linux-kernel - [PATCH 0/3] regulator: misc fixes

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Date: Thu, 16 May 2024 11:52:44 +0300
From: Matti Vaittinen <mazziesaccount@...il.com>
To: Matti Vaittinen <mazziesaccount@...il.com>,
	Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc: Matti Vaittinen <mazziesaccount@...il.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] regulator: misc fixes

This series adds couple of a bit unrelated fixes/improvements which I
implemented while working to support yet another ROHM PMIC.

Patch1 addresses a potential problem where the voltage selector for
pickable-ranges is used in same fashion as a 'apply-bit'. Eg, when a
regulator voltage is changed so that also the range changes, the effect
of the range and voltage selector change is not taken into account until
the voltage selector is written to hardware. In such case caching the
voltage-selector value will cause the voltage range change to not change
the actual output voltage.

Patch2 is a fix to ROHM bd71818 and bd71879 low-power state specific
voltage settings where some of the voltages were common to many states.
The old behaviour was that changing voltage for one state caused it to
change for all states. This had a potential impact of accidentally
changing the runtime voltage when trying to configure voltage for a
low-power state, potentially hurting the boot-up process.

Patch3 is just a minor print improvement to help pinpointing unsupported
voltage in device-tree.

Series is based on v6.9

---

Matti Vaittinen (3):
  regulator: don't cache vsel to ensure voltage setting
  regulator: bd71828: Don't overwrite runtime voltages
  regulator: rohm-regulator: warn if unsupported voltage is set

 drivers/regulator/bd71828-regulator.c | 58 +--------------------------
 drivers/regulator/helpers.c           | 10 ++++-
 drivers/regulator/rohm-regulator.c    |  4 ++
 3 files changed, 14 insertions(+), 58 deletions(-)

base-commit: a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6
-- 
2.44.0

-- 
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =] 

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