linux-kernel - Re: [PATCH 3/8] mmc: tegra: Implement HS400 enhanced strobe

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Message-ID: <20180809134754.GE21639@ulmo>
Date:   Thu, 9 Aug 2018 15:47:54 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Aapo Vienamo <avienamo@...dia.com>
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Mikko Perttunen <mperttunen@...dia.com>,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/8] mmc: tegra: Implement HS400 enhanced strobe

On Thu, Aug 09, 2018 at 03:22:54PM +0300, Aapo Vienamo wrote:
> On Thu, 9 Aug 2018 13:43:45 +0200
> Thierry Reding <thierry.reding@...il.com> wrote:
> 
> > On Tue, Aug 07, 2018 at 04:59:59PM +0300, Aapo Vienamo wrote:
> > > Implement HS400 enhanced strobe.  
> > 
> > Can you provide a little more information about what the impact is of
> > this? Does this increase throughput? How much?
> 
> The eMMC enhanced strobe is a mechanism that can be used instead of the
> HS400 tuning procedure. Note that the delay line calibration implemented
> later on in this series is Tegra specific and has to be performed
> regardless of which type of HS400 tuning mechanism is used.

Sounds like a variation of that would be good material for the commit
message.

Thierry

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