From: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: Karsten Merker <merker-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Cc: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
dev-3kdeTeqwOZ9EV1b7eY7vFQ@public.gmane.org
Subject: Re: [PATCH V2 1/1] ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator
Date: Wed, 12 Nov 2014 14:37:27 +0100 [thread overview]
Message-ID: <20141112133727.GO14919@lukather> (raw)
In-Reply-To: <1415746906-20835-2-git-send-email-merker-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 1034 bytes --]
On Wed, Nov 12, 2014 at 12:01:46AM +0100, Karsten Merker wrote:
> On the LeMaker Banana Pi, probing the external ethernet PHY connected
> to the SoC's internal GMAC module sometimes fails. The PHY power
> supply is handled via a GPIO-controlled regulator, and the existing
> regulator startup-delay of 50000us is too short to make sure that the
> PHY is always fully powered up when it is queried by phylib. Tests
> have shown that to provide a reliable PHY detection, the startup-delay
> has to be increased to at least 60000us. To have a certain safety margin
> and to cater for manufacturing variations between different boards,
> the delay gets set to 100000us as discussed on the linux-arm-kernel
> mailinglist.
>
> Signed-off-by: Karsten Merker <merker-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
> Acked-by: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Merged, thanks.
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
prev parent reply other threads:[~2014-11-12 13:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-09 13:28 [PATCH] ARM: dts: Fix failing ethernet PHY detection on the LeMaker Banana Pi Karsten Merker
[not found] ` <1415539714-7652-1-git-send-email-merker-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
2014-11-09 13:28 ` [PATCH] ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator Karsten Merker
[not found] ` <1415539714-7652-2-git-send-email-merker-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
2014-11-09 21:05 ` Hans de Goede
[not found] ` <545FD716.5060305-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-11-11 17:34 ` Maxime Ripard
2014-11-11 18:35 ` Hans de Goede
2014-11-11 23:01 ` [PATCH V2 0/1] ARM: dts: Fix failing ethernet PHY detection on the LeMaker Banana Pi Karsten Merker
[not found] ` <1415746906-20835-1-git-send-email-merker-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
2014-11-11 23:01 ` [PATCH V2 1/1] ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator Karsten Merker
[not found] ` <1415746906-20835-2-git-send-email-merker-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
2014-11-12 13:37 ` Maxime Ripard [this message]
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=20141112133727.GO14919@lukather \
--to=maxime.ripard-wi1+55scjutkeb57/3fjtnbpr1lh4cv8@public.gmane.org \
--cc=dev-3kdeTeqwOZ9EV1b7eY7vFQ@public.gmane.org \
--cc=devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org \
--cc=linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org \
--cc=merker-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org \
/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;
as well as URLs for NNTP newsgroup(s).