From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: "Romain Gantois" <romain.gantois@bootlin.com>,
"Liam Girdwood" <lgirdwood@gmail.com>,
"Mark Brown" <broonie@kernel.org>,
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Subject: Re: [PATCH v4 0/6] Add support for the LTM8054 voltage regulator
Date: Mon, 24 Nov 2025 17:07:33 +0200 [thread overview]
Message-ID: <aSR0tcV0ULNYvf7t@smile.fi.intel.com> (raw)
In-Reply-To: <24527d76-4f6a-4008-a369-23510d492a94@roeck-us.net>
On Mon, Nov 24, 2025 at 06:57:41AM -0800, Guenter Roeck wrote:
> On 11/24/25 06:48, Romain Gantois wrote:
> >
> > This is version four of my series which adds initial support of the Linear
> > Technology LTM8054 voltage regulator. The driver supports a fixed voltage
> > and a tunable output current limit using a DAC-controlled pin.
> >
> > I'd say that the most unusual part of this series is the usage of the IIO
> > consumer API in a regulator driver. I think this makes sense here, since
> > the regulator driver has to access a DAC to read/set the output current
> > limit.
>
> I don't think that is a valid reason. Literally every driver measuring voltages
> or current uses a DAC to do it. How else would one convert an analog value
> into a digital value ?
While I'm not objecting your vision on this, the ADC is also possible to use to
"measure" the analog signal. DAC approach IIRC considered cheaper solution, but
require an analogue comparator.
--
With Best Regards,
Andy Shevchenko
--
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy
next prev parent reply other threads:[~2025-11-24 15:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-24 14:48 [PATCH v4 0/6] Add support for the LTM8054 voltage regulator Romain Gantois
2025-11-24 14:48 ` [PATCH v4 2/6] iio: inkern: Use namespaced exports Romain Gantois
2025-11-24 14:57 ` [PATCH v4 0/6] Add support for the LTM8054 voltage regulator Guenter Roeck
2025-11-24 15:07 ` Andy Shevchenko [this message]
[not found] ` <23111366.EfDdHjke4D@fw-rgant>
2025-11-24 15:35 ` H. Nikolaus Schaller
[not found] ` <4053840.MHq7AAxBmi@fw-rgant>
2025-11-24 16:19 ` H. Nikolaus Schaller
2025-11-25 8:49 ` Romain Gantois
[not found] ` <3021060.e9J7NaK4W3@fw-rgant>
2025-11-25 10:25 ` H. Nikolaus Schaller
2025-11-25 16:37 ` Guenter Roeck
2025-12-07 18:48 ` Jonathan Cameron
2025-11-27 15:06 ` Romain Gantois
2025-11-24 15:40 ` Guenter Roeck
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