From: hdegoede@redhat.com (Hans de Goede)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator
Date: Sun, 09 Nov 2014 22:05:26 +0100 [thread overview]
Message-ID: <545FD716.5060305@redhat.com> (raw)
In-Reply-To: <1415539714-7652-2-git-send-email-merker@debian.org>
Hi,
On 11/09/2014 02:28 PM, 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. To
> guarantee a reliable PHY detection, the startup-delay has to be
> increased to 60000us.
We should probably just increase it to 100000us to be safe, otherwise:
Acked-by: Hans de Goede <hdegoede@redhat.com>
Regards,
Hans
next prev parent reply other threads:[~2014-11-09 21:05 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
2014-11-09 13:28 ` [PATCH] ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator Karsten Merker
2014-11-09 21:05 ` Hans de Goede [this message]
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
2014-11-11 23:01 ` [PATCH V2 1/1] ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator Karsten Merker
2014-11-12 13:37 ` Maxime Ripard
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