1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Freescale SGMII Riser Card
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * This driver supports the SGMII Riser card found on the
5*4882a593Smuzhiyun * "DS" style of development board from Freescale.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * This software may be used and distributed according to the
8*4882a593Smuzhiyun * terms of the GNU Public License, Version 2, incorporated
9*4882a593Smuzhiyun * herein by reference.
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * Copyright 2008 Freescale Semiconductor, Inc.
12*4882a593Smuzhiyun *
13*4882a593Smuzhiyun */
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include <config.h>
16*4882a593Smuzhiyun #include <common.h>
17*4882a593Smuzhiyun #include <net.h>
18*4882a593Smuzhiyun #include <linux/libfdt.h>
19*4882a593Smuzhiyun #include <tsec.h>
20*4882a593Smuzhiyun #include <fdt_support.h>
21*4882a593Smuzhiyun
fsl_sgmii_riser_init(struct tsec_info_struct * tsec_info,int num)22*4882a593Smuzhiyun void fsl_sgmii_riser_init(struct tsec_info_struct *tsec_info, int num)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun int i;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun for (i = 0; i < num; i++)
27*4882a593Smuzhiyun if (tsec_info[i].flags & TSEC_SGMII)
28*4882a593Smuzhiyun tsec_info[i].phyaddr += SGMII_RISER_PHY_OFFSET;
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
fsl_sgmii_riser_fdt_fixup(void * fdt)31*4882a593Smuzhiyun void fsl_sgmii_riser_fdt_fixup(void *fdt)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun struct eth_device *dev;
34*4882a593Smuzhiyun int node;
35*4882a593Smuzhiyun int mdio_node;
36*4882a593Smuzhiyun int i = -1;
37*4882a593Smuzhiyun int etsec_num = 0;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun node = fdt_path_offset(fdt, "/aliases");
40*4882a593Smuzhiyun if (node < 0)
41*4882a593Smuzhiyun return;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun while ((dev = eth_get_dev_by_index(++i)) != NULL) {
44*4882a593Smuzhiyun struct tsec_private *priv;
45*4882a593Smuzhiyun int phy_node;
46*4882a593Smuzhiyun int enet_node;
47*4882a593Smuzhiyun uint32_t ph;
48*4882a593Smuzhiyun char sgmii_phy[16];
49*4882a593Smuzhiyun char enet[16];
50*4882a593Smuzhiyun const u32 *phyh;
51*4882a593Smuzhiyun const char *model;
52*4882a593Smuzhiyun const char *path;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun if (!strstr(dev->name, "eTSEC"))
55*4882a593Smuzhiyun continue;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun priv = dev->priv;
58*4882a593Smuzhiyun if (!(priv->flags & TSEC_SGMII)) {
59*4882a593Smuzhiyun etsec_num++;
60*4882a593Smuzhiyun continue;
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun mdio_node = fdt_node_offset_by_compatible(fdt, -1,
64*4882a593Smuzhiyun "fsl,gianfar-mdio");
65*4882a593Smuzhiyun if (mdio_node < 0)
66*4882a593Smuzhiyun return;
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun sprintf(sgmii_phy, "sgmii-phy@%d", etsec_num);
69*4882a593Smuzhiyun phy_node = fdt_subnode_offset(fdt, mdio_node, sgmii_phy);
70*4882a593Smuzhiyun if (phy_node > 0) {
71*4882a593Smuzhiyun fdt_increase_size(fdt, 32);
72*4882a593Smuzhiyun ph = fdt_create_phandle(fdt, phy_node);
73*4882a593Smuzhiyun if (!ph)
74*4882a593Smuzhiyun continue;
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun sprintf(enet, "ethernet%d", etsec_num++);
78*4882a593Smuzhiyun path = fdt_getprop(fdt, node, enet, NULL);
79*4882a593Smuzhiyun if (!path) {
80*4882a593Smuzhiyun debug("No alias for %s\n", enet);
81*4882a593Smuzhiyun continue;
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun enet_node = fdt_path_offset(fdt, path);
85*4882a593Smuzhiyun if (enet_node < 0)
86*4882a593Smuzhiyun continue;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun model = fdt_getprop(fdt, enet_node, "model", NULL);
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun /*
91*4882a593Smuzhiyun * We only want to do this to eTSECs. On some platforms
92*4882a593Smuzhiyun * there are more than one type of gianfar-style ethernet
93*4882a593Smuzhiyun * controller, and as we are creating an implicit connection
94*4882a593Smuzhiyun * between ethernet nodes and eTSEC devices, it is best to
95*4882a593Smuzhiyun * make the connection use as much explicit information
96*4882a593Smuzhiyun * as exists.
97*4882a593Smuzhiyun */
98*4882a593Smuzhiyun if (!strstr(model, "TSEC"))
99*4882a593Smuzhiyun continue;
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun if (phy_node < 0) {
102*4882a593Smuzhiyun /*
103*4882a593Smuzhiyun * This part is only for old device tree without
104*4882a593Smuzhiyun * sgmii_phy nodes. It's kept just for compatible
105*4882a593Smuzhiyun * reason. Soon to be deprecated if all device tree
106*4882a593Smuzhiyun * get updated.
107*4882a593Smuzhiyun */
108*4882a593Smuzhiyun phyh = fdt_getprop(fdt, enet_node, "phy-handle", NULL);
109*4882a593Smuzhiyun if (!phyh)
110*4882a593Smuzhiyun continue;
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun phy_node = fdt_node_offset_by_phandle(fdt,
113*4882a593Smuzhiyun fdt32_to_cpu(*phyh));
114*4882a593Smuzhiyun
115*4882a593Smuzhiyun priv = dev->priv;
116*4882a593Smuzhiyun
117*4882a593Smuzhiyun if (priv->flags & TSEC_SGMII)
118*4882a593Smuzhiyun fdt_setprop_cell(fdt, phy_node, "reg",
119*4882a593Smuzhiyun priv->phyaddr);
120*4882a593Smuzhiyun } else {
121*4882a593Smuzhiyun fdt_setprop(fdt, enet_node, "phy-handle", &ph,
122*4882a593Smuzhiyun sizeof(ph));
123*4882a593Smuzhiyun fdt_setprop_string(fdt, enet_node,
124*4882a593Smuzhiyun "phy-connection-type",
125*4882a593Smuzhiyun phy_string_for_interface(
126*4882a593Smuzhiyun PHY_INTERFACE_MODE_SGMII));
127*4882a593Smuzhiyun }
128*4882a593Smuzhiyun }
129*4882a593Smuzhiyun }
130