1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Fixed-Link phy
4 *
5 * Copyright 2017 Bernecker & Rainer Industrieelektronik GmbH
6 */
7
8 #include <config.h>
9 #include <common.h>
10 #include <malloc.h>
11 #include <phy.h>
12 #include <dm.h>
13 #include <fdt_support.h>
14 #include <asm/global_data.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17
fixedphy_probe(struct phy_device * phydev)18 int fixedphy_probe(struct phy_device *phydev)
19 {
20 struct fixed_link *priv;
21 int ofnode = phydev->addr;
22 u32 val;
23
24 /* check for mandatory properties within fixed-link node */
25 val = fdt_getprop_u32_default_node(gd->fdt_blob,
26 ofnode, 0, "speed", 0);
27 if (val != SPEED_10 && val != SPEED_100 && val != SPEED_1000 &&
28 val != SPEED_2500 && val != SPEED_10000) {
29 printf("ERROR: no/invalid speed given in fixed-link node!");
30 return -EINVAL;
31 }
32
33 priv = malloc(sizeof(*priv));
34 if (!priv)
35 return -ENOMEM;
36 memset(priv, 0, sizeof(*priv));
37
38 phydev->priv = priv;
39
40 priv->link_speed = val;
41 priv->duplex = fdtdec_get_bool(gd->fdt_blob, ofnode, "full-duplex");
42 priv->pause = fdtdec_get_bool(gd->fdt_blob, ofnode, "pause");
43 priv->asym_pause = fdtdec_get_bool(gd->fdt_blob, ofnode, "asym-pause");
44
45 /* fixed-link phy must not be reset by core phy code */
46 phydev->flags |= PHY_FLAG_BROKEN_RESET;
47
48 return 0;
49 }
50
fixedphy_startup(struct phy_device * phydev)51 int fixedphy_startup(struct phy_device *phydev)
52 {
53 struct fixed_link *priv = phydev->priv;
54
55 phydev->asym_pause = priv->asym_pause;
56 phydev->pause = priv->pause;
57 phydev->duplex = priv->duplex;
58 phydev->speed = priv->link_speed;
59 phydev->link = 1;
60
61 return 0;
62 }
63
fixedphy_shutdown(struct phy_device * phydev)64 int fixedphy_shutdown(struct phy_device *phydev)
65 {
66 return 0;
67 }
68
69 static struct phy_driver fixedphy_driver = {
70 .uid = PHY_FIXED_ID,
71 .mask = 0xffffffff,
72 .name = "Fixed PHY",
73 .features = PHY_GBIT_FEATURES | SUPPORTED_MII,
74 .probe = fixedphy_probe,
75 .startup = fixedphy_startup,
76 .shutdown = fixedphy_shutdown,
77 };
78
phy_fixed_init(void)79 int phy_fixed_init(void)
80 {
81 phy_register(&fixedphy_driver);
82 return 0;
83 }
84