linux-kernel - [PATCH v2 00/14] NVIDIA Tegra memory and power management changes for 5.14

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Date:   Mon, 24 May 2021 02:13:21 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        Nikola Milosavljević <mnidza@...look.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        Viresh Kumar <vireshk@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Matt Merhar <mattmerhar@...tonmail.com>,
        Paul Fertser <fercerpav@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Mikko Perttunen <mperttunen@...dia.com>
Cc:     linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        Nathan Chancellor <nathan@...nel.org>,
        linux-clk@...r.kernel.org
Subject: [PATCH v2 00/14] NVIDIA Tegra memory and power management changes for 5.14

This series:

  1. Adds CPU/core voltage bump before system is rebooted.
  2. Adds new devm_tegra_core_dev_init_opp_table() helper and switches
     Tegra memory drivers to use it.
  3. Adds compile-testing support to the Tegra memory drivers.
  4. Adds Tegra SoC core power domain support.

Changelog:

v2: - Added more clk stubs that should fix build error reported by the
      kernel bot to v1 for the T210 memory driver.

    - Added r-b from Krzysztof Kozlowski to the memory patches.

    - Added back voltage restore on detaching of coupled regulators to
      the T20 regulator coupler which previously got missed by accident.

    - Added new patch:

        regulator: core: Detach coupled regulator before coupling count is dropped

      It fixes skipped voltage balancing on detaching of regulators which I
      happened to notice due to the recent regression of the MAX77620 driver
      that made driver to re-probe and detach coupled regulators.

v1: - Merged previous patches into this single series.

    - Added ack from Rob Herring to the core domain DT binding patch.

    - Implemented suggestions that were given by Krzysztof Kozlowski:

        - Factored out soc_is_tegra() stub into standalone patch.
        - Updated tags of the "Fix compilation warnings on 64bit platforms"
          patch, added reported-by from lkp robot and removed suggested-by
          from Nathan Chancellor.
        - Switched to use use BIT() macro.

    - Added r-b from Krzysztof Kozlowski to "Enable compile testing for
      all drivers" patch.

    - Added r-b from Nathan Chancellor.

    - Dropped voltage floor/ceiling from devm_tegra_core_dev_init_opp_table()
      since only memory drivers now need to initialize voltage vote and they
      don't need floor/ceil. This was suggested by Viresh Kumar.

Dmitry Osipenko (14):
  regulator: core: Add regulator_sync_voltage_rdev()
  regulator: core: Detach coupled regulator before coupling count is
    dropped
  soc/tegra: regulators: Bump voltages on system reboot
  soc/tegra: Add stub for soc_is_tegra()
  soc/tegra: Add devm_tegra_core_dev_init_opp_table()
  soc/tegra: fuse: Add stubs needed for compile-testing
  clk: tegra: Add stubs needed for compile-testing
  memory: tegra: Fix compilation warnings on 64bit platforms
  memory: tegra: Enable compile testing for all drivers
  memory: tegra20-emc: Use devm_tegra_core_dev_init_opp_table()
  memory: tegra30-emc: Use devm_tegra_core_dev_init_opp_table()
  dt-bindings: soc: tegra-pmc: Document core power domain
  soc/tegra: pmc: Add core power domain
  soc/tegra: regulators: Support core domain state syncing

 .../arm/tegra/nvidia,tegra20-pmc.yaml         |  35 +++++
 drivers/memory/tegra/Kconfig                  |  16 +-
 drivers/memory/tegra/tegra124-emc.c           |   4 +-
 drivers/memory/tegra/tegra20-emc.c            |  48 +-----
 drivers/memory/tegra/tegra30-emc.c            |  52 +------
 drivers/regulator/core.c                      |  37 ++++-
 drivers/soc/tegra/Kconfig                     |  14 ++
 drivers/soc/tegra/common.c                    |  97 ++++++++++++
 drivers/soc/tegra/pmc.c                       | 143 ++++++++++++++++++
 drivers/soc/tegra/regulators-tegra20.c        |  97 +++++++++++-
 drivers/soc/tegra/regulators-tegra30.c        |  96 +++++++++++-
 include/linux/clk/tegra.h                     |  82 +++++++---
 include/linux/regulator/driver.h              |   1 +
 include/soc/tegra/common.h                    |  38 +++++
 include/soc/tegra/fuse.h                      |  20 ++-
 15 files changed, 650 insertions(+), 130 deletions(-)

-- 
2.30.2