cpufreq: dt-platdev: block SDM670 in cpufreq-dt-platdev

The Snapdragon 670 uses the Qualcomm driver for CPU frequency scaling.
Block this driver from loading on it so the driver does not pollute
dmesg with an error.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: qcom-nvmem: Introduce cpufreq for ipq95xx

IPQ95xx SoCs have different OPPs available for the CPU based on
the SoC variant. This can be determined from an eFuse register
present in the silicon.

Added support for ipq95xx on nvmem driver which helps to
determine OPPs at runtime based on the eFuse register which
has the CPU frequency limits. opp-supported-hw dt binding
can be used to indicate the available OPPs for each limit.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Praveenkumar I <ipkumar@codeaurora.org>
Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
[ Viresh: Fixed subject ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: qcom-nvmem: Enable cpufreq for ipq53xx

IPQ53xx have different OPPs available for the CPU based on
SoC variant. This can be determined through use of an eFuse
register present in the silicon.

Added support for ipq53xx on nvmem driver which helps to
determine OPPs at runtime based on the eFuse register which
has the CPU frequency limits. opp-supported-hw dt binding
can be used to indicate the available OPPs for each limit.

nvmem driver also creates the "cpufreq-dt" platform_device after
passing the version matching data to the OPP framework so that the
cpufreq-dt handles the actual cpufreq implementation.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
[ Viresh: Fixed subject ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: qcom-nvmem: add support for IPQ8074

IPQ8074 comes in 3 families:
* IPQ8070A/IPQ8071A (Acorn) up to 1.4GHz
* IPQ8172/IPQ8173/IPQ8174 (Oak) up to 1.4GHz
* IPQ8072A/IPQ8074A/IPQ8076A/IPQ8078A (Hawkeye) up to 2.2GHz

So, in order to be able to share one OPP table lets add support for IPQ8074
family based of SMEM SoC ID-s as speedbin fuse is always 0 on IPQ8074.

IPQ8074 compatible is blacklisted from DT platdev as the cpufreq device
will get created by NVMEM CPUFreq driver.

Signed-off-by: Robert Marko <robimarko@gmail.com>
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>
[ Viresh: Fixed rebase conflict. ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: qcom-nvmem: add support for IPQ6018

IPQ6018 SoC series comes in multiple SKU-s, and not all of them support
high frequency OPP points.

SoC itself does however have a single bit in QFPROM to indicate the CPU
speed-bin.
That bit is used to indicate frequency limit of 1.5GHz, but that alone is
not enough as IPQ6000 only goes up to 1.2GHz, but SMEM ID can be used to
limit it further.

IPQ6018 compatible is blacklisted from DT platdev as the cpufreq device
will get created by NVMEM CPUFreq driver.

Signed-off-by: Robert Marko <robimarko@gmail.com>
[ Viresh: Fixed rebase conflict. ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt-platdev: add am62p5 to blocklist

The am62p5 family of SoCs is a variation of the am625 and am62a7 SoC
family. Add this device along with the devices which will use the
operating-points-v2 property.

Signed-off-by: Bryan Brattlof <bb@ti.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt: platdev: Add MSM8909 to blocklist

MSM8909 uses qcom-cpufreq-nvmem to attach power domains and to parse the
speedbin from NVMEM (for opp-supported-hw).

Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
[ Viresh: Fixed order in table ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add QCM6490 to cpufreq-dt-platdev blocklist

The Qualcomm QCM6490 platform uses the qcom-cpufreq-hw driver, so add it
to the cpufreq-dt-platdev driver's blocklist.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blocklist more Qualcomm platforms in cpufreq-dt-platdev

All Qualcomm platforms utilizing the qcom-cpufreq-hw driver have no
business in using cpufreq-dt. Prevent that from happening.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blocklist MSM8998 in cpufreq-dt-platdev

Add the MSM8998 to the blocklist since the CPU scaling on this platform
is handled by a separate driver.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Tested-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt-platdev: Support building as module

Make the cpufreq platdev driver as tristate so that it can be built
as loadable module.

Also add MODULE_LICENSE to support building as module.

Signed-off-by: Zhipeng Wang <zhipeng.wang_1@nxp.com>
[ Viresh: Merged two commits, included module.h ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt-platdev: Blacklist ti,am62a7 SoC

Add ti,am62a7 SoC to the blacklist as the ti-cpufreq driver will handle
creating the cpufreq-dt platform device after it completes so it is not
created twice.

Based on AM625 CPUFreq patch series by Dave Gerlach.

Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt-platdev: Add JH7110 SOC to the allowlist

Add the compatible strings for supporting the generic
cpufreq driver on the StarFive JH7110 SoC.

Signed-off-by: Mason Huo <mason.huo@starfivetech.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Adjust includes to remove of_device.h

Now that of_cpu_device_node_get() is defined in of.h, of_device.h is just
implicitly including other includes, and is no longer needed. Adjust the
include files with what was implicitly included by of_device.h (cpu.h and
of.h) and drop including of_device.h.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230329-dt-cpu-header-cleanups-v1-14-581e2605fe47@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

cpufreq: Add SM7225 to cpufreq-dt-platdev blocklist

The Qualcomm SM7225 platform uses the qcom-cpufreq-hw driver, so add
it to the cpufreq-dt-platdev driver's blocklist.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Use of_property_present() for testing DT property presence

It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add SM6375 to cpufreq-dt-platdev blocklist

The Qualcomm SM6375 platform uses the qcom-cpufreq-hw driver, so add
it to the cpufreq-dt-platdev driver's blocklist.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add Tegra234 to cpufreq-dt-platdev blocklist

Tegra234 platform uses the tegra194-cpufreq driver, so add it
to the blocklist in cpufreq-dt-platdev driver to avoid the cpufreq
driver registration from there.

Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states

This driver implements CPU frequency scaling for Apple Silicon SoCs,
including M1 (t8103), M1 Max/Pro/Ultra (t600x), and M2 (t8112).

Each CPU cluster has its own register set, and frequency management is
fully automated by the hardware; the driver only has to write one
register. There is boost frequency support, but the hardware will only
allow their use if only a subset of cores in a cluster are in
non-deep-idle. Since we don't support deep idle yet, these frequencies
are not achievable, but the driver supports them. They will remain
disabled in the device tree until deep idle is implemented, to avoid
confusing users.

This driver does not yet implement the memory controller performance
state tuning that usually accompanies higher CPU p-states. This will be
done in a future patch.

Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt-platdev: Blacklist ti,am625 SoC

Add ti,am625 SoC to the blacklist as the ti-cpufreq driver will handle
creating the cpufreq-dt platform device after it completes so it is not
created twice.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add SM6115 to cpufreq-dt-platdev blocklist

The Qualcomm SM6115 platform uses the
qcom-cpufreq-hw driver, so add it to the cpufreq-dt-platdev driver's
blocklist.

Signed-off-by: Adam Skladowski <a39.skl@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add MT8186 to cpufreq-dt-platdev blocklist

This SoC shall use the mediatek-cpufreq driver, or the system will
crash upon any clock scaling request: add it to the cpufreq-dt-platdev
blocklist.

Fixes: 39b360102f3a ("cpufreq: mediatek: Add support for MT8186")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blocklist Qualcomm sc8280xp and sa8540p in cpufreq-dt-platdev

The Qualcomm sc8280xp and sa8540p platforms also uses the
qcom-cpufreq-hw driver, so add them to the cpufreq-dt-platdev driver's
blocklist.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add i.MX7S to cpufreq-dt-platdev blocklist

The i.MX 7Solo currently does not have multiple operating points,
however, in order for the i.MX Thermal driver to successfully probe
a cpufreq device is required. Add it to the cpufreq-dt-platdev
driver's blocklist to allow using imx-cpufreq-dt.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Cc: Stefan Agner <stefan@agner.ch>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blocklist more Qualcomm platforms in cpufreq-dt-platdev

The Qualcomm sa8155p, sm6350, sm8250 and sm8350 platforms also uses the
qcom-cpufreq-hw driver, so add them to the cpufreq-dt-platdev driver's
blocklist.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blocklist Qualcomm sm8150 in cpufreq-dt-platdev

The Qualcomm sm8150 platform uses the qcom-cpufreq-hw driver, so
add it to the cpufreq-dt-platdev driver's blocklist.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blacklist Qualcomm sc8180x in cpufreq-dt-platdev

The Qualcomm SC8180x platform uses the qcom-cpufreq-hw driver, so
it in the cpufreq-dt-platdev driver's blocklist.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt: Rename black/white-lists

Rename them in accordance with the coding guidelines.

Reviewed-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: mediatek: add support for mt8365

Add compatible stirng for MediaTek MT8365 SoC. Add also the
compatible in the blacklist of the cpufreq-dt-platdev driver.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blacklist SC7280 in cpufreq-dt-platdev

Add SC7280 to cpufreq-dt-platdev blacklist since the actual scaling is
handled by the 'qcom-cpufreq-hw' driver.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blacklist Arm Vexpress platforms in cpufreq-dt-platdev

Add "arm,vexpress" to cpufreq-dt-platdev blacklist since the actual
scaling is handled by the firmware cpufreq drivers(scpi, scmi and
vexpress-spc).

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: remove tango driver

The tango platform is getting removed, so the driver is no
longer needed.

Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Cc: Mans Rullgard <mans@mansr.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[ Viresh: Update cpufreq-dt-platdev.c as well ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blacklist mt8516 in cpufreq-dt-platdev

Add MT8516 to cpufreq-dt-platdev blacklist since the actual scaling is
handled by the 'mediatek-cpufreq' driver.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: mediatek: Add support for mt8167

Add compatible string for mediatek mt8167

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt-platdev: Blacklist st,stih418 SoC

Add st,stih418 SoC in the blacklist since the cpufreq driver
for this platform is already registering the driver.

Signed-off-by: Alain Volmat <avolmat@me.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blacklist SC7180 in cpufreq-dt-platdev

Add SC7180 to cpufreq-dt-platdev blacklist since the actual scaling is
handled by the 'qcom-cpufreq-hw' driver.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: blacklist SDM845 in cpufreq-dt-platdev

Add SDM845 to cpufreq-dt-platdev blacklist since the actual scaling is
handled by the 'qcom-cpufreq-hw' driver.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt: Add support for r8a7742

Add the compatible strings for supporting the generic cpufreq driver on
the Renesas RZ/G1H (R8A7742) SoC.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add i.MX7ULP to cpufreq-dt-platdev blacklist

Add i.MX7ULP to cpufreq-dt-platdev blacklist.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: qcom: Add support for krait based socs

In Certain QCOM SoCs like ipq8064, apq8064, msm8960, msm8974
that has KRAIT processors the voltage/current value of each OPP
varies based on the silicon variant in use.

The required OPP related data is determined based on
the efuse value. This is similar to the existing code for
kryo cores. So adding support for krait cores here.

Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Use imx-cpufreq-dt for i.MX8MP's speed grading

Add i.MX8MP to blacklist, so that imx-cpufreq-dt driver can handle
speed grading bits just like other i.MX8M SoCs.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt-platdev: Blacklist NVIDIA Tegra20 and Tegra30 SoCs

Both NVIDIA Tegra20 and Tegra30 SoCs should be blacklisted because CPU
OPPs use supported_hw and thus platdev isn't suitable for these SoCs.
Currently cpufreq-dt driver produces a bit annoying warning splats
during boot because valid OPPs are not found, this will be fixed once
tegra20-cpufreq driver will be update to support cpufreq-dt. The warnings
will also happen on older stable kernels using newer device-trees, thus
this patch should be backported to stable kernels as well.

Cc: <stable@vger.kernel.org>
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Fixes: 4053aa65c517 ("ARM: tegra: cardhu-a04: Add CPU Operating Performance Points")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Initialize cpufreq-dt driver earlier

This allows HW drivers that depend on cpufreq-dt to initialize earlier.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/353c745d4ca1feff600bd44154c01c013f185ca4.1571656015.git.amit.kucheria@linaro.org

ARM: dts: omap34xx & omap36xx: replace opp-v1 tables by opp-v2 for

With the driver installed, we can change the opp-v1 table format
to opp-v2.

In addition, move omap3 from whitelist to blacklist in cpufreq-dt-platdev
in the same patch, because doing either first breaks operation and
may make trouble in bisect.

We also can remove opp-v1 table for omap3-n950-n9 since its 1GHz
capability is now automatically detected.

We also fix a wrong OPP4 voltage for omap3430 which must be
0.6V + 54*12.5mV = 1275mV. Otherwise the twl4030 driver will reject
this OPP.

Note: the high speed OPPs that were not available in the opp-v1 tables
are tagged "turbo-mode;" which means they are not automatically
activated by the govenors or cpu-freq.

To enable you have to write

echo 1 >/sys/devices/system/cpu/cpufreq/boost

Note: to hard disable an OPP in a board.dts file use e.g.

&cpu0_opp_table: {
/delete-node/ opp1g-1000000000; /* do not use */
};

or alternatively:

&cpu0_opp_table: {
opp1g-1000000000 {
status = "disabled"; /* do not use */
};
};

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add qcs404 to cpufreq-dt-platdev blacklist

Add qcs404 to cpufreq-dt-platdev blacklist.

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Co-developed-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: mediatek: Add support for mt8183

Add compatible string for mediatek mt8183

Signed-off-by: Andrew-sh.Cheng <andrew-sh.cheng@mediatek.com>
[ VK: Fixed rebase conflict ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Use imx-cpufreq-dt for i.MX8MN's speed grading

Add i.MX8MN to blacklist, so that imx-cpufreq-dt driver can handle
speed grading bits just like other i.MX8M SoCs.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add sun50i nvmem based CPU scaling driver

For some SoCs, the CPU frequency subset and voltage value of each OPP
varies based on the silicon variant in use. The sun50i-cpufreq-nvmem
driver reads the efuse value from the SoC to provide the OPP framework
with required information.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

cpufreq: Switch imx7d to imx-cpufreq-dt for speed grading

This driver can handle speed grading bits on imx7d just like on imx8mq
and imx8mm.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: Add imx-cpufreq-dt driver

Right now in upstream imx8m cpufreq support just lists a common subset
of OPPs because the higher ones should only be attempted after checking
speed grading in fuses.

Add a small driver which checks speed grading from nvmem cells before
registering cpufreq-dt.

This driver allows unlocking all frequencies for imx8mm and imx8mq and
could be applied to other chips like imx7d

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

cpufreq: dt-platdev: add Tegra210 to blacklist

Tegra210 uses "tegra124-cpufreq" platform driver to register device data
for "cpufreq-dt" driver. So add it in the blacklist for
"cpufreq-dt-platdev" driver to drop that.

Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

cpufreq: dt-platdev: allow RK3399 to have separate tunables per cluster

RK3899 has one cluster with 4 small cores, and another one with 2 big
cores, with cores in different clusters having different OPPs and thus
needing separate set of tunables. Let's enable this via
"have_governor_per_policy" platform data.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add support for r8a7744

Add the compatible strings for supporting the generic cpufreq driver on
the Renesas RZ/G1N (R8A7744) SoC.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: Add Kryo CPU scaling driver

In Certain QCOM SoCs like apq8096 and msm8996 that have KRYO processors,
the CPU frequency subset and voltage value of each OPP varies
based on the silicon variant in use. Qualcomm Process Voltage Scaling Tables
defines the voltage and frequency value based on the msm-id in SMEM
and speedbin blown in the efuse combination.
The qcom-cpufreq-kryo driver reads the msm-id and efuse value from the SoC
to provide the OPP framework with required information.
This is used to determine the voltage and frequency value for each OPP of
operating-points-v2 table when it is parsed by the OPP framework.

Signed-off-by: Ilia Lin <ilialin@codeaurora.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Revert "cpufreq: rcar: Add support for R8A7795 SoC"

This reverts commit 034def597bb73cbf29ffade7d8aec8408af8c743.

This is no longer needed since the following commit and to the best
of my knowledge is not relied on by any upstream DTS:

edeec420de24 (cpufreq: dt-platdev: Automatically create cpufreq
device with OPP v2)

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Revert "cpufreq: dt: Add r8a7796 support to to use generic cpufreq driver"

This reverts commit bea2ebca6b917e46d0c585f416f1326fdf41e69b.

This is no longer needed since the following commit and to the best
of my knowledge is not relied on by any upstream DTS:

edeec420de24 (cpufreq: dt-platdev: Automatically create cpufreq
device with OPP v2)

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: mediatek: add mediatek related projects into blacklist

mediatek projects will use mediate-cpufreq.c as cpufreq driver,
instead of using cpufreq_dt.c
Add mediatek related projects into cpufreq-dt blacklist

Signed-off-by: Andrew-sh Cheng <andrew-sh.cheng@mediatek.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Remove support for Exynos4212 SoCs

Support for Exynos4212 SoCs has been removed by commit bca9085e0ae9
"ARM: dts: exynos: remove Exynos4212 support (dead code)", so there
is no need to keep remaining dead code related to this SoC version.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt-platdev: drop socionext,uniphier-ld6b from whitelist

As you see arch/arm/boot/dts/uniphier-ld6b.dtsi, it includes
uniphier-pxs2.dtsi, which uses "operating-points-v2" property
and whose cpufreq device is automatically created.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Fix sysfs duplicate filename creation for platform-device

ti-cpufreq and cpufreq-dt-platdev drivers are registering platform-device
with same name "cpufreq-dt" using platform_device_register_*() routines.
This is leading to build warnings appended below.

Providing hardware information to OPP framework along with the platform-
device creation should be done by ti-cpufreq driver before cpufreq-dt
driver comes into place.

This patch add's TI am33xx, am43 and dra7 platforms (which use opp-v2
property) to the blacklist of devices in cpufreq-dt-platform driver to
avoid creating platform-device twice and remove build warnings.

[ 2.370167] ------------[ cut here ]------------
[ 2.375087] WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x58/0x78
[ 2.383112] sysfs: cannot create duplicate filename '/devices/platform/cpufreq-dt'
[ 2.391219] Modules linked in:
[ 2.394506] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0-next-20170912 #1
[ 2.402006] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 2.408437] [<c0110a28>] (unwind_backtrace) from [<c010ca84>] (show_stack+0x10/0x14)
[ 2.416568] [<c010ca84>] (show_stack) from [<c0827d64>] (dump_stack+0xac/0xe0)
[ 2.424165] [<c0827d64>] (dump_stack) from [<c0137470>] (__warn+0xd8/0x104)
[ 2.431488] [<c0137470>] (__warn) from [<c01374d0>] (warn_slowpath_fmt+0x34/0x44)
[ 2.439351] [<c01374d0>] (warn_slowpath_fmt) from [<c03459d0>] (sysfs_warn_dup+0x58/0x78)
[ 2.447938] [<c03459d0>] (sysfs_warn_dup) from [<c0345ab8>] (sysfs_create_dir_ns+0x80/0x98)
[ 2.456719] [<c0345ab8>] (sysfs_create_dir_ns) from [<c082c554>] (kobject_add_internal+0x9c/0x2d4)
[ 2.466124] [<c082c554>] (kobject_add_internal) from [<c082c7d8>] (kobject_add+0x4c/0x9c)
[ 2.474712] [<c082c7d8>] (kobject_add) from [<c05803e4>] (device_add+0xcc/0x57c)
[ 2.482489] [<c05803e4>] (device_add) from [<c0584b74>] (platform_device_add+0x100/0x220)
[ 2.491085] [<c0584b74>] (platform_device_add) from [<c05855a8>] (platform_device_register_full+0xf4/0x118)
[ 2.501305] [<c05855a8>] (platform_device_register_full) from [<c067023c>] (ti_cpufreq_init+0x150/0x22c)
[ 2.511253] [<c067023c>] (ti_cpufreq_init) from [<c0101df4>] (do_one_initcall+0x3c/0x170)
[ 2.519838] [<c0101df4>] (do_one_initcall) from [<c0c00eb4>] (kernel_init_freeable+0x1fc/0x2c4)
[ 2.528974] [<c0c00eb4>] (kernel_init_freeable) from [<c083bcac>] (kernel_init+0x8/0x110)
[ 2.537565] [<c083bcac>] (kernel_init) from [<c0107d18>] (ret_from_fork+0x14/0x3c)
[ 2.545981] ---[ end trace 2fc00e213c13ab20 ]---
[ 2.551051] ------------[ cut here ]------------
[ 2.555931] WARNING: CPU: 0 PID: 1 at lib/kobject.c:240 kobject_add_internal+0x254/0x2d4
[ 2.564578] kobject_add_internal failed for cpufreq-dt with -EEXIST, don't try to register
things with the same name in the same directory.
[ 2.577977] Modules linked in:
[ 2.581261] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 4.13.0-next-20170912 #1
[ 2.590013] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 2.596437] [<c0110a28>] (unwind_backtrace) from [<c010ca84>] (show_stack+0x10/0x14)
[ 2.604573] [<c010ca84>] (show_stack) from [<c0827d64>] (dump_stack+0xac/0xe0)
[ 2.612172] [<c0827d64>] (dump_stack) from [<c0137470>] (__warn+0xd8/0x104)
[ 2.619494] [<c0137470>] (__warn) from [<c01374d0>] (warn_slowpath_fmt+0x34/0x44)
[ 2.627362] [<c01374d0>] (warn_slowpath_fmt) from [<c082c70c>] (kobject_add_internal+0x254/0x2d4)
[ 2.636666] [<c082c70c>] (kobject_add_internal) from [<c082c7d8>] (kobject_add+0x4c/0x9c)
[ 2.645255] [<c082c7d8>] (kobject_add) from [<c05803e4>] (device_add+0xcc/0x57c)
[ 2.653027] [<c05803e4>] (device_add) from [<c0584b74>] (platform_device_add+0x100/0x220)
[ 2.661615] [<c0584b74>] (platform_device_add) from [<c05855a8>] (platform_device_register_full+0xf4/0x118)
[ 2.671833] [<c05855a8>] (platform_device_register_full) from [<c067023c>] (ti_cpufreq_init+0x150/0x22c)
[ 2.681779] [<c067023c>] (ti_cpufreq_init) from [<c0101df4>] (do_one_initcall+0x3c/0x170)
[ 2.690377] [<c0101df4>] (do_one_initcall) from [<c0c00eb4>] (kernel_init_freeable+0x1fc/0x2c4)
[ 2.699510] [<c0c00eb4>] (kernel_init_freeable) from [<c083bcac>] (kernel_init+0x8/0x110)
[ 2.708106] [<c083bcac>] (kernel_init) from [<c0107d18>] (ret_from_fork+0x14/0x3c)
[ 2.716217] ---[ end trace 2fc00e213c13ab21 ]---

Fixes: edeec420de24 (cpufreq: dt-cpufreq: platdev Automatically create device with OPP v2)
Signed-off-by: Suniel Mahesh <sunil.m@techveda.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt-platdev: Add some missing platforms to the blacklist

Commit edeec420de24 (cpufreq: dt-platdev: Automatically create cpufreq
device with OPP v2) missed adding few platforms to the blacklist which
create the cpufreq-dt device from their own drivers, after some
dependencies are sorted out.

And for those platforms, both the platform specific driver and the
cpufreq-dt-platdev driver try to create the cpufreq-dt device now.

Fix that by including those platforms in the blacklist. This doesn't include
the TI platforms, for which there is a separate patch.

Fixes: edeec420de24 (cpufreq: dt-cpufreq: platdev Automatically create device with OPP v2)
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt-platdev: Drop few entries from whitelist

Drop few ARM (32 and 64 bit) platforms from the whitelist which always
use "operating-points-v2" property from their DT. They should continue
to work after this patch.

Tested on Hikey platform (only the "hisilicon,hi6220" entry).

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt-platdev: Automatically create cpufreq device with OPP v2

The initial idea of creating the cpufreq-dt-platdev.c file was to keep a
list of platforms that use the "operating-points" (V1) bindings and
create cpufreq device for them only, as we weren't sure which platforms
would want the device to get created automatically as some had their own
cpufreq drivers as well, or wanted to initialize cpufreq after doing
some stuff from platform code.

But that wasn't the case with platforms using "operating-points-v2"
property. We wanted the device to get created automatically without the
need of adding them to the whitelist. Though, we will still have some
exceptions where we don't want to create the device automatically.

Rename the earlier platform list as *whitelist* and create a new
*blacklist* as well.

The cpufreq-dt device will get created if:
- The platform is there in the whitelist OR
- The platform has "operating-points-v2" property in CPU0's DT node and
isn't part of the blacklist .

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: enable the DT cpufreq driver on the Ux500

This enables the generic DT and OPP-based cpufreq driver on the
ST-Ericsson Ux500 series.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add r8a7796 support to to use generic cpufreq driver

This patch adds the r8a7796 support the generic cpufreq driver
by adding an appropriate compat string. This is in keeping
with support for other Renesas ARM and arm64 based SoCs.

Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@rvc.renesas.com>
[simon: new changelog]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: rcar: Add support for R8A7795 SoC

After the commit "a399dc9fc50 cpufreq: shmobile: Use generic platdev
driver", will use cpufreq-dt-platdev driver to enable cpufreq-dt support.
Hence, follow the implementation to support new R8A7795 SoC.

Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@rvc.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add rk3328 compatible to use generic cpufreq driver

This patch adds the rk3328 compatible string for supporting
the generic cpufreq driver on RK3328.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Don't use generic platdev driver for tango

On tango platforms, firmware configures the CPU clock, and Linux is
then only allowed to use the cpu_clk_divider to change the frequency.
Build the OPP table dynamically at init, in order to support whatever
firmware throws at us.

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add zynqmp to the cpufreq dt platdev

Add zynqmp to the cpufreq dt platform device.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add support for hi3660

Add the compatible string for supporting the generic device tree cpufreq-dt
driver on Hisilicon's 3660 SoC.

Signed-off-by: Tao Wang <kevin.wangtao@hisilicon.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Don't use generic platdev driver for ti-cpufreq platforms

Some TI platforms, specifically those in the am33xx, am43xx, dra7xx, and
am57xx families of SoCs can make use of the ti-cpufreq driver to
selectively enable OPPs based on the exact configuration in use. The
ti-cpufreq is given the responsibility of creating the cpufreq-dt
platform device when the driver is in use so drop am33xx and dra7xx
from the cpufreq-dt-platdev driver so it is not created twice.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add support for APM X-Gene 2

Add the compatible string for supporting the generic device tree cpufreq-dt
driver on APM's X-Gene 2 SoC.

Signed-off-by: Hoan Tran <hotran@apm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add support for zx296718

Add the compatible string for supporting the generic cpufreq driver on
the ZTE's zx296718 SoC.

Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add support for r8a7743 and r8a7745

Add the compatible strings for supporting the generic cpufreq driver on
the Renesas RZ/G1M (r8a7743) and RZ/G1E (r8a7745) SoCs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: pxa: use generic platdev driver for device-tree

For device-tree based pxa25x and pxa27x platforms, cpufreq-dt driver is
doing the job as well as pxa2xx-cpufreq, so add these platforms to the
compatibility list.

This won't work for legacy non device-tree platforms where
pxa2xx-cpufreq is still required.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: add Socionext UniPhier SoCs support

Add compatible strings for Pro5, PXs2, LD6b, LD11, LD20 SoCs to use
the generic cpufreq driver.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: enable the DT cpufreq driver on the Integrators

This enables the generic DT and OPP-based cpufreq driver on the
ARM Integrator/AP and Integrator/CP.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: ti: Use generic platdev driver

Now that the cpufreq-dt-platdev is used to create the cpufreq-dt platform
device for all OMAP platforms and the platform code that did it
before has been removed, add ti,am33xx and ti,dra7xx to the machine list
in cpufreq-dt-platdev which had relied on the removed platform code to do
this previously.

Fixes: 7694ca6e1d6f (cpufreq: omap: Use generic platdev driver)
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.7+ <stable@vger.kernel.org> # 4.7+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Support governor tunables per policy

The cpufreq-dt driver is also used for systems with multiple
clock/voltage domains for CPUs, i.e. multiple cpufreq policies in a
system.

And in such cases the platform users may want to enable "governor
tunables per policy". Support that via platform data, as not all users
of the driver would want that behavior.

Reported-by: Juri Lelli <Juri.Lelli@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add support for r8a7792

Add the compatible string for supporting the generic cpufreq driver on
the Renesas R-Car V2H (r8a7792) SoC.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add terminate entry for of_device_id tables

Make sure of_device_id tables are NULL terminated.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Fixes: f56aad1d98f1 (cpufreq: dt: Add generic platform-device creation support)
CC: 4.7+ <stable@vger.kernel.org> # 4.7+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add exynos5433 compatible to use generic cpufreq driver

This patch adds the exynos5433 compatible string for supporting
the generic cpufreq driver on Exynos5433.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: call of_node_put() before error out

If of_match_node() fails, this init function bails out without
calling of_node_put().

Also change of_node_put(of_root) to of_node_put(np); both of them
hold the same pointer, but it seems better to call of_node_put()
against the node returned by of_find_node_by_path().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: tango: Use generic platdev driver

Add tango4 compatible string to the list.

Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: hisilicon: Use generic platdev driver

The cpufreq-dt-platdev driver supports creation of cpufreq-dt platform
device now, reuse that and remove similar code from platform code.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: zynq: Use generic platdev driver

The cpufreq-dt-platdev driver supports creation of cpufreq-dt platform
device now, reuse that and remove similar code from platform code.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: sunxi: Use generic platdev driver

The cpufreq-dt-platdev driver supports creation of cpufreq-dt platform
device now, reuse that and remove similar code from platform code.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: shmobile: Use generic platdev driver

The cpufreq-dt-platdev driver supports creation of cpufreq-dt platform
device now, reuse that and remove similar code from platform code.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: rockchip: Use generic platdev driver

This patch add rockchip's compatible string to the compat list and
remove similar code from platform code for supporting generic platdev
driver.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: omap: Use generic platdev driver

The cpufreq-dt-platdev driver supports creation of cpufreq-dt platform
device now, reuse that and remove similar code from platform code.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: imx: Use generic platdev driver

The cpufreq-dt-platdev driver supports creation of cpufreq-dt platform
device now, reuse that and remove similar code from platform code.

Note that the complete routine imx27_dt_init() is removed as

of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);

has same effect as a NULL .init_machine machine callback pointer.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: berlin: Use generic platdev driver

The cpufreq-dt-platdev driver supports creation of cpufreq-dt platform
device now, reuse that and remove similar code from platform code.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Mark platdev machines array as __initconst

The machines array in cpufreq-dt-platdev is used only once at boot time
and so should be marked with __initconst, so that kernel can free up
memory used for it, if required.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: exynos: Use generic platdev driver

The cpufreq-dt-platdev driver supports creation of cpufreq-dt platform
device now, reuse that and remove similar code from platform code.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

cpufreq: dt: Add generic platform-device creation support

Multiple platforms are using the generic cpufreq-dt driver now, and all
of them are required to create a platform device with name "cpufreq-dt",
in order to get the cpufreq-dt probed.

Many of them do it from platform code, others have special drivers just
to do that.

It would be more sensible to do this at a generic place, where all such
platform can mark their entries.

This patch adds a separate file to get this device created. Currently
the compat list of platforms that we support is empty, and will be
filled in as and when we move platforms to use it.

It always compiles as part of the kernel and so doesn't need a
module-exit operation.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>