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From: Alexander Aring <alex.aring@gmail.com>
To: Holger Schurig <holgerschurig@gmail.com>
Cc: barebox@lists.infradead.org, gianluca <gianlucarenzi@eurek.it>
Subject: Re: Ethernet PHY KSZ9031 is not working
Date: Wed, 9 Mar 2016 09:58:37 +0100	[thread overview]
Message-ID: <20160309085831.GA1563@omega> (raw)
In-Reply-To: <8737s7ei86.fsf@gmail.com>

Hi,

On Thu, Mar 03, 2016 at 03:42:01PM +0100, Holger Schurig wrote:
> > USB Host-A has to be tested, but if I type:
> >
> >>> usb
> >> USB: scanning bus for devices...
> >> Bus 001 Device 001: ID 0000:0000 EHCI Host Controller
> >> 1 USB Device(s) found
> >
> > so I can suppose the host controller is working.
> 
> I'm unsure if that is correct. When you see the USB IDs of some
> connected devices then you be (a bit) sure(rer).
> 
> 
> > - DDR3 Memory Controller
> > Memtest is passing all tests. So I can suppose the timings are quite
> > good enough to use the Dynamic RAM correctly. I will do a stress test
> > later...
> 
> I had a system once where the memtest in barebox worked, but memtester
> from Linux found issues.
> 

do you know why memtester from Linux found issues?
Maybe we can grab some patterns from [0] and simple do the same what
linux does (inclusive disable caching).


My experience with memtester is:

I saw some people which use memtester under Linux and randomly
"MTD/filesystem broken" messages blobs out while running memtester. I would
guess that the memtester written in some memory mapped area of connected
NAND devices.

- Alex

[0] http://lxr.free-electrons.com/source/mm/memtest.c#L6

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  reply	other threads:[~2016-03-09  8:59 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-03 12:44 gianluca
2016-03-03 13:52 ` Antony Pavlov
2016-03-03 13:47   ` gianluca
2016-03-03 15:21     ` Antony Pavlov
2016-03-04 11:12       ` Ethernet PHY KSZ9031 is not working [SOLVED] gianluca
2016-03-03 14:42 ` Ethernet PHY KSZ9031 is not working Holger Schurig
2016-03-09  8:58   ` Alexander Aring [this message]
2016-03-16 12:34     ` Holger Schurig
2016-03-03 14:53 ` Sascha Hauer

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