[v2,0/8] regulator: axp20x: Stop AXP209 from crashing when enabling LDO3

Message

Priit Laes Dec. 11, 2018, 3:17 p.m. UTC

This is a second edition of a series that implements voltage
ramping for AXP209 DCDC2 and LDO3 regulators and software
based soft-start for AXP209 LDO3 regulator.

Both features are needed to work around a PMIC shutdown when
toggling LDO3 on certain boards with high capacitance on the
LDO3 output.

Similar features (or workarounds) have been also implemented
on u-boot side [1].

Changes since v1:
- Rebased on top of next and dropped already merged patches.
- Dropped LDO4 full range devicetree change for Lime2 (prev patch 9)
  in favor of general pin-bank regulator dependency [2].
- Fixed paths in devicetree bindings (patch 3)
- Added note about software based soft-start for LDO3 (patch 5)

[1] https://lists.denx.de/pipermail/u-boot/2018-November/348612.html
[2] http://lists.infradead.org/pipermail/linux-arm-kernel/2018-December/618459.html

Olliver Schinagl (8):
  mfd: axp20x: name voltage ramping define properly
  regulator: axp20x: add support for set_ramp_delay for AXP209
  dt-bindings: mfd: axp20x: add support for regulator-ramp-delay for AXP209
  regulator: axp20x: add software based soft_start for AXP209 LDO3
  dt-bindings: mfd: axp20x: Add software based soft_start for AXP209 LDO3
  regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2
  mfd: axp20x: Clean up included headers
  mfd: axp20x: use explicit bit defines

 Documentation/devicetree/bindings/mfd/axp20x.txt |   9 +-
 arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts  |   2 +-
 drivers/mfd/axp20x.c                             |  13 +-
 drivers/regulator/axp20x-regulator.c             | 142 +++++++++++++++-
 include/linux/mfd/axp20x.h                       |   4 +-
 5 files changed, 161 insertions(+), 9 deletions(-)

base-commit: 14cf8c1d5b90a0cf6a8ba51ef59db8da8c7a2622