Середа, 16 липня 2014 р. 17:38:45 UTC+3 користувач Hans de Goede написав:
> Hi,
> 
> 
> 
> On 07/16/2014 02:56 PM, [email protected] wrote:
> 
> > Hi,
> 
> > I have evaluation board from Olimex (A20-SOM) and I try connect second PHY 
> > to emac port (GPIO PH08-PH11, PH14-PH27). First gmac bloc use together with 
> > A20-SOM-EVB expansion board to A20-SOM.
> 
> > 
> 
> > Sunxi linux find two gmac blocks, but both dont work (network cable 
> > disconnected).
> 
> > 
> 
> > What could be the reason?
> 
> > 
> 
> > I have 2 variants:
> 
> > 1. A20 in only one MAC block that can be connected to different interfaces 
> > (RGMII/MII) to external PHY. 
> 
> > 2. If MAC block two, there is no implementation in the Sunxi Linux of their 
> > simultaneous operation.
> 
> > 
> 
> > Can someone to explain?
> 
> 
> 
> AFAIK their is one GMAC and one EMAC (so 100mbit only) block in the A20, at 
> least
> 
> the EMAC may be routed to an alternative set of io-pins iirc. So with a proper
> 
> dts file + a 100 mbit mii phy wired to the alternative io-pins you should be 
> able
> 
> to run with 2 nics.
> 
> 
> 
> Regards,
> 
> 
> 
> Hans


Thanks, Hans, for the answer.
It confirms my assumption.

So in Sunxi Linux is no implementation for second MAC. And system fault init 
and use eth interface.

Can someone realized use GMAC and EMAC together?
Can someone give advice or source code?

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