From: Stephen Warren <swarren@wwwdotorg.org>
To: Tim Kryger <tim.kryger@gmail.com>, Bjorn Andersson <bjorn@kryo.se>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
Alexandre Courbot <acourbot@nvidia.com>,
Sachin Kamat <spk.linux@gmail.com>,
linux-mmc <linux-mmc@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Alexandre Courbot <gnurou@gmail.com>
Subject: Re: Possible regression with commit 52221610d
Date: Tue, 16 Dec 2014 11:46:52 -0700 [thread overview]
Message-ID: <54907E1C.10300@wwwdotorg.org> (raw)
In-Reply-To: <CAD7vxxJaCdKiG9h_32OUSUkQMQk6AAwi6d0v01KEnSVTF8cN1w@mail.gmail.com>
On 12/14/2014 09:48 PM, Tim Kryger wrote:
> On Sat, Dec 13, 2014 at 11:22 PM, Bjorn Andersson <bjorn@kryo.se> wrote:
...
>> Or simply; what is vmmc (in the code) supposed to represent?
>
> Hi Bjorn,
>
> VMMC is the supply that delivers power out to the SD card itself (aka VDD).
>
> It is not the internal power rail/power domain of the host controller
> within the SoC.
I've seen this question come up quite a few times.
Should Documentation/devicetree/bindings/mmc/mmc.txt document the
vmmc/vqmmc regulators? I assume they're considered shared across all
MMC/SDHCI controller bindings?
Since that only covers DT, it might be nice to document vmmc-vs-vqmmc
somewhere else too, such as right by the devm_regulator_get_optional()
calls in mmc_regulator_get_supply() in drivers/mmc/core/core.c.
prev parent reply other threads:[~2014-12-16 18:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-04 3:05 Possible regression with commit 52221610d Alexandre Courbot
2014-11-04 5:28 ` Tim Kryger
2014-11-04 9:00 ` Alexandre Courbot
2014-11-04 15:31 ` Tim Kryger
2014-11-05 8:10 ` Alexandre Courbot
2014-11-05 15:27 ` Tim Kryger
2014-11-06 2:15 ` Alexandre Courbot
2014-12-14 7:22 ` Bjorn Andersson
2014-12-15 4:48 ` Tim Kryger
2014-12-16 6:27 ` Bjorn Andersson
2014-12-16 18:18 ` Bjorn Andersson
2014-12-17 6:20 ` Tim Kryger
2014-12-17 19:57 ` Bjorn Andersson
2014-12-22 3:01 ` Tim Kryger
2015-01-05 19:52 ` Bjorn Andersson
2015-01-12 10:31 ` Ulf Hansson
2015-01-13 16:00 ` Tim Kryger
2015-01-13 15:59 ` Tim Kryger
2015-01-14 5:00 ` Tim Kryger
2014-12-16 18:46 ` Stephen Warren [this message]
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