[U-Boot] [PATCH v2 6/9] AVR32: macb - Search for PHY id

[Ben Warren <biggerbadderben@gmail.com>]

Gunnar Rangoy wrote:
> This patch adds support for searching through available PHY-addresses in
> the macb-driver. This is needed for the ATEVK1100 evaluation board,
> where the PHY-address will be initialized to either 1 or 7.
>
> This patch adds a config option, CONFIG_MACB_SEARCH_PHY, which when
> enabled tells the driver to search for the PHY address.
>
> Signed-off-by: Gunnar Rangoy <gunnar@rangoy.com>
> Signed-off-by: Paul Driveklepp <pauldriveklepp@gmail.com>
> Signed-off-by: Olav Morken <olavmrk@gmail.com>
> ---
>  drivers/net/macb.c |   31 +++++++++++++++++++++++++++++++
>  1 files changed, 31 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/net/macb.c b/drivers/net/macb.c
> index d47a052..c8beb82 100644
> --- a/drivers/net/macb.c
> +++ b/drivers/net/macb.c
> @@ -327,6 +327,30 @@ static void macb_phy_reset(struct macb_device *macb)
>  		       netdev->name, status);
>  }
>  
> +#ifdef CONFIG_MACB_SEARCH_PHY
> +static int macb_phy_find(struct macb_device *macb)
> +{
> +	int i;
> +	u16 phy_id;
> +
> +	/* Search for PHY... */
> +	for (i = 0; i < 32; i++) {
> +		macb->phy_addr = i;
> +		phy_id = macb_mdio_read(macb, MII_PHYSID1);
> +		if (phy_id != 0xffff) {
> +			printf("%s: PHY present at %d\n", macb->netdev.name, i);
> +			return 1;
> +		}
> +	}
> +
> +	/* PHY isn't up to snuff */
> +	printf("%s: PHY not found", macb->netdev.name);
> +
> +	return 0;
> +}
> +#endif /* CONFIG_MACB_SEARCH_PHY */
> +
> +
>  static int macb_phy_init(struct macb_device *macb)
>  {
>  	struct eth_device *netdev = &macb->netdev;
> @@ -335,6 +359,13 @@ static int macb_phy_init(struct macb_device *macb)
>  	int media, speed, duplex;
>  	int i;
>  
> +#ifdef CONFIG_MACB_SEARCH_PHY
> +	/* Auto-detect phy_addr */
> +	if (!macb_phy_find(macb)) {
> +		return 0;
> +	}
> +#endif /* CONFIG_MACB_SEARCH_PHY */
> +
>  	/* Check if the PHY is up to snuff... */
>  	phy_id = macb_mdio_read(macb, MII_PHYSID1);
>  	if (phy_id == 0xffff) {
>   
Added to net repo.

thanks,
Ben