On 6/20/24 17:38, Lee Jones wrote:

On Fri, 14 Jun 2024, Matti Vaittinen wrote:

quoted

Support ROHM BD96801 Scalable PMIC

The ROHM BD96801 is automotive grade PMIC, intended to be usable in
multiple solutions. The BD96801 can be used as a stand-alone, or together
with separate 'companion PMICs'. This modular approach aims to make this
PMIC suitable for various use-cases.

This series brings only limited support. The more complete set of
features was sent in the RFC:
https://lore.kernel.org/lkml/cover.1712058690.git.mazziesaccount@gmail.com/ (local)

The v3: implemented also support for ERRB interrupt and setting a name
suffix to IRQ domains. That work was postponed and will be continued
after some unrelated changes to irqdomain code are completed as
discussed here:
https://lore.kernel.org/all/87plst28yk.ffs@tglx/ (local)

Revision history still tries to summarize changes from the RFC for the
reviewers.

Revision history:
v3 => v4:
  - Drop patches 7 to 10 (inclusive) until preparatory irqdomain changes
    are done.
  - Cleanups as suggested by Lee.
	- Change the regulator subdevice name. (MFD and regulators).
	- Minor styling in MFD driver

v2 => v3: Mostly based on feedback from Thomas Gleixner
	- Added acks from Krzysztof and Mark
	- Rebased on v6.10-rc2
	- Drop name suffix support for legacy IRQ domains (both
	  irqdomain and regmap)
	- Improve the commit message for patch 7/10

v1 => v2:
	- Add support for setting a name suffix for fwnode backed IRQ domains.
	- Add support for setting a domain name suffix for regmap-IRQ.
	- Add handling of ERRB IRQs.
	- Small fixes based on feedback.

RFCv2 => v1:
	- Drop ERRB IRQ from drivers (but not DT bindings).
	- Drop configuration which requires STBY - state.
	- Fix the register lock race by moving it from the regulator
	  driver to the MFD driver.

RFCv1 => RFCv2:
	- Tidying code based on feedback form Krzysztof Kozlowski and
	  Lee Jones.
	- Documented undocumented watchdog related DT properties.
	- Added usage of the watchdog IRQ.
	- Use irq_domain_update_bus_token() to work-around debugFS name
	  collision for IRQ domains.

---


Matti Vaittinen (6):
   dt-bindings: ROHM BD96801 PMIC regulators
   dt-bindings: mfd: bd96801 PMIC core
   mfd: support ROHM BD96801 PMIC core
   regulator: bd96801: ROHM BD96801 PMIC regulators
   watchdog: ROHM BD96801 PMIC WDG driver
   MAINTAINERS: Add ROHM BD96801 'scalable PMIC' entries

  .../bindings/mfd/rohm,bd96801-pmic.yaml       | 173 ++++
  .../regulator/rohm,bd96801-regulator.yaml     |  63 ++
  MAINTAINERS                                   |   4 +
  drivers/mfd/Kconfig                           |  13 +
  drivers/mfd/Makefile                          |   1 +
  drivers/mfd/rohm-bd96801.c                    | 273 ++++++
  drivers/regulator/Kconfig                     |  12 +
  drivers/regulator/Makefile                    |   2 +
  drivers/regulator/bd96801-regulator.c         | 908 ++++++++++++++++++
  drivers/watchdog/Kconfig                      |  13 +
  drivers/watchdog/Makefile                     |   1 +
  drivers/watchdog/bd96801_wdt.c                | 416 ++++++++
  include/linux/mfd/rohm-bd96801.h              | 215 +++++
  include/linux/mfd/rohm-generic.h              |   1 +
  14 files changed, 2095 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd96801-pmic.yaml
  create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd96801-regulator.yaml
  create mode 100644 drivers/mfd/rohm-bd96801.c
  create mode 100644 drivers/regulator/bd96801-regulator.c
  create mode 100644 drivers/watchdog/bd96801_wdt.c
  create mode 100644 include/linux/mfd/rohm-bd96801.h

allmodconfig and allyesconfig builds fail with:

   make[5]: *** No rule to make target 'drivers/regulator/da903x.o', needed by 'drivers/regulator/built-in.a'.
   make[5]: Target 'drivers/regulator/' not remade because of errors.

Bummer!

There is unrelated change in the Makefile. I must've messed up a rebase! 
Sorry! I'll send new version with corrected Makefile - latest early next 
week. (I suppose new version is appropriate instead of a follow-up as 
this breaks the build).

Thanks for the heads-up Lee!

Yours,
	-- Matti

-- 
Matti Vaittinen
Linux kernel developer at ROHM Semiconductors
Oulu Finland

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