board/freescale/common/sgmii_riser.c

   1 /*
   2  * Freescale SGMII Riser Card
   3  *
   4  * This driver supports the SGMII Riser card found on the
   5  * "DS" style of development board from Freescale.
   6  *
   7  * This software may be used and distributed according to the
   8  * terms of the GNU Public License, Version 2, incorporated
   9  * herein by reference.
  10  *
  11  * Copyright 2008 Freescale Semiconductor, Inc.
  12  *
  13  */
  14
  15 #include <config.h>
  16 #include <common.h>
  17 #include <net.h>
  18 #include <libfdt.h>
  19 #include <tsec.h>
  20 #include <fdt_support.h>
  21
  22 void fsl_sgmii_riser_init(struct tsec_info_struct *tsec_info, int num)
  23 {
  24         int i;
  25
  26         for (i = 0; i < num; i++)
  27                 if (tsec_info[i].flags & TSEC_SGMII)
  28                         tsec_info[i].phyaddr += SGMII_RISER_PHY_OFFSET;
  29 }
  30
  31 void fsl_sgmii_riser_fdt_fixup(void *fdt)
  32 {
  33         struct eth_device *dev;
  34         int node;
  35         int mdio_node;
  36         int i = -1;
  37         int etsec_num = 0;
  38
  39         node = fdt_path_offset(fdt, "/aliases");
  40         if (node < 0)
  41                 return;
  42
  43         while ((dev = eth_get_dev_by_index(++i)) != NULL) {
  44                 struct tsec_private *priv;
  45                 int phy_node;
  46                 int enet_node;
  47                 uint32_t ph;
  48                 char sgmii_phy[16];
  49                 char enet[16];
  50                 const u32 *phyh;
  51                 const char *model;
  52                 const char *path;
  53
  54                 if (!strstr(dev->name, "eTSEC"))
  55                         continue;
  56
  57                 priv = dev->priv;
  58                 if (!(priv->flags & TSEC_SGMII)) {
  59                         etsec_num++;
  60                         continue;
  61                 }
  62
  63                 mdio_node = fdt_node_offset_by_compatible(fdt, -1,
  64                                 "fsl,gianfar-mdio");
  65                 if (mdio_node < 0)
  66                         return;
  67
  68                 sprintf(sgmii_phy, "sgmii-phy@%d", etsec_num);
  69                 phy_node = fdt_subnode_offset(fdt, mdio_node, sgmii_phy);
  70                 if (phy_node > 0) {
  71                         fdt_increase_size(fdt, 32);
  72                         ph = fdt_create_phandle(fdt, phy_node);
  73                         if (!ph)
  74                                 continue;
  75                 }
  76
  77                 sprintf(enet, "ethernet%d", etsec_num++);
  78                 path = fdt_getprop(fdt, node, enet, NULL);
  79                 if (!path) {
  80                         debug("No alias for %s\n", enet);
  81                         continue;
  82                 }
  83
  84                 enet_node = fdt_path_offset(fdt, path);
  85                 if (enet_node < 0)
  86                         continue;
  87
  88                 model = fdt_getprop(fdt, enet_node, "model", NULL);
  89
  90                 /*
  91                  * We only want to do this to eTSECs.  On some platforms
  92                  * there are more than one type of gianfar-style ethernet
  93                  * controller, and as we are creating an implicit connection
  94                  * between ethernet nodes and eTSEC devices, it is best to
  95                  * make the connection use as much explicit information
  96                  * as exists.
  97                  */
  98                 if (!strstr(model, "TSEC"))
  99                         continue;
 100
 101                 if (phy_node < 0) {
 102                         /*
 103                          * This part is only for old device tree without
 104                          * sgmii_phy nodes. It's kept just for compatible
 105                          * reason. Soon to be deprecated if all device tree
 106                          * get updated.
 107                          */
 108                         phyh = fdt_getprop(fdt, enet_node, "phy-handle", NULL);
 109                         if (!phyh)
 110                                 continue;
 111
 112                         phy_node = fdt_node_offset_by_phandle(fdt,
 113                                         fdt32_to_cpu(*phyh));
 114
 115                         priv = dev->priv;
 116
 117                         if (priv->flags & TSEC_SGMII)
 118                                 fdt_setprop_cell(fdt, phy_node, "reg",
 119                                                 priv->phyaddr);
 120                 } else {
 121                         fdt_setprop(fdt, enet_node, "phy-handle", &ph,
 122                                         sizeof(ph));
 123                         fdt_setprop_string(fdt, enet_node,
 124                                         "phy-connection-type",
 125                                         phy_string_for_interface(
 126                                                 PHY_INTERFACE_MODE_SGMII));
 127                 }
 128         }
 129 }