linux-kernel - [RFC v3 00/10] DDR/L3 Scaling support on SDM845 and SC7180 SoCs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200127200350.24465-1-sibis@codeaurora.org>
Date:   Tue, 28 Jan 2020 01:33:40 +0530
From:   Sibi Sankar <sibis@...eaurora.org>
To:     viresh.kumar@...aro.org, sboyd@...nel.org,
        georgi.djakov@...aro.org, saravanak@...gle.com
Cc:     nm@...com, bjorn.andersson@...aro.org, agross@...nel.org,
        david.brown@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
        rjw@...ysocki.net, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, dianders@...omium.org, mka@...omium.org,
        vincent.guittot@...aro.org, amit.kucheria@...aro.org,
        ulf.hansson@...aro.org, Sibi Sankar <sibis@...eaurora.org>
Subject: [RFC v3 00/10] DDR/L3 Scaling support on SDM845 and SC7180 SoCs

This RFC series aims to extend cpu based scaling support to L3/DDR on
SDM845 and SC7180 SoCs.

Patches [1-3] - Blacklist SDM845 and SC7180 in cpufreq-dt-platdev
Patches [5-7] - Hack in a way to add/remove multiple opp tables to
                a single device. I am yet to fix the debugfs to
		support multiple opp_tables per device but wanted to
		send what was working upstream to get an idea if multiple
		opp tables per device is a feature that will be useful
		upstream.
Patches [9-10] - Add the cpu/cpu-ddr/cpu-l3 opp tables for SDM845
                 and SC7180 SoCs.

v3:
 * Migrated to using Saravana's opp-kBps bindings [1]
 * Fixed some misc comments from Rajendra
 * Added support for SC7180

v2:
 * Incorporated Viresh's comments from:
 https://lore.kernel.org/lkml/20190410102429.r6j6brm5kspmqxc3@vireshk-i7/
 https://lore.kernel.org/lkml/20190410112516.gnh77jcwawvld6et@vireshk-i7/
 * Dropped cpufreq-map passive governor

Git-branch: https://github.com/QuinAsura/linux/tree/lnext-012420

Some alternate ways of hosting the opp-tables:
https://github.com/QuinAsura/linux/commit/50b92bfaadc8f9a0d1e12249646e018bd6d1a9d3
https://github.com/QuinAsura/linux/commit/3d23d1eefd16ae6d9e3ef91e93e78749d8844e98
Viresh didn't really like ^^ bindings and they dont really scale well. Just
including them here for completeness.

Depends on the following series:
[1] https://patchwork.kernel.org/cover/11277199/
[2] https://patchwork.kernel.org/cover/11055499/ 
[3] https://patchwork.kernel.org/cover/11326381/

Sibi Sankar (10):
  arm64: dts: qcom: sdm845: Add SoC compatible to MTP
  cpufreq: blacklist SDM845 in cpufreq-dt-platdev
  cpufreq: blacklist SC7180 in cpufreq-dt-platdev
  OPP: Add and export helper to update voltage
  opp: of: export _opp_of_get_opp_desc_node
  opp: Allow multiple opp_tables to be mapped to a single device
  opp: Remove multiple attached opp tables from a device
  cpufreq: qcom: Update the bandwidth levels on frequency change
  arm64: dts: qcom: sdm845: Add cpu OPP tables
  arm64: dts: qcom: sc7180: Add cpu OPP tables

 arch/arm64/boot/dts/qcom/sc7180.dtsi    | 287 +++++++++++++++
 arch/arm64/boot/dts/qcom/sdm845-mtp.dts |   2 +-
 arch/arm64/boot/dts/qcom/sdm845.dtsi    | 453 ++++++++++++++++++++++++
 drivers/cpufreq/cpufreq-dt-platdev.c    |   2 +
 drivers/cpufreq/qcom-cpufreq-hw.c       | 246 +++++++++++--
 drivers/opp/core.c                      | 111 +++++-
 drivers/opp/of.c                        |   3 +-
 drivers/opp/opp.h                       |   2 +
 include/linux/pm_opp.h                  |  10 +
 9 files changed, 1083 insertions(+), 33 deletions(-)

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project