1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Driver for Analog Devices, Inc. ADIN1140 10BASE-T1S PHY
*
* Copyright 2026 Analog Devices Inc.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/phy.h>
#define ADIN1140_PHY_ID 0x0283be00
#define ADIN1140_PCS_CTRL 0x08f3
#define ADIN1140_PCS_CTRL_LOOPBACK BIT(14)
static int adin1140_config_aneg(struct phy_device *phydev)
{
/* phylib tries to clear BIT(12) in MDIO_CTRL1, since AN is disabled.
* However, on the ADIN1140, that field is non-standard, being used
* to control the reset status of the PHY (thus it needs to remain set).
*/
return 0;
}
static int adin1140_loopback(struct phy_device *phydev, bool enable, int speed)
{
if (enable && speed)
return -EOPNOTSUPP;
return phy_modify_mmd(phydev, MDIO_MMD_PCS, ADIN1140_PCS_CTRL,
ADIN1140_PCS_CTRL_LOOPBACK,
enable ? ADIN1140_PCS_CTRL_LOOPBACK : 0);
}
static int adin1140_read_status(struct phy_device *phydev)
{
phydev->link = 1;
phydev->duplex = DUPLEX_HALF;
phydev->speed = SPEED_10;
phydev->autoneg = AUTONEG_DISABLE;
return 0;
}
static struct phy_driver adin1140_driver[] = {
{
PHY_ID_MATCH_EXACT(ADIN1140_PHY_ID),
.name = "ADIN1140_PHY",
.features = PHY_BASIC_T1S_P2MP_FEATURES,
.read_status = adin1140_read_status,
.config_aneg = adin1140_config_aneg,
.set_loopback = adin1140_loopback,
.read_mmd = genphy_read_mmd_c45,
.write_mmd = genphy_write_mmd_c45,
.get_plca_cfg = genphy_c45_plca_get_cfg,
.set_plca_cfg = genphy_c45_plca_set_cfg,
.get_plca_status = genphy_c45_plca_get_status,
},
};
module_phy_driver(adin1140_driver);
static const struct mdio_device_id __maybe_unused adin1140_tbl[] = {
{ PHY_ID_MATCH_EXACT(ADIN1140_PHY_ID) },
{ }
};
MODULE_DEVICE_TABLE(mdio, adin1140_tbl);
MODULE_DESCRIPTION("Analog Devices, Inc. ADIN1140 10BASE-T1S PHY");
MODULE_AUTHOR("Ciprian Regus <ciprian.regus@analog.com>");
MODULE_LICENSE("GPL");
|
