From: Matthias Kaehlcke <mka-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
To: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Laxman Dewangan
<ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Liam Girdwood <lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Douglas Anderson
<dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
Brian Norris
<briannorris-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Subject: Re: [PATCH] regulator: Allow for asymmetric settling times
Date: Mon, 1 May 2017 09:42:27 -0700 [thread overview]
Message-ID: <20170501164227.GU128305@google.com> (raw)
In-Reply-To: <20170430123001.iwauodtjkbnmjmsl-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
Hi Mark and Laxman,
thanks for your comments.
El Sun, Apr 30, 2017 at 09:30:01PM +0900 Mark Brown ha dit:
> On Sat, Apr 29, 2017 at 01:32:09PM +0530, Laxman Dewangan wrote:
> > On Saturday 29 April 2017 05:36 AM, Matthias Kaehlcke wrote:
>
> > > -- regulator-settling-time-us: Settling time, in microseconds, for voltage
> > > - change if regulator have the constant time for any level voltage change.
> > > - This is useful when regulator have exponential voltage change.
> > > +- regulator-settling-time-up-us: Settling time, in microseconds, for voltage
> > > + increase if the regulator needs a constant time to settle after voltage
> > > + increases of any level. This is useful for regulators with exponential
> > > + voltage changes.
> > > +- regulator-settling-time-down-us: Settling time, in microseconds, for voltage
> > > + decrease if the regulator needs a constant time to settle after voltage
> > > + decreases of any level. This is useful for regulators with exponential
> > > + voltage changes.
>
> > Can we have regulator-settling-time-us also so if it is there then up/down
> > same.
> > If up/down different then separate properties can be used.
>
> Removing the existing binding would also break existing DTs using it
> which we obviously don't want.
I thought it might be ok in this case since the driver just landed.
> I don't see any reason to even deprecate it, like Laxman says it's
> nice and convenient for people with symmetric performance.
Ok, I was 'concerned' about the redundancy, but if that is not seen as
an issue I'm happy to just add the new properties. I'll send an
updated patch soon.
Thanks
Matthias
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WARNING: multiple messages have this Message-ID (diff)
From: Matthias Kaehlcke <mka@chromium.org>
To: Mark Brown <broonie@kernel.org>
Cc: Laxman Dewangan <ldewangan@nvidia.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
Douglas Anderson <dianders@chromium.org>,
Brian Norris <briannorris@chromium.org>
Subject: Re: [PATCH] regulator: Allow for asymmetric settling times
Date: Mon, 1 May 2017 09:42:27 -0700 [thread overview]
Message-ID: <20170501164227.GU128305@google.com> (raw)
In-Reply-To: <20170430123001.iwauodtjkbnmjmsl@sirena.org.uk>
Hi Mark and Laxman,
thanks for your comments.
El Sun, Apr 30, 2017 at 09:30:01PM +0900 Mark Brown ha dit:
> On Sat, Apr 29, 2017 at 01:32:09PM +0530, Laxman Dewangan wrote:
> > On Saturday 29 April 2017 05:36 AM, Matthias Kaehlcke wrote:
>
> > > -- regulator-settling-time-us: Settling time, in microseconds, for voltage
> > > - change if regulator have the constant time for any level voltage change.
> > > - This is useful when regulator have exponential voltage change.
> > > +- regulator-settling-time-up-us: Settling time, in microseconds, for voltage
> > > + increase if the regulator needs a constant time to settle after voltage
> > > + increases of any level. This is useful for regulators with exponential
> > > + voltage changes.
> > > +- regulator-settling-time-down-us: Settling time, in microseconds, for voltage
> > > + decrease if the regulator needs a constant time to settle after voltage
> > > + decreases of any level. This is useful for regulators with exponential
> > > + voltage changes.
>
> > Can we have regulator-settling-time-us also so if it is there then up/down
> > same.
> > If up/down different then separate properties can be used.
>
> Removing the existing binding would also break existing DTs using it
> which we obviously don't want.
I thought it might be ok in this case since the driver just landed.
> I don't see any reason to even deprecate it, like Laxman says it's
> nice and convenient for people with symmetric performance.
Ok, I was 'concerned' about the redundancy, but if that is not seen as
an issue I'm happy to just add the new properties. I'll send an
updated patch soon.
Thanks
Matthias
next prev parent reply other threads:[~2017-05-01 16:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-29 0:06 [PATCH] regulator: Allow for asymmetric settling times Matthias Kaehlcke
2017-04-29 0:06 ` Matthias Kaehlcke
[not found] ` <20170429000643.56407-1-mka-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2017-04-29 8:02 ` Laxman Dewangan
2017-04-29 8:02 ` Laxman Dewangan
[not found] ` <59044881.7090901-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2017-04-30 12:30 ` Mark Brown
2017-04-30 12:30 ` Mark Brown
[not found] ` <20170430123001.iwauodtjkbnmjmsl-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2017-05-01 16:42 ` Matthias Kaehlcke [this message]
2017-05-01 16:42 ` Matthias Kaehlcke
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