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1 | /* |
2 | * Amlogic Meson GXL Internal PHY Driver | |
3 | * | |
4 | * Copyright (C) 2015 Amlogic, Inc. All rights reserved. | |
5 | * Copyright (C) 2016 BayLibre, SAS. All rights reserved. | |
6 | * Author: Neil Armstrong <narmstrong@baylibre.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | * more details. | |
17 | * | |
18 | */ | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/mii.h> | |
22 | #include <linux/ethtool.h> | |
23 | #include <linux/phy.h> | |
24 | #include <linux/netdevice.h> | |
25 | ||
26 | static int meson_gxl_config_init(struct phy_device *phydev) | |
27 | { | |
28 | /* Enable Analog and DSP register Bank access by */ | |
29 | phy_write(phydev, 0x14, 0x0000); | |
30 | phy_write(phydev, 0x14, 0x0400); | |
31 | phy_write(phydev, 0x14, 0x0000); | |
32 | phy_write(phydev, 0x14, 0x0400); | |
33 | ||
34 | /* Write Analog register 23 */ | |
35 | phy_write(phydev, 0x17, 0x8E0D); | |
36 | phy_write(phydev, 0x14, 0x4417); | |
37 | ||
38 | /* Enable fractional PLL */ | |
39 | phy_write(phydev, 0x17, 0x0005); | |
40 | phy_write(phydev, 0x14, 0x5C1B); | |
41 | ||
42 | /* Program fraction FR_PLL_DIV1 */ | |
43 | phy_write(phydev, 0x17, 0x029A); | |
44 | phy_write(phydev, 0x14, 0x5C1D); | |
45 | ||
46 | /* Program fraction FR_PLL_DIV1 */ | |
47 | phy_write(phydev, 0x17, 0xAAAA); | |
48 | phy_write(phydev, 0x14, 0x5C1C); | |
49 | ||
50 | return 0; | |
51 | } | |
52 | ||
53 | static struct phy_driver meson_gxl_phy[] = { | |
54 | { | |
55 | .phy_id = 0x01814400, | |
56 | .phy_id_mask = 0xfffffff0, | |
57 | .name = "Meson GXL Internal PHY", | |
58 | .features = PHY_BASIC_FEATURES, | |
59 | .flags = PHY_IS_INTERNAL, | |
60 | .config_init = meson_gxl_config_init, | |
61 | .config_aneg = genphy_config_aneg, | |
62 | .aneg_done = genphy_aneg_done, | |
63 | .read_status = genphy_read_status, | |
64 | .suspend = genphy_suspend, | |
65 | .resume = genphy_resume, | |
66 | }, | |
67 | }; | |
68 | ||
69 | static struct mdio_device_id __maybe_unused meson_gxl_tbl[] = { | |
70 | { 0x01814400, 0xfffffff0 }, | |
71 | { } | |
72 | }; | |
73 | ||
74 | module_phy_driver(meson_gxl_phy); | |
75 | ||
76 | MODULE_DEVICE_TABLE(mdio, meson_gxl_tbl); | |
77 | ||
78 | MODULE_DESCRIPTION("Amlogic Meson GXL Internal PHY driver"); | |
79 | MODULE_AUTHOR("Baoqi wang"); | |
80 | MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); | |
81 | MODULE_LICENSE("GPL"); |