net: macb: Add phy address to read it from device tree
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>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 0c2ac81..2225b33 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -531,6 +531,12 @@
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;
@@ -1311,6 +1317,7 @@
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct macb_device *macb = dev_get_priv(dev);
+ struct ofnode_phandle_args phandle_args;
const char *phy_mode;
int ret;
@@ -1323,6 +1330,12 @@
return -EINVAL;
}
+ /* Read phyaddr from DT */
+ if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
+ &phandle_args))
+ macb->phy_addr = ofnode_read_u32_default(phandle_args.node,
+ "reg", -1);
+
macb->regs = (void *)pdata->iobase;
macb->is_big_endian = (cpu_to_be32(0x12345678) == 0x12345678);