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Andy Fleming29156092010-10-20 15:35:16 -05001/*
2 * Copyright 2011 Freescale Semiconductor, Inc.
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23#include <common.h>
24#include <libfdt.h>
25#include <libfdt_env.h>
26#include <fdt_support.h>
27
Timur Tabi45b092d2012-08-14 06:47:23 +000028#include <fm_eth.h>
29#include <asm/fsl_serdes.h>
30
Andy Fleming29156092010-10-20 15:35:16 -050031/*
32 * Given the following ...
33 *
34 * 1) A pointer to an Fman Ethernet node (as identified by the 'compat'
35 * compatible string and 'addr' physical address)
36 *
37 * 2) The name of an alias that points to the ethernet-phy node (usually inside
38 * a virtual MDIO node)
39 *
40 * ... update that Ethernet node's phy-handle property to point to the
41 * ethernet-phy node. This is how we link an Ethernet node to its PHY, so each
42 * PHY in a virtual MDIO node must have an alias.
Timur Tabi1fc0d592012-05-04 12:21:28 +000043 *
44 * Returns 0 on success, or a negative FDT error code on error.
Andy Fleming29156092010-10-20 15:35:16 -050045 */
Timur Tabi1fc0d592012-05-04 12:21:28 +000046int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr,
Andy Fleming29156092010-10-20 15:35:16 -050047 const char *alias)
48{
Timur Tabi1fc0d592012-05-04 12:21:28 +000049 int offset;
50 unsigned int ph;
Andy Fleming29156092010-10-20 15:35:16 -050051 const char *path;
52
53 /* Get a path to the node that 'alias' points to */
54 path = fdt_get_alias(fdt, alias);
Timur Tabi1fc0d592012-05-04 12:21:28 +000055 if (!path)
56 return -FDT_ERR_BADPATH;
Andy Fleming29156092010-10-20 15:35:16 -050057
Timur Tabi1fc0d592012-05-04 12:21:28 +000058 /* Get the offset of that node */
59 offset = fdt_path_offset(fdt, path);
60 if (offset < 0)
61 return offset;
62
63 ph = fdt_create_phandle(fdt, offset);
64 if (!ph)
65 return -FDT_ERR_BADPHANDLE;
Andy Fleming29156092010-10-20 15:35:16 -050066
67 offset = fdt_node_offset_by_compat_reg(fdt, compat, addr);
Timur Tabi1fc0d592012-05-04 12:21:28 +000068 if (offset < 0)
69 return offset;
70
71 return fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph));
Andy Fleming29156092010-10-20 15:35:16 -050072}
Timur Tabi45b092d2012-08-14 06:47:23 +000073
74/*
75 * Return the SerDes device enum for a given Fman port
76 *
77 * This function just maps the fm_port namespace to the srds_prtcl namespace.
78 */
79enum srds_prtcl serdes_device_from_fm_port(enum fm_port port)
80{
81 static const enum srds_prtcl srds_table[] = {
82 [FM1_DTSEC1] = SGMII_FM1_DTSEC1,
83 [FM1_DTSEC2] = SGMII_FM1_DTSEC2,
84 [FM1_DTSEC3] = SGMII_FM1_DTSEC3,
85 [FM1_DTSEC4] = SGMII_FM1_DTSEC4,
86 [FM1_DTSEC5] = SGMII_FM1_DTSEC5,
87 [FM1_10GEC1] = XAUI_FM1,
88 [FM2_DTSEC1] = SGMII_FM2_DTSEC1,
89 [FM2_DTSEC2] = SGMII_FM2_DTSEC2,
90 [FM2_DTSEC3] = SGMII_FM2_DTSEC3,
91 [FM2_DTSEC4] = SGMII_FM2_DTSEC4,
92 [FM2_DTSEC5] = SGMII_FM2_DTSEC5,
93 [FM2_10GEC1] = XAUI_FM2,
94 };
95
96 if ((port < FM1_DTSEC1) || (port > FM2_10GEC1))
97 return NONE;
98 else
99 return srds_table[port];
100}