Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Peter Geis | 464 | 100.00% | 3 | 100.00% |
Total | 464 | 3 |
// SPDX-License-Identifier: GPL-2.0+ /* * Driver for Motorcomm PHYs * * Author: Peter Geis <pgwipeout@gmail.com> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/phy.h> #define PHY_ID_YT8511 0x0000010a #define YT8511_PAGE_SELECT 0x1e #define YT8511_PAGE 0x1f #define YT8511_EXT_CLK_GATE 0x0c #define YT8511_EXT_DELAY_DRIVE 0x0d #define YT8511_EXT_SLEEP_CTRL 0x27 /* 2b00 25m from pll * 2b01 25m from xtl *default* * 2b10 62.m from pll * 2b11 125m from pll */ #define YT8511_CLK_125M (BIT(2) | BIT(1)) #define YT8511_PLLON_SLP BIT(14) /* RX Delay enabled = 1.8ns 1000T, 8ns 10/100T */ #define YT8511_DELAY_RX BIT(0) /* TX Gig-E Delay is bits 7:4, default 0x5 * TX Fast-E Delay is bits 15:12, default 0xf * Delay = 150ps * N - 250ps * On = 2000ps, off = 50ps */ #define YT8511_DELAY_GE_TX_EN (0xf << 4) #define YT8511_DELAY_GE_TX_DIS (0x2 << 4) #define YT8511_DELAY_FE_TX_EN (0xf << 12) #define YT8511_DELAY_FE_TX_DIS (0x2 << 12) static int yt8511_read_page(struct phy_device *phydev) { return __phy_read(phydev, YT8511_PAGE_SELECT); }; static int yt8511_write_page(struct phy_device *phydev, int page) { return __phy_write(phydev, YT8511_PAGE_SELECT, page); }; static int yt8511_config_init(struct phy_device *phydev) { int oldpage, ret = 0; unsigned int ge, fe; oldpage = phy_select_page(phydev, YT8511_EXT_CLK_GATE); if (oldpage < 0) goto err_restore_page; /* set rgmii delay mode */ switch (phydev->interface) { case PHY_INTERFACE_MODE_RGMII: ge = YT8511_DELAY_GE_TX_DIS; fe = YT8511_DELAY_FE_TX_DIS; break; case PHY_INTERFACE_MODE_RGMII_RXID: ge = YT8511_DELAY_RX | YT8511_DELAY_GE_TX_DIS; fe = YT8511_DELAY_FE_TX_DIS; break; case PHY_INTERFACE_MODE_RGMII_TXID: ge = YT8511_DELAY_GE_TX_EN; fe = YT8511_DELAY_FE_TX_EN; break; case PHY_INTERFACE_MODE_RGMII_ID: ge = YT8511_DELAY_RX | YT8511_DELAY_GE_TX_EN; fe = YT8511_DELAY_FE_TX_EN; break; default: /* do not support other modes */ ret = -EOPNOTSUPP; goto err_restore_page; } ret = __phy_modify(phydev, YT8511_PAGE, (YT8511_DELAY_RX | YT8511_DELAY_GE_TX_EN), ge); if (ret < 0) goto err_restore_page; /* set clock mode to 125mhz */ ret = __phy_modify(phydev, YT8511_PAGE, 0, YT8511_CLK_125M); if (ret < 0) goto err_restore_page; /* fast ethernet delay is in a separate page */ ret = __phy_write(phydev, YT8511_PAGE_SELECT, YT8511_EXT_DELAY_DRIVE); if (ret < 0) goto err_restore_page; ret = __phy_modify(phydev, YT8511_PAGE, YT8511_DELAY_FE_TX_EN, fe); if (ret < 0) goto err_restore_page; /* leave pll enabled in sleep */ ret = __phy_write(phydev, YT8511_PAGE_SELECT, YT8511_EXT_SLEEP_CTRL); if (ret < 0) goto err_restore_page; ret = __phy_modify(phydev, YT8511_PAGE, 0, YT8511_PLLON_SLP); if (ret < 0) goto err_restore_page; err_restore_page: return phy_restore_page(phydev, oldpage, ret); } static struct phy_driver motorcomm_phy_drvs[] = { { PHY_ID_MATCH_EXACT(PHY_ID_YT8511), .name = "YT8511 Gigabit Ethernet", .config_init = yt8511_config_init, .suspend = genphy_suspend, .resume = genphy_resume, .read_page = yt8511_read_page, .write_page = yt8511_write_page, }, }; module_phy_driver(motorcomm_phy_drvs); MODULE_DESCRIPTION("Motorcomm PHY driver"); MODULE_AUTHOR("Peter Geis"); MODULE_LICENSE("GPL"); static const struct mdio_device_id __maybe_unused motorcomm_tbl[] = { { PHY_ID_MATCH_EXACT(PHY_ID_YT8511) }, { /* sentinal */ } }; MODULE_DEVICE_TABLE(mdio, motorcomm_tbl);
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