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Enable FEC driver to retrieve PHY address from device tree

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Currently if we have more than one phy on the MDIO bus, we do not have a
good mechanism for determining which should be used at runtime. Enable the
FEC driver to determine the address for the PHY from the device tree.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Martyn Welch 2018-12-11 11:34:45 +00:00 committed by Stefano Babic
parent b2ca8907d9
commit 774ec60b74
1 changed files with 21 additions and 0 deletions
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21
drivers/net/fec_mxc.c
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@ -1264,11 +1264,32 @@ static const struct eth_ops fecmxc_ops = {
.read_rom_hwaddr = fecmxc_read_rom_hwaddr,
};
static int device_get_phy_addr(struct udevice *dev)
{
struct ofnode_phandle_args phandle_args;
int reg;
if (dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
&phandle_args)) {
debug("Failed to find phy-handle");
return -ENODEV;
}
reg = ofnode_read_u32_default(phandle_args.node, "reg", 0);
return reg;
}
static int fec_phy_init(struct fec_priv *priv, struct udevice *dev)
{
struct phy_device *phydev;
int addr;
int mask = 0xffffffff;
addr = device_get_phy_addr(dev);
if (addr >= 0)
mask = 1 << addr;
#ifdef CONFIG_FEC_MXC_PHYADDR
mask = 1 << CONFIG_FEC_MXC_PHYADDR;
#endif