linux-kernel - Re: [PATCH v3] net: phy: workaround for buggy cable detection by LAN8700 after cable plugging

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Date:	Mon, 17 Aug 2015 14:28:34 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	plyatov@...il.com
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	f.fainelli@...il.com, joe@...ches.com, luwei.zhou@...escale.com,
	richardcochran@...il.com, u.kleine-koenig@...gutronix.de,
	Fabio.Estevam@...escale.com, LW@...O-electronics.de,
	Frank.Li@...escale.com, mhei@...mpold.de
Subject: Re: [PATCH v3] net: phy: workaround for buggy cable detection by
 LAN8700 after cable plugging

From: Igor Plyatov <plyatov@...il.com>
Date: Fri, 14 Aug 2015 20:11:02 +0300

> * Due to HW bug, LAN8700 sometimes does not detect presence of energy in the
>   Ethernet cable in Energy Detect Power-Down mode (e.g while EDPWRDOWN bit is
>   set, the ENERGYON bit does not asserted sometimes). This is a common bug of
>   LAN87xx family of PHY chips.
> * The lan87xx_read_status() was improved to acquire ENERGYON bit. Its previous
>   algorythm still not reliable on 100 % and sometimes skip cable plugging.
> 
> Signed-off-by: Igor Plyatov <plyatov@...il.com>

Applied, thanks.
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