[U-Boot-Users] PATCH: add support for MII-connected ethernet switch for IPX42x

[Jean-Christophe PLAGNIOL-VILLARD]

On 16:34 Sat 10 Nov     , Michael Schwingen wrote:
> Hi,
> 
> the following patch adds support for an ethernet switch that is connected to
> the MII port. In that case, there is no PHY with which auto-negotiation can
> be done, and the MII port always runs in full-duplex 100MBit/s mode.
> 
> Signed-off-by: Michael Schwingen <michael at schwingen.org>
> 
> diff --git a/cpu/ixp/npe/npe.c b/cpu/ixp/npe/npe.c
> index 7e4af44..88d0183 100644
> --- a/cpu/ixp/npe/npe.c
> +++ b/cpu/ixp/npe/npe.c
> @@ -361,6 +361,10 @@ static int npe_init(struct eth_device *dev, bd_t * bis)
>  
>  	debug("%s: 1\n", __FUNCTION__);
>  
> +#ifdef CONFIG_MII_ETHSWITCH
> +	speed = _100BASET;
> +	duplex = FULL;
> +#else
>  	miiphy_read (dev->name, p_npe->phy_no, PHY_BMSR, &reg_short);
>  
>  	/*
> @@ -396,6 +400,7 @@ static int npe_init(struct eth_device *dev, bd_t * bis)
>  		printf ("ENET Speed is %d Mbps - %s duplex connection\n",
>  			(int) speed, (duplex == HALF) ? "HALF" : "FULL");
>  	}
> +#endif
>  
>  	npe_alloc_end = npe_alloc_pool + sizeof(npe_alloc_pool);
>  	npe_alloc_free = (u8 *)(((unsigned)npe_alloc_pool +

Hi,

	If you have a switch between your phy and your cpu the speed and
	the duplex must be specified by the phy driver.

	The best way is to add a function that request the phy status
	and do not wait the phy autonegociation like done in the kernel
	by read_status callback and it's implementation
	genphy_read_status.

Best Regards,
J.