git.sur5r.net Git - u-boot/blob - drivers/net/phy/fixed.c

   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 }