linux-kernel - Re: [PATCH v2 10/10] iio: adc: ad7606: Disable PWM usage for non backend version

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Message-ID: <CAMknhBE51oUjNZVE1mq1xtdOzAG2fpxXW7S+haMGQosdweaZsQ@mail.gmail.com>
Date: Mon, 23 Sep 2024 10:34:51 +0200
From: David Lechner <dlechner@...libre.com>
To: Guillaume Stols <gstols@...libre.com>
Cc: Uwe Kleine-König <ukleinek@...nel.org>, 
	Lars-Peter Clausen <lars@...afoo.de>, Michael Hennerich <Michael.Hennerich@...log.com>, 
	Jonathan Cameron <jic23@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>, 
	Jonathan Corbet <corbet@....net>, Michal Marek <mmarek@...e.com>, linux-pwm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org, 
	linux-iio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-doc@...r.kernel.org, aardelean@...libre.com, jstephan@...libre.com
Subject: Re: [PATCH v2 10/10] iio: adc: ad7606: Disable PWM usage for non
 backend version

On Fri, Sep 20, 2024 at 7:33 PM Guillaume Stols <gstols@...libre.com> wrote:
>
> Since the pwm was introduced before backend, there was an example use
> whit triggered buffers. However, using it may be dangerous, because if

with

> the PWM goes too fast, a new conversion can be triggered before the
> transmission is over, whit the associated mess in the buffers.

with

> Until a solution is found to mitigate this risk, for instante CRC

instance

> support, the PWM will be disabled.
>
> Signed-off-by: Guillaume Stols <gstols@...libre.com>
> ---