developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | #include <linux/bitfield.h> |
| 3 | #include <linux/module.h> |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 4 | #include <linux/phy.h> |
| 5 | |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 6 | #define MTK_EXT_PAGE_ACCESS 0x1f |
| 7 | #define MTK_PHY_PAGE_STANDARD 0x0000 |
| 8 | #define MTK_PHY_PAGE_EXTENDED 0x0001 |
| 9 | #define MTK_PHY_PAGE_EXTENDED_2 0x0002 |
| 10 | #define MTK_PHY_PAGE_EXTENDED_3 0x0003 |
| 11 | #define MTK_PHY_PAGE_EXTENDED_2A30 0x2a30 |
| 12 | #define MTK_PHY_PAGE_EXTENDED_52B5 0x52b5 |
| 13 | |
developer | 432b8c0 | 2023-08-09 16:33:49 +0800 | [diff] [blame] | 14 | #define MTK_PHY_RG_DEV1E_REG2C7 0x2c7 |
| 15 | #define MTK_PHY_MAX_GAIN_MASK GENMASK(4, 0) |
| 16 | #define MTK_PHY_MIN_GAIN_MASK GENMASK(12, 8) |
| 17 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 18 | static int mtk_gephy_read_page(struct phy_device *phydev) |
| 19 | { |
| 20 | return __phy_read(phydev, MTK_EXT_PAGE_ACCESS); |
| 21 | } |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 22 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 23 | static int mtk_gephy_write_page(struct phy_device *phydev, int page) |
| 24 | { |
| 25 | return __phy_write(phydev, MTK_EXT_PAGE_ACCESS, page); |
| 26 | } |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 27 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 28 | static void mtk_gephy_config_init(struct phy_device *phydev) |
| 29 | { |
| 30 | /* Disable EEE */ |
| 31 | phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0); |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 32 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 33 | /* Enable HW auto downshift */ |
| 34 | phy_modify_paged(phydev, MTK_PHY_PAGE_EXTENDED, 0x14, 0, BIT(4)); |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 35 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 36 | /* Increase SlvDPSready time */ |
| 37 | phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5); |
| 38 | __phy_write(phydev, 0x10, 0xafae); |
| 39 | __phy_write(phydev, 0x12, 0x2f); |
| 40 | __phy_write(phydev, 0x10, 0x8fae); |
| 41 | phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0); |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 42 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 43 | /* Adjust 100_mse_threshold */ |
| 44 | phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x123, 0xffff); |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 45 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 46 | /* Disable mcc */ |
| 47 | phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xa6, 0x300); |
| 48 | } |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 49 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 50 | static int mt7530_phy_config_init(struct phy_device *phydev) |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 51 | { |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 52 | mtk_gephy_config_init(phydev); |
| 53 | |
| 54 | /* Increase post_update_timer */ |
| 55 | phy_write_paged(phydev, MTK_PHY_PAGE_EXTENDED_3, 0x11, 0x4b); |
| 56 | |
| 57 | return 0; |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 58 | } |
| 59 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 60 | static int mt7531_phy_config_init(struct phy_device *phydev) |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 61 | { |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 62 | mtk_gephy_config_init(phydev); |
| 63 | |
| 64 | /* PHY link down power saving enable */ |
| 65 | phy_set_bits(phydev, 0x17, BIT(4)); |
| 66 | phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, 0xc6, 0x300); |
| 67 | |
| 68 | /* Set TX Pair delay selection */ |
| 69 | phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x13, 0x404); |
| 70 | phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x14, 0x404); |
| 71 | |
developer | 432b8c0 | 2023-08-09 16:33:49 +0800 | [diff] [blame] | 72 | /* Adjust RX min/max gain to fix CH395 100Mbps link up fail */ |
| 73 | phy_write_mmd(phydev, MDIO_MMD_VEND1, MTK_PHY_RG_DEV1E_REG2C7, |
| 74 | FIELD_PREP(MTK_PHY_MAX_GAIN_MASK, 0x8) | |
| 75 | FIELD_PREP(MTK_PHY_MIN_GAIN_MASK, 0x13)); |
| 76 | |
developer | 2149cd9 | 2023-03-10 19:01:41 +0800 | [diff] [blame] | 77 | return 0; |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 78 | } |
| 79 | |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 80 | static struct phy_driver mtk_gephy_driver[] = { |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 81 | { |
developer | 394d5eb | 2023-04-14 16:46:45 +0800 | [diff] [blame] | 82 | PHY_ID_MATCH_EXACT(0x03a29412), |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 83 | .name = "MediaTek MT7530 PHY", |
| 84 | .config_init = mt7530_phy_config_init, |
| 85 | /* Interrupts are handled by the switch, not the PHY |
| 86 | * itself. |
| 87 | */ |
| 88 | .config_intr = genphy_no_config_intr, |
| 89 | .handle_interrupt = genphy_no_ack_interrupt, |
| 90 | .suspend = genphy_suspend, |
| 91 | .resume = genphy_resume, |
| 92 | .read_page = mtk_gephy_read_page, |
| 93 | .write_page = mtk_gephy_write_page, |
| 94 | }, |
| 95 | { |
developer | 394d5eb | 2023-04-14 16:46:45 +0800 | [diff] [blame] | 96 | PHY_ID_MATCH_EXACT(0x03a29441), |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 97 | .name = "MediaTek MT7531 PHY", |
| 98 | .config_init = mt7531_phy_config_init, |
| 99 | /* Interrupts are handled by the switch, not the PHY |
| 100 | * itself. |
| 101 | */ |
| 102 | .config_intr = genphy_no_config_intr, |
| 103 | .handle_interrupt = genphy_no_ack_interrupt, |
| 104 | .suspend = genphy_suspend, |
| 105 | .resume = genphy_resume, |
| 106 | .read_page = mtk_gephy_read_page, |
| 107 | .write_page = mtk_gephy_write_page, |
| 108 | }, |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 109 | }; |
| 110 | |
| 111 | module_phy_driver(mtk_gephy_driver); |
| 112 | |
| 113 | static struct mdio_device_id __maybe_unused mtk_gephy_tbl[] = { |
| 114 | { PHY_ID_MATCH_VENDOR(0x03a29400) }, |
| 115 | { } |
| 116 | }; |
| 117 | |
| 118 | MODULE_DESCRIPTION("MediaTek Gigabit Ethernet PHY driver"); |
developer | c50c235 | 2021-12-01 10:45:35 +0800 | [diff] [blame] | 119 | MODULE_AUTHOR("DENG, Qingfang <dqfext@gmail.com>"); |
| 120 | MODULE_LICENSE("GPL"); |
| 121 | |
| 122 | MODULE_DEVICE_TABLE(mdio, mtk_gephy_tbl); |