diff options
| author | Gunnar Rangoy <gunnar@rangoy.com> | 2009-01-23 12:56:31 +0100 |
|---|---|---|
| committer | Ben Warren <biggerbadderben@gmail.com> | 2009-01-28 23:59:28 -0800 |
| commit | fc01ea1e27d5b124f0a1868d0ce569f156d58dfe (patch) | |
| tree | e50e4cdadf14776e713c0ccd340cc8ba76974c3f /drivers/net | |
| parent | af8626e0c08a780d9ded1d9c4883a89355f60e75 (diff) | |
AVR32: macb - Search for PHY id
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>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | 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 98e8c73ca..af0409bd2 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -317,6 +317,30 @@ 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; @@ -325,6 +349,13 @@ 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) { |