]> Git Repo - u-boot.git/blob - drivers/net/phy/ca_phy.c
Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"
[u-boot.git] / drivers / net / phy / ca_phy.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Cortina CS4315/CS4340 10G PHY drivers
4  *
5  * Copyright 2014 Freescale Semiconductor, Inc.
6  * Copyright 2018 NXP
7  *
8  */
9
10 #include <config.h>
11 #include <log.h>
12 #include <malloc.h>
13 #include <linux/ctype.h>
14 #include <linux/delay.h>
15 #include <linux/string.h>
16 #include <linux/err.h>
17 #include <phy.h>
18
19 #define PHY_ID_RTL8211_EXT      0x001cc910
20 #define PHY_ID_RTL8211_INT      0x001cc980
21 #define PHY_ID_MASK             0xFFFFFFF0
22
23 static void __internal_phy_init(struct phy_device *phydev, int reset_phy)
24 {
25         u8 phy_addr;
26         u16 data;
27
28         /* should initialize 4 GPHYs at once */
29         for (phy_addr = 4; phy_addr > 0; phy_addr--) {
30                 phydev->addr = phy_addr;
31                 phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0BC6);
32                 phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x0053);
33                 phy_write(phydev, MDIO_DEVAD_NONE, 18, 0x4003);
34                 phy_write(phydev, MDIO_DEVAD_NONE, 22, 0x7e01);
35                 phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0A42);
36                 phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0A40);
37                 phy_write(phydev, MDIO_DEVAD_NONE, 0, 0x1140);
38         }
39
40         /* workaround to fix GPHY fail */
41         for (phy_addr = 1; phy_addr < 5; phy_addr++) {
42                 /* Clear clock fail interrupt */
43                 phydev->addr = phy_addr;
44                 phy_write(phydev, MDIO_DEVAD_NONE, 31, 0xB90);
45                 data = phy_read(phydev, MDIO_DEVAD_NONE, 19);
46                 if (data == 0x10) {
47                         phy_write(phydev, MDIO_DEVAD_NONE, 31, 0xB90);
48                         data = phy_read(phydev, MDIO_DEVAD_NONE, 19);
49                         printf("%s: read again.\n", __func__);
50                 }
51
52                 printf("%s: phy_addr=%d, read register 19, value=0x%x\n",
53                        __func__, phy_addr, data);
54         }
55 }
56
57 static void __external_phy_init(struct phy_device *phydev, int reset_phy)
58 {
59         u16 val;
60
61         /* Disable response PHYAD=0 function of RTL8211 series PHY */
62         /* REG31 write 0x0007, set to extension page */
63         phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0007);
64
65         /* REG30 write 0x002C, set to extension page 44 */
66         phy_write(phydev, MDIO_DEVAD_NONE, 30, 0x002C);
67
68         /*
69          * REG27 write bit[2] = 0 disable response PHYAD = 0 function.
70          * we should read REG27 and clear bit[2], and write back
71          */
72         val = phy_read(phydev, MDIO_DEVAD_NONE, 27);
73         val &= ~(1 << 2);
74         phy_write(phydev, MDIO_DEVAD_NONE, 27, val);
75
76         /* REG31 write 0X0000, back to page0 */
77         phy_write(phydev, MDIO_DEVAD_NONE, 31, 0x0000);
78 }
79
80 static int rtl8211_external_config(struct phy_device *phydev)
81 {
82         __external_phy_init(phydev, 0);
83         printf("%s: initialize RTL8211 external done.\n", __func__);
84         return 0;
85 }
86
87 static int rtl8211_internal_config(struct phy_device *phydev)
88 {
89         struct phy_device phydev_init;
90
91         memcpy(&phydev_init, phydev, sizeof(struct phy_device));
92         /* should initialize 4 GPHYs at once */
93         __internal_phy_init(&phydev_init, 0);
94         printf("%s: initialize RTL8211 internal done.\n", __func__);
95         return 0;
96 }
97
98 static int rtl8211_probe(struct phy_device *phydev)
99 {
100         /* disable reset behavior */
101         phydev->flags = PHY_FLAG_BROKEN_RESET;
102         return 0;
103 }
104
105 /* Support for RTL8211 External PHY */
106 U_BOOT_PHY_DRIVER(rtl8211_external) = {
107         .name = "Cortina RTL8211 External",
108         .uid = PHY_ID_RTL8211_EXT,
109         .mask = PHY_ID_MASK,
110         .features = PHY_GBIT_FEATURES,
111         .config = &rtl8211_external_config,
112         .probe = &rtl8211_probe,
113         .startup = &genphy_startup,
114 };
115
116 /* Support for RTL8211 Internal PHY */
117 U_BOOT_PHY_DRIVER(rtl8211_internal) = {
118         .name = "Cortina RTL8211 Inrernal",
119         .uid = PHY_ID_RTL8211_INT,
120         .mask = PHY_ID_MASK,
121         .features = PHY_GBIT_FEATURES,
122         .config = &rtl8211_internal_config,
123         .probe = &rtl8211_probe,
124         .startup = &genphy_startup,
125 };
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