LXR uboot/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
  14DECLARE_GLOBAL_DATA_PTR;
  15
  16int 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
  48int 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
  61int fixedphy_shutdown(struct phy_device *phydev)
  62{
  63        return 0;
  64}
  65
  66static 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
  76int phy_fixed_init(void)
  77{
  78        phy_register(&fixedphy_driver);
  79        return 0;
  80}
  81