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

From	Laxman Dewangan <ldewangan@nvidia.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based on platform behavior
Date	2016-03-31 20:50 +0200
Message-ID	<riPPj-IR-5@gated-at.bofh.it> (permalink)
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On Friday 01 April 2016 12:01 AM, Mark Brown wrote:
> * PGP Signed by an unknown key
>
> On Thu, Mar 31, 2016 at 11:17:38PM +0530, Laxman Dewangan wrote:
>
>> HW and chip team did simulation with tegra and PMIC and found that the board
>> needs more capacitance then what Vendor recommended for proper signal
>> conditioning on interface. So they put the difference capactitance value and
>> this causes deviation in ramp delay from advertised value. In out design, we
>> measured the ramp time as 50mv/us when PMIC is configured for 100mV/us.
>> So for all settling time, we need to use the ramp as 50mV/us.
>>  From DT, I will provide regulator-ramp-delay as 50mv/us.
>> But I do not have property for saying 100mv/us for PMIC configurations and
>> this is what makes need of 2nd property.
> So the PMIC actually has a setting for the rate you're seeing but for
> some resaon you can't use it?

PMIC has the different rate setting what I am seeing on platform (measured).
HW team measured the ramp dealy with specific configuration of rate 
setting on PMIC which is not default (OTP-One time programmed from Vendor).

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Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Bjorn Andersson <bjorn@kryo.se> - 2016-03-19 05:40 +0100
  Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-19 09:50 +0100
    Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-30 15:50 +0200
      Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-30 20:20 +0200
        Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-31 09:20 +0200
          Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-31 19:00 +0200
            Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-31 19:30 +0200
              Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-31 19:50 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-31 20:00 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-31 20:40 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-31 20:50 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-31 21:00 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-31 21:10 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-31 21:10 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-31 21:30 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-31 22:00 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-03-31 22:50 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-04-01 09:30 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Mark Brown <broonie@kernel.org> - 2016-04-01 18:20 +0200
                Re: [PATCH 1/2] regulator: DT: Add support to scale ramp delay based  on platform behavior Laxman Dewangan <ldewangan@nvidia.com> - 2016-03-31 20:50 +0200

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