh powercontroller node
>    PM / Domains: Add a simple_opp_to_performance_state() helper
>    soc: qcom: rpmpd: Use simple_opp_to_performance_state() helper
>    soc: qcom: rpmhpd: Mark mx as a parent for cx
> 
>   .../devicetree/bindings/opp/qcom-opp.txt      |  25 ++
>   .../devicetree/bindings/power/qcom,rpmpd.txt  | 146 +++++++
>   arch/arm64/boot/dts/qcom/msm8996.dtsi         |  34 ++
>   arch/arm64/boot/dts/qcom/sdm845.dtsi          |  51 +++
>   drivers/base/power/domain.c                   |  17 +
>   drivers/soc/qcom/Kconfig                      |  18 +
>   drivers/soc/qcom/Makefile                     |   2 +
>   drivers/soc/qcom/rpmhpd.c                     | 402 ++++++++++++++++++
>   drivers/soc/qcom/rpmpd.c                      | 317 ++++++++++++++
>   include/dt-bindings/power/qcom-rpmpd.h        |  39 ++
>   include/linux/pm_domain.h                     |   9 +
>   11 files changed, 1060 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/opp/qcom-opp.txt
>   create mode 100644 Documentation/devicetree/bindings/power/qcom,rpmpd.txt
>   create mode 100644 drivers/soc/qcom/rpmhpd.c
>   create mode 100644 drivers/soc/qcom/rpmpd.c
>   create mode 100644 include/dt-bindings/power/qcom-rpmpd.h
>