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

   1 /*
   2  * Fixed-Link phy
   3  *
   4  * Copyright 2017 Bernecker & Rainer Industrieelektronik GmbH
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <config.h>
  10 #include <common.h>
  11 #include <phy.h>
  12 #include <dm.h>
  13 #include <fdt_support.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 int fixedphy_probe(struct phy_device *phydev)
  18 {
  19         struct fixed_link *priv;
  20         int ofnode = phydev->addr;
  21         u32 val;
  22
  23         /* check for mandatory properties within fixed-link node */
  24         val = fdt_getprop_u32_default_node(gd->fdt_blob,
  25                                            ofnode, 0, "speed", 0);
  26         if (val != SPEED_10 && val != SPEED_100 && val != SPEED_1000) {
  27                 printf("ERROR: no/invalid speed given in fixed-link node!");
  28                 return -EINVAL;
  29         }
  30
  31         priv = malloc(sizeof(*priv));
  32         if (!priv)
  33                 return -ENOMEM;
  34         memset(priv, 0, sizeof(*priv));
  35
  36         phydev->priv = priv;
  37         phydev->addr = 0;
  38
  39         priv->link_speed = val;
  40         priv->duplex = fdtdec_get_bool(gd->fdt_blob, ofnode, "full-duplex");
  41         priv->pause = fdtdec_get_bool(gd->fdt_blob, ofnode, "pause");
  42         priv->asym_pause = fdtdec_get_bool(gd->fdt_blob, ofnode, "asym-pause");
  43
  44         /* fixed-link phy must not be reset by core phy code */
  45         phydev->flags |= PHY_FLAG_BROKEN_RESET;
  46
  47         return 0;
  48 }
  49
  50 int fixedphy_startup(struct phy_device *phydev)
  51 {
  52         struct fixed_link *priv = phydev->priv;
  53
  54         phydev->asym_pause = priv->asym_pause;
  55         phydev->pause = priv->pause;
  56         phydev->duplex = priv->duplex;
  57         phydev->speed = priv->link_speed;
  58         phydev->link = 1;
  59
  60         return 0;
  61 }
  62
  63 int fixedphy_shutdown(struct phy_device *phydev)
  64 {
  65         return 0;
  66 }
  67
  68 static struct phy_driver fixedphy_driver = {
  69         .uid            = PHY_FIXED_ID,
  70         .mask           = 0xffffffff,
  71         .name           = "Fixed PHY",
  72         .features       = PHY_GBIT_FEATURES | SUPPORTED_MII,
  73         .probe          = fixedphy_probe,
  74         .startup        = fixedphy_startup,
  75         .shutdown       = fixedphy_shutdown,
  76 };
  77
  78 int phy_fixed_init(void)
  79 {
  80         phy_register(&fixedphy_driver);
  81         return 0;
  82 }