linux-kernel - Re: [PATCH v6 0/6] DVFS for IO devices on sdm845 and sc7180

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Date:   Thu, 18 Jun 2020 10:17:16 +0530
From:   Rajendra Nayak <rnayak@...eaurora.org>
To:     Matthias Kaehlcke <mka@...omium.org>,
        Mark Brown <broonie@...nel.org>
Cc:     bjorn.andersson@...aro.org, agross@...nel.org, robdclark@...il.com,
        robdclark@...omium.org, stanimir.varbanov@...aro.org,
        viresh.kumar@...aro.org, sboyd@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 0/6] DVFS for IO devices on sdm845 and sc7180

Hey Matthias, thanks for summarizing this.

On 6/18/2020 3:45 AM, Matthias Kaehlcke wrote:
> What is the plan for landing these, it seems not all must/should
> go through the QCOM tree.
> 
> My guesses:
> 
> tty: serial: qcom_geni_serial: Use OPP API to set clk/perf state
> spi: spi-geni-qcom: Use OPP API to set clk/perf state
>    QCOM tree due to shared dependency on change in include/linux/qcom-geni-se.h

That's correct, Bjorn/Andy, can these be pulled in now for 5.9?
They have acks from Greg for serial and Mark for the spi patch.
  
> drm/msm/dpu: Use OPP API to set clk/perf state
> drm/msm: dsi: Use OPP API to set clk/perf state
>    drm/msm tree

Correct, the dsi patch is still not reviewed by Rob, so once that's done,
I am guessing Rob would pull both of these.

> 
> media: venus: core: Add support for opp tables/perf voting
>    venus tree

correct, this is pending review/ack from Stan.

> 
> spi: spi-qcom-qspi: Use OPP API to set clk/perf state
>    SPI tree

Right, Mark has this acked, I am guessing he will pull this in at
some point.

thanks,
Rajendra

> 
> 
> Does this make sense or are there any dependencies I'm missing?
> 
> Thanks
> 
> Matthias
> 
> On Mon, Jun 15, 2020 at 05:32:38PM +0530, Rajendra Nayak wrote:
>> Changes in v6:
>> 1. rebased on 5.8-rc1, no functional change.
>>
>> Changes in v5:
>> 1. Opp cleanup path fixed up across drivers
>>
>> Changes in v4:
>> 1. Fixed all review feedback on v3
>> 2. Dropped the dts patches, will post as a seperate series once
>> driver changes are reviewed and merged.
>> The driver changes without DT updates to include OPP tables will
>> have zero functional change.
>> 3. Dropped the mmc/sdhc patch, which is a standalone patch. will
>> repost if needed seperately.
>>
>> Changes in v3:
>> 1. Added better error handling for dev_pm_opp_of_add_table()
>> 2. Some minor changes and fixes in 'PATCH 12/17' as compared to v2
>> 3. Dropped the mmc patch picked up by Ulf [2]
>>
>> Changes in v2:
>> 1. Added error handling for dev_pm_opp_set_clkname()
>> and dev_pm_opp_of_add_table()
>> 2. Used dev_pm_opp_put_clkname() in the cleanup path
>> 3. Dropped the OPP patch pulled in by Viresh [1]
>> 4. Dropped the UFS patches since they had some major rework
>> needed because of changes that were merged in the merge window
>> and I don't have a UFS device currently to validate the changes.
>>
>> We have had support added in the OPP core for a while now to support
>> DVFS for IO devices, and this series uses that infrastructure to
>> add DVFS support for various IO devices in sdm845 and sc7180 SoCs.
>>
>> [1] https://lkml.org/lkml/2020/4/14/98
>> [2] https://lore.kernel.org/patchwork/patch/1226381/
>>
>> Rajendra Nayak (6):
>>    tty: serial: qcom_geni_serial: Use OPP API to set clk/perf state
>>    spi: spi-geni-qcom: Use OPP API to set clk/perf state
>>    drm/msm/dpu: Use OPP API to set clk/perf state
>>    drm/msm: dsi: Use OPP API to set clk/perf state
>>    media: venus: core: Add support for opp tables/perf voting
>>    spi: spi-qcom-qspi: Use OPP API to set clk/perf state
>>
>>   drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c  |  3 +-
>>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c        | 26 +++++++++++-
>>   drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h        |  4 ++
>>   drivers/gpu/drm/msm/dsi/dsi.h                  |  2 +
>>   drivers/gpu/drm/msm/dsi/dsi_cfg.c              |  4 +-
>>   drivers/gpu/drm/msm/dsi/dsi_host.c             | 58 ++++++++++++++++++++++++++
>>   drivers/media/platform/qcom/venus/core.c       | 43 ++++++++++++++++---
>>   drivers/media/platform/qcom/venus/core.h       |  5 +++
>>   drivers/media/platform/qcom/venus/pm_helpers.c | 54 ++++++++++++++++++++++--
>>   drivers/spi/spi-geni-qcom.c                    | 26 ++++++++++--
>>   drivers/spi/spi-qcom-qspi.c                    | 28 ++++++++++++-
>>   drivers/tty/serial/qcom_geni_serial.c          | 34 ++++++++++++---
>>   include/linux/qcom-geni-se.h                   |  4 ++
>>   13 files changed, 268 insertions(+), 23 deletions(-)
>>
>> -- 
>> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
>> of Code Aurora Forum, hosted by The Linux Foundation
>>

-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation