linux-kernel - Re: [PATCH v2 1/2] dt-bindings: trivial-devices: add ltp8800

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Message-ID: <20241106-overcast-yummy-9c6462ff2640@spud>
Date: Wed, 6 Nov 2024 16:11:13 +0000
From: Conor Dooley <conor@...nel.org>
To: Guenter Roeck <linux@...ck-us.net>
Cc: Cedric Encarnacion <cedricjustine.encarnacion@...log.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-i2c@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-hwmon@...r.kernel.org, Jean Delvare <jdelvare@...e.com>,
	Jonathan Corbet <corbet@....net>,
	Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Peter Yin <peteryin.openbmc@...il.com>,
	Noah Wang <noahwang.wang@...look.com>, Marek Vasut <marex@...x.de>,
	Lukas Wunner <lukas@...ner.de>
Subject: Re: [PATCH v2 1/2] dt-bindings: trivial-devices: add ltp8800

On Wed, Nov 06, 2024 at 04:06:02PM +0000, Conor Dooley wrote:
> On Tue, Nov 05, 2024 at 08:34:01PM -0800, Guenter Roeck wrote:
> > On 11/5/24 19:09, Cedric Encarnacion wrote:
> > > Add Analog Devices LTP8800-1A, LTP8800-2, and LTP8800-4A DC/DC μModule
> > > regulator.
> 
> A single compatible for 3 devices is highly suspect. What is
> different between these devices?

Additionally, looking at one of the datasheets, this has several inputs
that could be controlled by a GPIO, a clock input and several supply
inputs. It also has a regulator output. I don't think it is suitable for
trivial-devices.yaml.

> 
> > > 
> > > Signed-off-by: Cedric Encarnacion <cedricjustine.encarnacion@...log.com>
> > > ---
> > >   Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++
> > >   MAINTAINERS                                            | 5 +++++
> > >   2 files changed, 7 insertions(+)
> > > 
> > > diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
> > > index 90a7c0a3dc48..72877d00b8dd 100644
> > > --- a/Documentation/devicetree/bindings/trivial-devices.yaml
> > > +++ b/Documentation/devicetree/bindings/trivial-devices.yaml
> > > @@ -43,6 +43,8 @@ properties:
> > >             - adi,adp5589
> > >               # Analog Devices LT7182S Dual Channel 6A, 20V PolyPhase Step-Down Silent Switcher
> > >             - adi,lt7182s
> > > +            # Analog Devices LTP8800-1A/-2/-4A 150A/135A/200A, 54V DC/DC μModule regulator
> > > +          - adi,ltp8800
> > >               # AMS iAQ-Core VOC Sensor
> > >             - ams,iaq-core
> > >               # Temperature monitoring of Astera Labs PT5161L PCIe retimer
> > > diff --git a/MAINTAINERS b/MAINTAINERS
> > > index 7c357800519a..6ca691500fb7 100644
> > > --- a/MAINTAINERS
> > > +++ b/MAINTAINERS
> > > @@ -13555,6 +13555,11 @@ S:	Maintained
> > >   F:	Documentation/devicetree/bindings/iio/light/liteon,ltr390.yaml
> > >   F:	drivers/iio/light/ltr390.c
> > > +LTP8800 HARDWARE MONITOR DRIVER
> > > +M:	Cedric Encarnacion <cedricjustine.encarnacion@...log.com>
> > > +L:	linux-hwmon@...r.kernel.org
> > > +S:	Supported
> > > +
> > 
> > This entry doesn't make sense in this patch.
> > 
> > Guenter
> > 
> > >   LYNX 28G SERDES PHY DRIVER
> > >   M:	Ioana Ciornei <ioana.ciornei@....com>
> > >   L:	netdev@...r.kernel.org
> > 



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