linux-kernel - Re: [PATCH v14 07/10] mfd: simple-mfd-i2c: Add MAX77705 support

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Message-ID: <20250109120308.GI6763@google.com>
Date: Thu, 9 Jan 2025 12:03:08 +0000
From: Lee Jones <lee@...nel.org>
To: Dzmitry Sankouski <dsankouski@...il.com>
Cc: Sebastian Reichel <sre@...nel.org>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Rob Herring <robh@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Pavel Machek <pavel@....cz>, Hans de Goede <hdegoede@...hat.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>,
	Purism Kernel Team <kernel@...i.sm>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-input@...r.kernel.org, linux-leds@...r.kernel.org
Subject: Re: [PATCH v14 07/10] mfd: simple-mfd-i2c: Add MAX77705 support

On Thu, 09 Jan 2025, Lee Jones wrote:

> On Wed, 08 Jan 2025, Dzmitry Sankouski wrote:
> 
> > Add MAX77705 support - fuel gauge and hwmon devices.
> > Hwmon provides charger input and system bus measurements.
> > 
> > Signed-off-by: Dzmitry Sankouski <dsankouski@...il.com>
> > ---
> > Changes in v13:
> > - remove compatible from cells
> > - change mfd compatible to match max77705 fuel gauge node
> > ---
> >  drivers/mfd/simple-mfd-i2c.c | 11 +++++++++++
> >  1 file changed, 11 insertions(+)
> > 
> > diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c
> > index 6eda79533208..22159913bea0 100644
> > --- a/drivers/mfd/simple-mfd-i2c.c
> > +++ b/drivers/mfd/simple-mfd-i2c.c
> > @@ -83,11 +83,22 @@ static const struct simple_mfd_data maxim_max5970 = {
> >  	.mfd_cell_size = ARRAY_SIZE(max5970_cells),
> >  };
> >  
> > +static const struct mfd_cell max77705_sensor_cells[] = {
> > +	{ .name = "max77705-battery" },
> > +	{ .name = "max77705-hwmon", },
> > +};

Why not register these from the proper MFD driver?

> > +static const struct simple_mfd_data maxim_mon_max77705 = {
> > +	.mfd_cell = max77705_sensor_cells,
> > +	.mfd_cell_size = ARRAY_SIZE(max77705_sensor_cells),
> > +};
> > +
> >  static const struct of_device_id simple_mfd_i2c_of_match[] = {
> >  	{ .compatible = "kontron,sl28cpld" },
> >  	{ .compatible = "silergy,sy7636a", .data = &silergy_sy7636a},
> >  	{ .compatible = "maxim,max5970", .data = &maxim_max5970},
> >  	{ .compatible = "maxim,max5978", .data = &maxim_max5970},
> > +	{ .compatible = "maxim,max77705-battery", .data = &maxim_mon_max77705},
> 
> Drop the battery part from the MFD (group) name please.
> 
> >  	{}
> >  };
> >  MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match);

-- 
Lee Jones [李琼斯]