From: Mark Brown <broonie@kernel.org>
To: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Cc: lee.jones@linaro.org, sameo@linux.intel.com, lgirdwood@gmail.com,
patches@opensource.wolfsonmicro.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/5] mfd: wm5110: Add delay before releasing reset line on cold boot
Date: Mon, 16 Mar 2015 17:12:32 +0000 [thread overview]
Message-ID: <20150316171232.GU28806@sirena.org.uk> (raw)
In-Reply-To: <1426525124-12317-3-git-send-email-ckeepax@opensource.wolfsonmicro.com>
[-- Attachment #1: Type: text/plain, Size: 490 bytes --]
On Mon, Mar 16, 2015 at 04:58:42PM +0000, Charles Keepax wrote:
> On the first boot of the wm5110 it is important the reset line is held
> for slightly longer to ensure the device starts up well. This patch adds
> a 5mS delay for this.
How can we tell what first boot is - what happens if the device is fully
powered off during system suspend for example? I'd expect to see this
done for system resume as well if we don't know power was maintained (or
whatever else the distinction is).
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 473 bytes --]
next prev parent reply other threads:[~2015-03-16 17:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-16 16:58 [PATCH 1/5] mfd: arizona: Factor out SYSCLK enable from wm5102 hardware patch Charles Keepax
2015-03-16 16:58 ` [PATCH 2/5] mfd: wm5110: Add register patch required for low power sleep Charles Keepax
2015-03-16 16:58 ` [PATCH 3/5] mfd: wm5110: Add delay before releasing reset line on cold boot Charles Keepax
2015-03-16 17:12 ` Mark Brown [this message]
2015-03-16 18:45 ` Charles Keepax
2015-03-16 20:47 ` Mark Brown
2015-03-17 11:50 ` Charles Keepax
2015-03-17 12:04 ` Mark Brown
2015-03-17 13:01 ` Charles Keepax
2015-03-16 16:58 ` [PATCH 4/5] regulator: arizona-ldo1: Add additional supported voltage Charles Keepax
2015-03-16 17:18 ` Mark Brown
2015-03-16 16:58 ` [PATCH 5/5] mfd: wm5110: Set DCVDD voltage to 1.175V before entering sleep mode Charles Keepax
2015-03-16 17:17 ` Mark Brown
2015-03-16 18:28 ` Charles Keepax
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150316171232.GU28806@sirena.org.uk \
--to=broonie@kernel.org \
--cc=ckeepax@opensource.wolfsonmicro.com \
--cc=lee.jones@linaro.org \
--cc=lgirdwood@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=patches@opensource.wolfsonmicro.com \
--cc=sameo@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®