Date:   Mon, 13 Apr 2020 22:34:12 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Maulik Shah <mkshah@...eaurora.org>
Cc:     swboyd@...omium.org, evgreen@...omium.org, dianders@...omium.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        agross@...nel.org, mka@...omium.org, rnayak@...eaurora.org,
        ilina@...eaurora.org, lsrao@...eaurora.org
Subject: Re: [PATCH v17 0/6] Invoke rpmh_flush for non OSI targets

On Sun 12 Apr 07:49 PDT 2020, Maulik Shah wrote:

I sorted them includes and applied the series.

Thanks,
Bjorn

> Changes in v17:
> - Address Stephen's comments on change 3 and change 4.
> - Add Stephen's Reviewed-by on change 5.
> 
> Changes in v16:
> - Use base address in probe only, drop change to save it in drv->base
> - Address Doug's comments on change 5,6 and 7.
> - Add Doug's Reviewed-by.
> 
> Changes in v15:
> - Address Doug's comments on change 3 of v14 and add Reviewed-by
> - Split change 4 of v14 to save drv->base in a new change
> - Address Doug's comments on change 4, 5, 6 of v14
> - Add missing NOTIFY_OK for rpmh_flush() success case
> - First 5 changes in this series can be merged without change 6 and 7
> 
> Changes in v14:
> - Address Doug's comments on change 3 from v13
> - Drop new APIs for start and end transaction from change 4 in v13
> - Update change 4 to use cpu pm notifications instead
> - Add [5] as change 5 to enable use of WAKE TCS when ACTIVE TCS count is 0
> - Add change 6 to Allow multiple WAKE TCS to be used as ACTIVE TCSes
> - First 4 changes can be merged even without change 5 and 6.
> 
> Changes in v13:
> - Address Stephen's comment to maintain COMPILE_TEST
> - Address Doug's comments and add new APIs for start and end transaction
> 
> Changes in v12:
> - Kconfig change to remove COMPILE_TEST was dropped in v11, reinclude it.
> 
> Changes in v11:
> - Address Doug's comments on change 2 and 3
> - Include change to invalidate TCSes before flush from [4]
> 
> Changes in v10:
> - Address Evan's comments to update commit message on change 2
> - Add Evan's Reviewed by on change 2
> - Remove comment from rpmh_flush() related to last CPU invoking it
> - Rebase all changes on top of next-20200302
> 
> Changes in v9:
> - Keep rpmh_flush() to invoke from within cache_lock
> - Remove comments related to only last cpu invoking rpmh_flush()
> 
> Changes in v8:
> - Address Stephen's comments on changes 2 and 3
> - Add Reviewed by from Stephen on change 1
> 
> Changes in v7:
> - Address Srinivas's comments to update commit text
> - Add Reviewed by from Srinivas
> 
> Changes in v6:
> - Drop 1 & 2 changes from v5 as they already landed in maintainer tree
> - Drop 3 & 4 changes from v5 as no user at present for power domain in rsc
> - Rename subject to appropriate since power domain changes are dropped
> - Rebase other changes on top of next-20200221
> 
> Changes in v5:
> - Add Rob's Acked by on dt-bindings change
> - Drop firmware psci change
> - Update cpuidle stats in dtsi to follow PC mode
> - Include change to update dirty flag when data is updated from [4]
> - Add change to invoke rpmh_flush when caches are dirty
> 
> Changes in v4:
> - Add change to allow hierarchical topology in PC mode
> - Drop hierarchical domain idle states converter from v3
> - Address Merge sc7180 dtsi change to add low power modes
> 
> Changes in v3:
> - Address Rob's comment on dt property value
> - Address Stephen's comments on rpmh-rsc driver change
> - Include sc7180 cpuidle low power mode changes from [1]
> - Include hierarchical domain idle states converter change from [2]
> 
> Changes in v2:
> - Add Stephen's Reviewed-By to the first three patches
> - Addressed Stephen's comments on fourth patch
> - Include changes to connect rpmh domain to cpuidle and genpds
> 
> Resource State Coordinator (RSC) is responsible for powering off/lowering
> the requirements from CPU subsystem for the associated hardware like buses,
> clocks, and regulators when all CPUs and cluster is powered down.
> 
> RSC power domain uses last-man activities provided by genpd framework based
> on Ulf Hansoon's patch series[3], when the cluster of CPUs enter deepest
> idle states. As a part of domain poweroff, RSC can lower resource state
> requirements by flushing the cached sleep and wake state votes for various
> resources.
> 
> [1] https://patchwork.kernel.org/patch/11218965
> [2] https://patchwork.kernel.org/patch/10941671
> [3] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=222355
> [4] https://patchwork.kernel.org/project/linux-arm-msm/list/?series=236503
> [5] https://patchwork.kernel.org/patch/10818129
> 
> Maulik Shah (5):
>   arm64: dts: qcom: sc7180: Add cpuidle low power states
>   soc: qcom: rpmh: Update dirty flag only when data changes
>   soc: qcom: rpmh: Invalidate SLEEP and WAKE TCSes before flushing new
>     data
>   soc: qcom: rpmh: Invoke rpmh_flush() for dirty caches
>   soc: qcom: rpmh-rsc: Allow using free WAKE TCS for active request
> 
> Raju P.L.S.S.S.N (1):
>   soc: qcom: rpmh-rsc: Clear active mode configuration for wake TCS
> 
>  arch/arm64/boot/dts/qcom/sc7180.dtsi |  78 +++++++++++++
>  drivers/soc/qcom/rpmh-internal.h     |  25 ++--
>  drivers/soc/qcom/rpmh-rsc.c          | 220 +++++++++++++++++++++++++++--------
>  drivers/soc/qcom/rpmh.c              |  79 ++++++-------
>  4 files changed, 305 insertions(+), 97 deletions(-)
> 
> -- 
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
> of Code Aurora Forum, hosted by The Linux Foundation

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