[U-Boot] TI's OMAPL138 and KSZ8876 switch on u-boot

[U-Boot] TI's OMAPL138 and KSZ8876 switch on u-boot

[Andy Ng]

Hello

I am trying to get a u-boot going on OMAPL138 with three port switch
KSZ8873FL, that has one MII port attached to the OMAP and two 10/100BASE-FX
transceivers. Up to now, the ARP packets are going out and received by the
host when doing a tftp download, but the return packets from the host don't
get to the EMAC MII port.
Do I need to perform any configuration on KSZ8873 over I2C or MII in order
to get it going? The u-boot has support for KSZ8873 but it is hard to find
which board has make use of it.

Any ideas how to make the KSZ8873FL going with the u-boot?

Kind regards,
Andreas

[U-Boot] TI's OMAPL138 and KSZ8876 switch on u-boot

[Albert ARIBAUD]

Hi Andy,

On Thu, 14 Mar 2013 23:55:14 +0000, Andy Ng <andreas2025@gmail.com>
wrote:

> Hello
> 
> I am trying to get a u-boot going on OMAPL138 with three port switch
> KSZ8873FL, that has one MII port attached to the OMAP and two 10/100BASE-FX
> transceivers. Up to now, the ARP packets are going out and received by the
> host when doing a tftp download, but the return packets from the host don't
> get to the EMAC MII port.
> Do I need to perform any configuration on KSZ8873 over I2C or MII in order
> to get it going? The u-boot has support for KSZ8873  but it is hard to find
> which board has make use of it.
> 
> Any ideas how to make the KSZ8873FL going with the u-boot?

Apparently there is very little code referring to this switch, and
none that configures it. Your question would be best answered with
the KSZ8873FL datasheet, to see how this switch is configured by
default.

Also, you should compare your hardware's eth and switch configuration
to that of U-boot-supported davinci boards known to use the KSZ8873.

> Kind regards,
> Andreas

Amicalement,
-- 
Albert.

[U-Boot] TI's OMAPL138 and KSZ8876 switch on u-boot

[Andy Ng]

Thank you for your reply. The switch KSZ8873MLL is detectable at the boot
process and the EMAC is getting the ID value
from the phy, as well as the number of the available phys on the switch.
Therefore it is a bit hard to figure out which board is using it in order
to use it as an example.
Does anyone have use KSZ8873MLL in the u-boot? Any assistance will be very
much appreciated.

Best regards,
A


On Fri, Mar 15, 2013 at 6:23 AM, Albert ARIBAUD
<albert.u.boot@aribaud.net>wrote:

> Hi Andy,
>
> On Thu, 14 Mar 2013 23:55:14 +0000, Andy Ng <andreas2025@gmail.com>
> wrote:
>
> > Hello
> >
> > I am trying to get a u-boot going on OMAPL138 with three port switch
> > KSZ8873FL, that has one MII port attached to the OMAP and two
> 10/100BASE-FX
> > transceivers. Up to now, the ARP packets are going out and received by
> the
> > host when doing a tftp download, but the return packets from the host
> don't
> > get to the EMAC MII port.
> > Do I need to perform any configuration on KSZ8873 over I2C or MII in
> order
> > to get it going? The u-boot has support for KSZ8873  but it is hard to
> find
> > which board has make use of it.
> >
> > Any ideas how to make the KSZ8873FL going with the u-boot?
>
> Apparently there is very little code referring to this switch, and
> none that configures it. Your question would be best answered with
> the KSZ8873FL datasheet, to see how this switch is configured by
> default.
>
> Also, you should compare your hardware's eth and switch configuration
> to that of U-boot-supported davinci boards known to use the KSZ8873.
>
> > Kind regards,
> > Andreas
>
> Amicalement,
> --
> Albert.
>