eth-phy-uclass.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2001-2015
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
* Joe Hershberger, National Instruments
* Copyright 2017 NXP
*
*/
#include <common.h>
#include <dm.h>
#include <net.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#include <dm/lists.h>
struct eth_phy_device_priv {
struct mii_dev *mdio_bus;
};
int eth_phy_binds_nodes(struct udevice *eth_dev)
{
ofnode mdio_node, phy_node;
const char *node_name;
int ret;
mdio_node = dev_read_subnode(eth_dev, "mdio");
if (!ofnode_valid(mdio_node)) {
debug("%s: %s mdio subnode not found!", __func__,
eth_dev->name);
return -ENXIO;
}
ofnode_for_each_subnode(phy_node, mdio_node) {
node_name = ofnode_get_name(phy_node);
debug("* Found child node: '%s'\n", node_name);
ret = device_bind_driver_to_node(eth_dev, "eth_phy_generic_drv",
node_name, phy_node, NULL);
if (ret) {
debug(" - Eth phy binding error: %d\n", ret);
continue;
}
debug(" - bound phy device: '%s'\n", node_name);
}
return 0;
}
int eth_phy_set_mdio_bus(struct udevice *eth_dev, struct mii_dev *mdio_bus)
{
struct udevice *dev;
for (uclass_first_device(UCLASS_ETH_PHY, &dev);
dev; uclass_next_device(&dev)) {
if (dev->parent == eth_dev) {
struct eth_phy_device_priv *uc_priv = (struct eth_phy_device_priv *)(dev->uclass_priv);
if (uc_priv->mdio_bus == NULL)
uc_priv->mdio_bus = mdio_bus;
}
}
return 0;
}
struct mii_dev * eth_phy_get_mdio_bus(struct udevice *eth_dev)
{
int ret;
struct udevice *phy_dev;
/* Will probe the parent of phy device, then phy device */
ret = uclass_get_device_by_phandle(UCLASS_ETH_PHY, eth_dev, "phy-handle", &phy_dev);
if (!ret) {
if (eth_dev != phy_dev->parent) {
/* phy_dev is shared and controlled by other Eth controller */
struct eth_phy_device_priv *uc_priv = (struct eth_phy_device_priv *)(phy_dev->uclass_priv);
if (uc_priv->mdio_bus)
printf("Get shared mii bus on %s\n", eth_dev->name);
else
printf("Can't get shared mii bus on %s\n", eth_dev->name);
return uc_priv->mdio_bus;
}
} else {
printf("FEC: can't find phy-handle\n");
}
return NULL;
}
int eth_phy_get_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;
}
UCLASS_DRIVER(eth_phy_generic) = {
.id = UCLASS_ETH_PHY,
.name = "eth_phy_generic",
.per_device_auto_alloc_size = sizeof(struct eth_phy_device_priv),
};
U_BOOT_DRIVER(eth_phy_generic_drv) = {
.name = "eth_phy_generic_drv",
.id = UCLASS_ETH_PHY,
};