1 // SPDX-License-Identifier: GPL-2.0+
3 * Driver for Broadcom 63xx SOCs integrated PHYs
5 #include "bcm-phy-lib.h"
6 #include <linux/module.h>
9 #define MII_BCM63XX_IR 0x1a /* interrupt register */
10 #define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */
11 #define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */
12 #define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */
13 #define MII_BCM63XX_IR_LINK 0x0200 /* link changed */
14 #define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */
16 MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
18 MODULE_LICENSE("GPL");
20 static int bcm63xx_config_intr(struct phy_device *phydev)
24 reg = phy_read(phydev, MII_BCM63XX_IR);
28 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
29 reg &= ~MII_BCM63XX_IR_GMASK;
31 reg |= MII_BCM63XX_IR_GMASK;
33 err = phy_write(phydev, MII_BCM63XX_IR, reg);
37 static int bcm63xx_config_init(struct phy_device *phydev)
41 /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
42 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->supported);
44 reg = phy_read(phydev, MII_BCM63XX_IR);
48 /* Mask interrupts globally. */
49 reg |= MII_BCM63XX_IR_GMASK;
50 err = phy_write(phydev, MII_BCM63XX_IR, reg);
54 /* Unmask events we are interested in */
55 reg = ~(MII_BCM63XX_IR_DUPLEX |
56 MII_BCM63XX_IR_SPEED |
57 MII_BCM63XX_IR_LINK) |
59 return phy_write(phydev, MII_BCM63XX_IR, reg);
62 static struct phy_driver bcm63xx_driver[] = {
65 .phy_id_mask = 0xfffffc00,
66 .name = "Broadcom BCM63XX (1)",
67 /* PHY_BASIC_FEATURES */
68 .flags = PHY_IS_INTERNAL,
69 .config_init = bcm63xx_config_init,
70 .ack_interrupt = bcm_phy_ack_intr,
71 .config_intr = bcm63xx_config_intr,
73 /* same phy as above, with just a different OUI */
75 .phy_id_mask = 0xfffffc00,
76 .name = "Broadcom BCM63XX (2)",
77 /* PHY_BASIC_FEATURES */
78 .flags = PHY_IS_INTERNAL,
79 .config_init = bcm63xx_config_init,
80 .ack_interrupt = bcm_phy_ack_intr,
81 .config_intr = bcm63xx_config_intr,
84 module_phy_driver(bcm63xx_driver);
86 static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
87 { 0x00406000, 0xfffffc00 },
88 { 0x002bdc00, 0xfffffc00 },
92 MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);