[PATCH v4 0/5] add coupled regulators for Exynos5422/5800

[k . konieczny]

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 DTS coupled regulators patch depends on previous patches.

Changes:
v4:
- removed "opp: core: add regulators enable and disable" from patchset
  as it was applied by Viresh Kumar and changed cover letter
- fix patch "devfreq: exynos-bus: correct clock enable sequence" to
  correct order of enable/disable
- removed unrelated changes in "devfreq: exynos-bus: convert to use
  dev_pm_opp_set_rate()"
- added new patch "devfreq: exynos-bus: remove exynos_bus_passive_target()"
  as suggested by Chanwoo Choi
v3:
- added new exynos-bus patch to correct clock and regulator enabling
  and disabling sequence as suggested by Chanwoo Choi
- corrected error path in enable and improved commit message in opp/core
- improve comment in devfreq/exynos-bus.c before devfreq_recommended_opp()
- change cover letter as there is new patch
- added note before Signed-off-by in 4th patch
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

Kamil Konieczny (4):
  devfreq: exynos-bus: correct clock enable sequence
  devfreq: exynos-bus: convert to use dev_pm_opp_set_rate()
  dt-bindings: devfreq: exynos-bus: remove unused property
  devfreq: exynos-bus: remove exynos_bus_passive_target()

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                  | 153 +++++-------------
 6 files changed, 78 insertions(+), 151 deletions(-)

-- 
2.22.0