Now the UCLASS_ETH device "node" field is owerwritten by some network drivers in
case of Ethernet PHYs which are linked to UCLASS_ETH device using
"phy-handle" DT property and when Ethernet PHY driver needs to read some
additional information from DT. In such cases following happens (in
general):
- network drivers
priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev,
priv->interface);
<-- phydev is connected to dev which is UCLASS_ETH device
if (priv->phy_of_handle > 0)
dev_set_of_offset(priv->phydev->dev, priv->phy_of_handle);
<-- phydev->dev->node is overwritten by phy-handle DT node
- PHY driver in .config() callback
int node = dev_of_offset(dev);
<-- PHY driver uses overwritten dev->node
const void *fdt = gd->fdt_blob;
if (fdtdec_get_bool(fdt, node, "property"))
...
As result, UCLASS_ETH device can't be used any more for DT accessing.
This patch adds additional ofnode node field to struct phy_device which can
be set explicitly by network drivers and used by PHY drivers, so
overwriting can be avoided. Also add helper function phy_get_ofnode()
which will check and return phy_device->node or dev_ofnode(phydev->dev) for
backward compatibility with existing drivers.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
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