linux-kernel - Re: [PATCH RESEND v6 00/17] Support ROHM BD72720 PMIC

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Message-ID: <20260109093831.GB1118061@google.com>
Date: Fri, 9 Jan 2026 09:38:31 +0000
From: Lee Jones <lee@...nel.org>
To: Matti Vaittinen <mazziesaccount@...il.com>
Cc: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
	Pavel Machek <pavel@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Sebastian Reichel <sre@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, Linus Walleij <linusw@...nel.org>,
	Bartosz Golaszewski <brgl@...nel.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-clk@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-rtc@...r.kernel.org, Andreas Kemnade <andreas@...nade.info>
Subject: Re: [PATCH RESEND v6 00/17] Support ROHM BD72720 PMIC

Sebastian,

  Any thoughts?

Matti,

  If Sebastian doesn't reply, I can execute your plan next week.

On Fri, 09 Jan 2026, Matti Vaittinen wrote:
> On 08/01/2026 19:27, Lee Jones wrote:
> > On Mon, 15 Dec 2025, Matti Vaittinen wrote:
> > 
> > > Resending the v6
> > > 
> > > Series is same as v6 _except_ being rebased on v6.19-rc1 - and adding rb
> > > tags which were replied to v6.
> > > 
> > > The ROHM BD72720 is a new power management IC for portable, battery
> > > powered devices. It integrates 10 BUCKs and 11 LDOs, RTC, charger, LEDs,
> > > GPIOs and a clock gate. To me the BD72720 seems like a successor to the
> > > BD71828 and BD71815 PMICs.
> > > 
> > > This series depends on
> > > 5bff79dad20a ("power: supply: Add bd718(15/28/78) charger driver")
> > > which is in power-supply tree, for-next. Thus, the series is based on
> > > it.
> > > 
> > > The testing since v4 has suffered some hardware-issues after I
> > > accidentally enabled charging while the PMIC's battery pin was connected
> > > to the I/O domain. Some heat was generated, not terribly lot smoke
> > > though...
> > > 
> > > After the incident I've had occasional I2C failures. I, however, suspect
> > > the root cause is HW damage in I/O lines.
> > > 
> > > Revision history:
> > >    v6 resend:
> > >    - Rebased on v6.19-rc1 and collected rb-tags from v6.
> > > 
> > >    v5 => v6:
> > >    - MFD fixes as suggested by Lee
> > >      - Styling mostly
> > >      - New patch to Fix comment style for MFD driver
> > >    More accurate changelog in individual patches
> > > 
> > >    v4 => v5:
> > >    - dt-binding fixes as discussed in v4 reviews.
> > >      - Drop rohm,vdr-battery.yaml and add vdr properties to battery.yaml
> > >      - Drop 'rohm,' -vendor-prefix from vdr properties
> > >    - Link to v4:
> > >      https://lore.kernel.org/all/cover.1763022807.git.mazziesaccount@gmail.com/
> > >    More accurate changelog in individual patches
> > > 
> > >    v3 => v4:
> > >    - dt-binding fixes to the BD72720 MFD example and regulator bindings
> > >    More accurate changelog in individual patches
> > > 
> > >    v2 => v3:
> > >    - rebased to power-supply/for-next as dependencies are merged to there
> > >    - plenty of dt-binding changes as suggested by reviewers
> > >    - add new patch to better document existing 'trickle-charging' property
> > >    More accurate changelog in individual patches
> > > 
> > >    RFCv1 => v2:
> > >    - Drop RFC status
> > >    - Use stacked regmaps to hide secondary map from the sub-drivers
> > >    - Quite a few styling fixes and improvements as suggested by
> > >      reviewers. More accurate changelog in individual patches.
> > >    - Link to v1:
> > >      https://lore.kernel.org/all/cover.1759824376.git.mazziesaccount@gmail.com/
> > > 
> > > ---
> > > 
> > > Matti Vaittinen (17):
> > >    dt-bindings: regulator: ROHM BD72720
> > >    dt-bindings: battery: Clarify trickle-charge
> > >    dt-bindings: battery: Add trickle-charge upper limit
> > >    dt-bindings: battery: Voltage drop properties
> > >    dt-bindings: mfd: ROHM BD72720
> > >    dt-bindings: leds: bd72720: Add BD72720
> > >    mfd: rohm-bd71828: Use regmap_reg_range()
> > >    mfd: rohm-bd71828: Use standard file header format
> > >    mfd: rohm-bd71828: Support ROHM BD72720
> > >    regulator: bd71828: rename IC specific entities
> > >    regulator: bd71828: Support ROHM BD72720
> > >    gpio: Support ROHM BD72720 gpios
> > >    clk: clk-bd718x7: Support BD72720 clk gate
> > >    rtc: bd70528: Support BD72720 rtc
> > >    power: supply: bd71828: Support wider register addresses
> > >    power: supply: bd71828-power: Support ROHM BD72720
> > >    MAINTAINERS: Add ROHM BD72720 PMIC
> > > 
> > >   .../bindings/leds/rohm,bd71828-leds.yaml      |    7 +-
> > >   .../bindings/mfd/rohm,bd72720-pmic.yaml       |  339 ++++++
> > >   .../bindings/power/supply/battery.yaml        |   33 +-
> > >   .../regulator/rohm,bd72720-regulator.yaml     |  148 +++
> > >   MAINTAINERS                                   |    2 +
> > >   drivers/clk/Kconfig                           |    4 +-
> > >   drivers/clk/clk-bd718x7.c                     |   10 +-
> > >   drivers/gpio/Kconfig                          |    9 +
> > >   drivers/gpio/Makefile                         |    1 +
> > >   drivers/gpio/gpio-bd72720.c                   |  281 +++++
> > >   drivers/mfd/Kconfig                           |   18 +-
> > >   drivers/mfd/rohm-bd71828.c                    |  555 ++++++++-
> > >   drivers/power/supply/bd71828-power.c          |  160 ++-
> > >   drivers/regulator/Kconfig                     |    8 +-
> > >   drivers/regulator/bd71828-regulator.c         | 1025 ++++++++++++++++-
> > >   drivers/rtc/Kconfig                           |    3 +-
> > >   drivers/rtc/rtc-bd70528.c                     |   21 +-
> > >   include/linux/mfd/rohm-bd72720.h              |  634 ++++++++++
> > >   include/linux/mfd/rohm-generic.h              |    1 +
> > >   19 files changed, 3127 insertions(+), 132 deletions(-)
> > >   create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd72720-pmic.yaml
> > >   create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd72720-regulator.yaml
> > >   create mode 100644 drivers/gpio/gpio-bd72720.c
> > >   create mode 100644 include/linux/mfd/rohm-bd72720.h
> > 
> > The MFD parts LGTM.
> 
> Thanks Lee!
> 
> > What Acks are you waiting on?  What's the merge strategy?
> 
> I think everything else has been acked by maintainers, except the
> power-supply parts. I think those have only been looked at by Andreas and
> Linus W. Haven't heard anything from Sebastian :(
> 
> I would love to see the patches 1 - 14 and 17 to be merged (via MFD?). I
> could then re-spin the 15 and 16 to limited audience as I hope Sebastian had
> time to take a look at them. However, I don't think any of the other patches
> in the series depend on the last .
> 
> Yours,
>  -- Matti.
> 
> 
> ---
> Matti Vaittinen
> Linux kernel developer at ROHM Semiconductors
> Oulu Finland
> 
> ~~ When things go utterly wrong vim users can always type :help! ~~

-- 
Lee Jones [李琼斯]