linux-kernel - [PATCH v2 0/4] add coupled regulators for Exynos5422/5800

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Date:   Mon, 15 Jul 2019 14:04:12 +0200
From:   Kamil Konieczny <k.konieczny@...tner.samsung.com>
To:     k.konieczny@...tner.samsung.com
Cc:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Kukjin Kim <kgene@...nel.org>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Mark Rutland <mark.rutland@....com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Nishanth Menon <nm@...com>, Rob Herring <robh+dt@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Viresh Kumar <vireshk@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: [PATCH v2 0/4] add coupled regulators for Exynos5422/5800

Hi,

The main purpose of this patch series is to add coupled regulators for
Exynos5422/5800 to keep constrain on voltage difference between vdd_arm
and vdd_int to be at most 300mV. In exynos-bus instead of using
regulator_set_voltage_tol() with default voltage tolerance it should be
used regulator_set_voltage_triplet() with volatege range, and this is
already present in opp/core.c code, so it can be reused. While at this,
move setting regulators into opp/core.

This patchset was tested on Odroid XU3.

The last patch depends on two previous.

Changes in v2:

- improve regulators enable/disable code in opp/core as suggested by
  Viresh Kumar
- add new patch for remove unused dt-bindings as suggested by Krzysztof
  Kozlowski

Regards,
Kamil

Kamil Konieczny (3):
  opp: core: add regulators enable and disable
  devfreq: exynos-bus: convert to use dev_pm_opp_set_rate()
  dt-bindings: devfreq: exynos-bus: remove unused property

Marek Szyprowski (1):
  ARM: dts: exynos: add initial data for coupled regulators for
    Exynos5422/5800

 .../bindings/devfreq/exynos-bus.txt           |   2 -
 arch/arm/boot/dts/exynos5420.dtsi             |  34 ++--
 arch/arm/boot/dts/exynos5422-odroid-core.dtsi |   4 +
 arch/arm/boot/dts/exynos5800-peach-pi.dts     |   4 +
 arch/arm/boot/dts/exynos5800.dtsi             |  32 ++--
 drivers/devfreq/exynos-bus.c                  | 172 +++++++-----------
 drivers/opp/core.c                            |  18 +-
 7 files changed, 122 insertions(+), 144 deletions(-)

-- 
2.22.0