Re: [Arm-netbook] small exynos5 pc (ARM Cortex A15, 2gb RAM)

To: peter green <plugwash@p10link.net>
Cc: Linux on small ARM machines <arm-netbook@lists.phcomp.co.uk>, ARM <debian-arm@lists.debian.org>
Subject: Re: [Arm-netbook] small exynos5 pc (ARM Cortex A15, 2gb RAM)
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 2 Nov 2012 11:53:33 +0000
Message-id: <[🔎] CAPweEDwNuT1ibWrXF_kFkRSXRx7BKXB8c2_hoh4o8a+U73C5FQ@mail.gmail.com>
In-reply-to: <50902B24.3070200@p10link.net>
References: <CAPweEDya1S0v47rr_8QSKduQE39PaA-ShnJPPRjwSqOpKhM32Q@mail.gmail.com> <50902B24.3070200@p10link.net>

On Tue, Oct 30, 2012 at 7:31 PM, peter green <plugwash@p10link.net> wrote:

>
> *I find it strange that the CPU document available for
> download from the seller's site mentions built in ethernet
> but the arndaleboard doesn't use it instead using a USB
> hub with ethernet chip can you shed any light on this?

 ok this may just be an error in the documentation.  apparently the
Exynos5 doesn't have built-in ethernet.  if however it has a similar
General-Purpose Memory Bus (similar to TI's HPI) just like the S3C6410
does, then chances are you could put things like DM9000s directly
attached to it.  DM9000 Ethernet PHYs have 2 modes - MII and also an
8-bit parallel data/address bus mode.  i'm sure that there are
10/100/1000 Ethernet PHYs out there with 16-bit interfaces.

 all rather odd, though.  anyway, the arndaleboard uses USB-ETH rather
than GPMB PHYs.

l.

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