1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Fixed-Link phy 4 * 5 * Copyright 2017 Bernecker & Rainer Industrieelektronik GmbH 6 */ 7 8 #include <config.h> 9 #include <common.h> 10 #include <phy.h> 11 #include <dm.h> 12 #include <fdt_support.h> 13 14 DECLARE_GLOBAL_DATA_PTR; 15 16 int fixedphy_probe(struct phy_device *phydev) 17 { 18 struct fixed_link *priv; 19 int ofnode = phydev->addr; 20 u32 val; 21 22 /* check for mandatory properties within fixed-link node */ 23 val = fdt_getprop_u32_default_node(gd->fdt_blob, 24 ofnode, 0, "speed", 0); 25 if (val != SPEED_10 && val != SPEED_100 && val != SPEED_1000) { 26 printf("ERROR: no/invalid speed given in fixed-link node!"); 27 return -EINVAL; 28 } 29 30 priv = malloc(sizeof(*priv)); 31 if (!priv) 32 return -ENOMEM; 33 memset(priv, 0, sizeof(*priv)); 34 35 phydev->priv = priv; 36 37 priv->link_speed = val; 38 priv->duplex = fdtdec_get_bool(gd->fdt_blob, ofnode, "full-duplex"); 39 priv->pause = fdtdec_get_bool(gd->fdt_blob, ofnode, "pause"); 40 priv->asym_pause = fdtdec_get_bool(gd->fdt_blob, ofnode, "asym-pause"); 41 42 /* fixed-link phy must not be reset by core phy code */ 43 phydev->flags |= PHY_FLAG_BROKEN_RESET; 44 45 return 0; 46 } 47 48 int fixedphy_startup(struct phy_device *phydev) 49 { 50 struct fixed_link *priv = phydev->priv; 51 52 phydev->asym_pause = priv->asym_pause; 53 phydev->pause = priv->pause; 54 phydev->duplex = priv->duplex; 55 phydev->speed = priv->link_speed; 56 phydev->link = 1; 57 58 return 0; 59 } 60 61 int fixedphy_shutdown(struct phy_device *phydev) 62 { 63 return 0; 64 } 65 66 static struct phy_driver fixedphy_driver = { 67 .uid = PHY_FIXED_ID, 68 .mask = 0xffffffff, 69 .name = "Fixed PHY", 70 .features = PHY_GBIT_FEATURES | SUPPORTED_MII, 71 .probe = fixedphy_probe, 72 .startup = fixedphy_startup, 73 .shutdown = fixedphy_shutdown, 74 }; 75 76 int phy_fixed_init(void) 77 { 78 phy_register(&fixedphy_driver); 79 return 0; 80 } 81