[U-Boot-Users] EMAC2 & EMAC3 operation on PPC 440GX
Travis B. Sawyer
tsawyer+u-boot at sandburst.com
Wed Jun 22 14:27:40 CEST 2005
David Grab wrote:
> Hello,
>
> as mentioned before i´m using two Marvel 88E1111 PHY on my PPC440GX Board.
> They are configured as a RGMII to copper interface for use with EMAC 2 & 3.
> So now i´m in trouble with the configuration of the network. After booting i
> set with "setenv ethact ppc_440x_eth2" EMAC2 for networking. After that i
> try a "ping" to know if network is working. Reading the speed and duplex
> from PHY works, but after that i got in an endless loop. I figured out, that
> no interrupt is recognized and in 440gx_enet.c in ppc_440x_eth_init the
> default configuration of the interrupt handler is for ETH0:
>
> irq_install_handler (VECNUM_EWU0 + (hw_p->devnum * 2),
> (interrupt_handler_t *) enetInt, dev);
> irq_install_handler (VECNUM_ETH0 + (hw_p->devnum * 2),
> (interrupt_handler_t *) enetInt, dev);
>
> so i changed it as following...
>
> irq_install_handler (VECNUM_EWU2 + (hw_p->devnum * 2),
> (interrupt_handler_t *) enetInt, dev);
> irq_install_handler (VECNUM_ETH2 + (hw_p->devnum * 2),
> (interrupt_handler_t *) enetInt, dev);
You shouldn't need to do this. I have 3 different boards that work fine
with emac2 & emac3.
>
> and added in vecnum.h these lines:
>
> #define VECNUM_ETH2 (64 + 0) /* Ethernet 0 interrupt status */
> #define VECNUM_EWU2 (64 + 1) /* Ethernet 0 wakeup */
>
> But this didn´t solve the problem. Actually i also couldn´t get the TxCLK
> work on my RGMII Bridge and i don´t know why.
I saw the note yesterday about the etch length. The hw guys didn't want
to route the 13" of extra etch so I whack a reg in our phy to tell it
to skew the clock.
-travis
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