[U-Boot] [PATCH 1/1] fsl_qspi: Pet the watchdog while reading/writing

From: Alexander Stein <alexander.stein@systec-electronic.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/1] fsl_qspi: Pet the watchdog while reading/writing
Date: Mon, 07 Dec 2015 07:35:15 +0100	[thread overview]
Message-ID: <9354800.gX2YRd6Q1J@ws-stein> (raw)
In-Reply-To: <CAOMZO5AByJw9E73t83PcN8_K4hT1aSLe=Zv25v5ZrJ-BDHbUtg@mail.gmail.com>

Hi Fabio,

On Friday 04 December 2015 18:54:15, Fabio Estevam wrote:
> On Wed, Nov 4, 2015 at 6:19 AM, Alexander Stein
> <alexander.stein@systec-electronic.com> wrote:
> > When reading a large blob. e.g. a linux kernel (several MiBs) a watchdog
> > timeout might occur meanwhile. So pet the watchdog while operating on
> > the flash.
> 
> I guess the same problem would occur when you do long file transfers
> via TFTP, via USB, via eMMC, right?

I didn't notice this problem with TFTP which takes ~3s. I don't have the opportunity to use USB oder eMMC on this hardware.

> Shouldn't you fix the watchdog timeout value instead? If I read this
> thread correctly you set the watchdog timeout to be 1.5 s, which seems
> to be too low.

You might be right, but there absolutely no way to change that timeout. It's _fixed_ in hardware. If you can't serve it, you got reset. It's that simple, no matter what.

Best regards,
Alexander
-- 
Dipl.-Inf. Alexander Stein
SYS TEC electronic GmbH
alexander.stein at systec-electronic.com

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