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Date:	Sun, 29 Mar 2015 13:41:01 -0700 (PDT)
From:	David Miller <>
Subject: Re: [PATCH] net: fec: setup right value for mdio hold time

From: Uwe Kleine-König <>
Date: Fri, 27 Mar 2015 11:08:32 +0100

> The FEC modules used on i.MX28 and newer have a register to tune the MDIO
> output hold time that should be at least 10 ns. Up to now this value was not
> explicitly set and so resulted in less hold time if the fec clock was
> faster than 100 MHz.
> This was noticed on an i.MX28 machine that uses an input clock of ~150
> Mhz which resulted in unreliable communication with a Marvell switch.
> Signed-off-by: Uwe Kleine-König <>

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