From mboxrd@z Thu Jan 1 00:00:00 1970 From: hdegoede@redhat.com (Hans de Goede) Date: Sun, 09 Nov 2014 22:05:26 +0100 Subject: [PATCH] ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator In-Reply-To: <1415539714-7652-2-git-send-email-merker@debian.org> References: <1415539714-7652-1-git-send-email-merker@debian.org> <1415539714-7652-2-git-send-email-merker@debian.org> Message-ID: <545FD716.5060305@redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.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 Regards, Hans