Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based on platform behavior

From	Mark Brown <broonie@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based on platform behavior
Date	2016-03-02 05:40 +0100
Message-ID	<r86JQ-2xU-5@gated-at.bofh.it> (permalink)
References	(1 earlier) <r7A7h-67h-21@gated-at.bofh.it> <r7IRc-3lp-7@gated-at.bofh.it> <r7JNg-44r-5@gated-at.bofh.it> <r85NL-1Xc-9@gated-at.bofh.it> <r85Xs-20z-5@gated-at.bofh.it>
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On Wed, Mar 02, 2016 at 09:05:26AM +0530, Laxman Dewangan wrote:
> On Wednesday 02 March 2016 09:08 AM, Mark Brown wrote:

> >You're not trying to scale the value here, you're trying to replace the
> >value because the PMIC is incapable of delivering the advertised ramp
> >rate.  Trying to express this as a multiple of the advertised ramp rate
> >is just adding complexity.

> So should we provide absolute ramp value here for platform specific?

Yes, otherwise if the PMIC vendor respecifies their ramp rates to
reflect reality and the driver is updated then your DT will be broken.

> Or any other suggestion to handle this situation as this is very common and
> almost all our boards have this slowness on ramp.

Perhaps time to have a chat with your PMIC vendors...

Thread

[PATCH 1/2] regulator: DT: Add support to scale ramp delay based on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-02-29 16:00 +0100
  [PATCH 2/2] regulator: Add support to scale ramp delay based on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-02-29 16:00 +0100
  Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Bjorn Andersson <bjorn.andersson@linaro.org> - 2016-02-29 18:50 +0100
    Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-01 04:10 +0100
      Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-01 05:10 +0100
        Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-02 04:40 +0100
          Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-02 04:50 +0100
            Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-02 05:40 +0100
              Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-02 07:30 +0100

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