Read phy address from device tree and use it to find the phy device if not found then search in the range of 0 to 31.
Signed-off-by: Padmarao Begari padmarao.begari@microchip.com --- drivers/net/macb.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index e0e86a274e..7f592d510c 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -477,6 +477,12 @@ static int macb_phy_find(struct macb_device *macb, const char *name) int i; u16 phy_id;
+ phy_id = macb_mdio_read(macb, macb->phy_addr, MII_PHYSID1); + if (phy_id != 0xffff) { + printf("%s: PHY present at %d\n", name, macb->phy_addr); + return 0; + } + /* Search for PHY... */ for (i = 0; i < 32; i++) { macb->phy_addr = i; @@ -1256,6 +1262,8 @@ static int macb_eth_probe(struct udevice *dev) struct macb_device *macb = dev_get_priv(dev); const char *phy_mode; int ret; + u32 phy_addr; + ofnode node;
phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode", NULL); @@ -1266,6 +1274,13 @@ static int macb_eth_probe(struct udevice *dev) return -EINVAL; }
+ /* Look for a PHY node under the Ethernet node */ + node = dev_read_subnode(dev, "ethernet-phy"); + if (ofnode_valid(node)) { + ofnode_read_u32(node, "reg", &phy_addr); + macb->phy_addr = phy_addr; + } + macb->regs = (void *)pdata->iobase;
macb->is_big_endian = (cpu_to_be32(0x12345678) == 0x12345678);