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    Subject[PATCH v2 00/19] NVIDIA Tegra devfreq improvements and Tegra20/30 support
    Date
    Hello,

    I tried to utilize the Tegra devfreq driver on Tegra30 and found out that
    it doesn't work properly due to improper Hz<->kHz conversions made by the
    driver. After fixing that problem and doing some more testing I noticed
    that there are things that could be improved and in result here is this
    patchset that fixes the problems, makes some improvements and adds support
    for NVIDIA Tegra30 SoC's. This series was tested on Tegra30 and Tegra124
    machines.

    This series also adds support for the Tegra20 SoC's that do not have
    the ACTMON hardware unit, but can use Memory Controller counters to make
    decision about the required memory frequency. Please note that the patch
    that instantiates a platform device for the driver isn't a part of this
    series, I'll submit it later on because of interdependency with some other
    ongoing patchset.

    Please review, thanks.

    Changelog:

    v2: The patchset was quite heavily reworked since v1, few patches we
    dropped or squashed into the new ones and more patches we added.
    In a result more bugs and potential problems are fixed now, driver's
    code got more clean up.

    The Tegra20 driver-addition patch is now a part of this series, it has
    no changes since v1.

    Dmitry Osipenko (19):
    PM / devfreq: tegra: Fix kHz to Hz conversion
    PM / devfreq: tegra: Replace readl-writel with relaxed versions
    PM / devfreq: tegra: Don't ignore clk errors
    PM / devfreq: tegra: Don't set EMC clock rate to maximum on probe
    PM / devfreq: tegra: Replace write memory barrier with the read
    barrier
    PM / devfreq: tegra: Fix missed error checking on devfreq
    initialization failure
    PM / devfreq: tegra: Register clk notifier in the end of driver's
    probe
    PM / devfreq: tegra: Remove OPP entries on driver removal
    PM / devfreq: tegra: Change interrupt request order
    PM / devfreq: tegra: Drop primary interrupt handler
    PM / devfreq: tegra: De-initialize properly on driver's probe error
    PM / devfreq: tegra: Avoid inconsistency of current frequency value
    PM / devfreq: tegra: Mark ACTMON's governor as immutable
    PM / devfreq: tegra: Move governor registration to driver's probe
    PM / devfreq: tegra: Synchronize IRQ after masking it in hardware
    PM / devfreq: tegra: Reconfigure hardware on governor's restart
    PM / devfreq: tegra: Support Tegra30
    PM / devfreq: tegra: Enable COMPILE_TEST for the driver
    PM / devfreq: Introduce driver for NVIDIA Tegra20

    MAINTAINERS | 8 +
    drivers/devfreq/Kconfig | 15 +-
    drivers/devfreq/Makefile | 1 +
    drivers/devfreq/tegra-devfreq.c | 296 +++++++++++++-----------------
    drivers/devfreq/tegra20-devfreq.c | 177 ++++++++++++++++++
    5 files changed, 324 insertions(+), 173 deletions(-)
    create mode 100644 drivers/devfreq/tegra20-devfreq.c

    --
    2.21.0

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