1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0+
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright 2020 NXP
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <common.h>
7*4882a593Smuzhiyun #include <dm.h>
8*4882a593Smuzhiyun #include <net.h>
9*4882a593Smuzhiyun #include <dm/device-internal.h>
10*4882a593Smuzhiyun #include <dm/uclass-internal.h>
11*4882a593Smuzhiyun #include <dm/lists.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun struct eth_phy_device_priv {
14*4882a593Smuzhiyun struct mii_dev *mdio_bus;
15*4882a593Smuzhiyun };
16*4882a593Smuzhiyun
eth_phy_binds_nodes(struct udevice * eth_dev)17*4882a593Smuzhiyun int eth_phy_binds_nodes(struct udevice *eth_dev)
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun ofnode mdio_node, phy_node;
20*4882a593Smuzhiyun const char *node_name;
21*4882a593Smuzhiyun int ret;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun mdio_node = dev_read_subnode(eth_dev, "mdio");
24*4882a593Smuzhiyun if (!ofnode_valid(mdio_node)) {
25*4882a593Smuzhiyun debug("%s: %s mdio subnode not found!", __func__,
26*4882a593Smuzhiyun eth_dev->name);
27*4882a593Smuzhiyun return -ENXIO;
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun ofnode_for_each_subnode(phy_node, mdio_node) {
31*4882a593Smuzhiyun node_name = ofnode_get_name(phy_node);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun debug("* Found child node: '%s'\n", node_name);
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun ret = device_bind_driver_to_node(eth_dev,
36*4882a593Smuzhiyun "eth_phy_generic_drv",
37*4882a593Smuzhiyun node_name, phy_node, NULL);
38*4882a593Smuzhiyun if (ret) {
39*4882a593Smuzhiyun debug(" - Eth phy binding error: %d\n", ret);
40*4882a593Smuzhiyun continue;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun debug(" - bound phy device: '%s'\n", node_name);
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun return 0;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
eth_phy_set_mdio_bus(struct udevice * eth_dev,struct mii_dev * mdio_bus)49*4882a593Smuzhiyun int eth_phy_set_mdio_bus(struct udevice *eth_dev, struct mii_dev *mdio_bus)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun struct udevice *dev;
52*4882a593Smuzhiyun struct eth_phy_device_priv *uc_priv;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun for (uclass_first_device(UCLASS_ETH_PHY, &dev); dev;
55*4882a593Smuzhiyun uclass_next_device(&dev)) {
56*4882a593Smuzhiyun if (dev->parent == eth_dev) {
57*4882a593Smuzhiyun uc_priv = (struct eth_phy_device_priv *)(dev->uclass_priv);
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun if (!uc_priv->mdio_bus)
60*4882a593Smuzhiyun uc_priv->mdio_bus = mdio_bus;
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun return 0;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
eth_phy_get_mdio_bus(struct udevice * eth_dev)67*4882a593Smuzhiyun struct mii_dev *eth_phy_get_mdio_bus(struct udevice *eth_dev)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun int ret;
70*4882a593Smuzhiyun struct udevice *phy_dev;
71*4882a593Smuzhiyun struct eth_phy_device_priv *uc_priv;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun /* Will probe the parent of phy device, then phy device */
74*4882a593Smuzhiyun ret = uclass_get_device_by_phandle(UCLASS_ETH_PHY, eth_dev,
75*4882a593Smuzhiyun "phy-handle", &phy_dev);
76*4882a593Smuzhiyun if (!ret) {
77*4882a593Smuzhiyun if (eth_dev != phy_dev->parent) {
78*4882a593Smuzhiyun /*
79*4882a593Smuzhiyun * phy_dev is shared and controlled by
80*4882a593Smuzhiyun * other eth controller
81*4882a593Smuzhiyun */
82*4882a593Smuzhiyun uc_priv = (struct eth_phy_device_priv *)(phy_dev->uclass_priv);
83*4882a593Smuzhiyun if (uc_priv->mdio_bus)
84*4882a593Smuzhiyun printf("Get shared mii bus on %s\n", eth_dev->name);
85*4882a593Smuzhiyun else
86*4882a593Smuzhiyun printf("Can't get shared mii bus on %s\n", eth_dev->name);
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun return uc_priv->mdio_bus;
89*4882a593Smuzhiyun }
90*4882a593Smuzhiyun } else {
91*4882a593Smuzhiyun printf("FEC: can't find phy-handle\n");
92*4882a593Smuzhiyun }
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun return NULL;
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun
eth_phy_get_addr(struct udevice * dev)97*4882a593Smuzhiyun int eth_phy_get_addr(struct udevice *dev)
98*4882a593Smuzhiyun {
99*4882a593Smuzhiyun struct ofnode_phandle_args phandle_args;
100*4882a593Smuzhiyun int reg;
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun if (dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
103*4882a593Smuzhiyun &phandle_args)) {
104*4882a593Smuzhiyun debug("Failed to find phy-handle");
105*4882a593Smuzhiyun return -ENODEV;
106*4882a593Smuzhiyun }
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun reg = ofnode_read_u32_default(phandle_args.node, "reg", 0);
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun return reg;
111*4882a593Smuzhiyun }
112*4882a593Smuzhiyun
113*4882a593Smuzhiyun UCLASS_DRIVER(eth_phy_generic) = {
114*4882a593Smuzhiyun .id = UCLASS_ETH_PHY,
115*4882a593Smuzhiyun .name = "eth_phy_generic",
116*4882a593Smuzhiyun .per_device_auto_alloc_size = sizeof(struct eth_phy_device_priv),
117*4882a593Smuzhiyun };
118*4882a593Smuzhiyun
119*4882a593Smuzhiyun U_BOOT_DRIVER(eth_phy_generic_drv) = {
120*4882a593Smuzhiyun .name = "eth_phy_generic_drv",
121*4882a593Smuzhiyun .id = UCLASS_ETH_PHY,
122*4882a593Smuzhiyun };
123