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AVR32: macb - Search for PHY id

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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>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Gunnar Rangoy 2009-01-23 12:56:31 +01:00 • committed by Ben Warren
parent af8626e0c0
commit fc01ea1e27
1 changed files with 31 additions and 0 deletions
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31
drivers/net/macb.c
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@ -317,6 +317,30 @@ static void macb_phy_reset(struct macb_device *macb)
netdev->name, status); 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) static int macb_phy_init(struct macb_device *macb)
{ {
struct eth_device *netdev = &macb->netdev; struct eth_device *netdev = &macb->netdev;
@ -325,6 +349,13 @@ static int macb_phy_init(struct macb_device *macb)
int media, speed, duplex; int media, speed, duplex;
int i; 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... */ /* Check if the PHY is up to snuff... */
phy_id = macb_mdio_read(macb, MII_PHYSID1); phy_id = macb_mdio_read(macb, MII_PHYSID1);
if (phy_id == 0xffff) { if (phy_id == 0xffff) {