1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright 2011-2015 Freescale Semiconductor, Inc.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <linux/libfdt.h>
9*4882a593Smuzhiyun #include <linux/libfdt_env.h>
10*4882a593Smuzhiyun #include <fdt_support.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <fm_eth.h>
13*4882a593Smuzhiyun #ifdef CONFIG_FSL_LAYERSCAPE
14*4882a593Smuzhiyun #include <asm/arch/fsl_serdes.h>
15*4882a593Smuzhiyun #else
16*4882a593Smuzhiyun #include <asm/fsl_serdes.h>
17*4882a593Smuzhiyun #endif
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun /*
20*4882a593Smuzhiyun * Given the following ...
21*4882a593Smuzhiyun *
22*4882a593Smuzhiyun * 1) A pointer to an Fman Ethernet node (as identified by the 'compat'
23*4882a593Smuzhiyun * compatible string and 'addr' physical address)
24*4882a593Smuzhiyun *
25*4882a593Smuzhiyun * 2) The name of an alias that points to the ethernet-phy node (usually inside
26*4882a593Smuzhiyun * a virtual MDIO node)
27*4882a593Smuzhiyun *
28*4882a593Smuzhiyun * ... update that Ethernet node's phy-handle property to point to the
29*4882a593Smuzhiyun * ethernet-phy node. This is how we link an Ethernet node to its PHY, so each
30*4882a593Smuzhiyun * PHY in a virtual MDIO node must have an alias.
31*4882a593Smuzhiyun *
32*4882a593Smuzhiyun * Returns 0 on success, or a negative FDT error code on error.
33*4882a593Smuzhiyun */
fdt_set_phy_handle(void * fdt,char * compat,phys_addr_t addr,const char * alias)34*4882a593Smuzhiyun int fdt_set_phy_handle(void *fdt, char *compat, phys_addr_t addr,
35*4882a593Smuzhiyun const char *alias)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun int offset;
38*4882a593Smuzhiyun unsigned int ph;
39*4882a593Smuzhiyun const char *path;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun /* Get a path to the node that 'alias' points to */
42*4882a593Smuzhiyun path = fdt_get_alias(fdt, alias);
43*4882a593Smuzhiyun if (!path)
44*4882a593Smuzhiyun return -FDT_ERR_BADPATH;
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun /* Get the offset of that node */
47*4882a593Smuzhiyun offset = fdt_path_offset(fdt, path);
48*4882a593Smuzhiyun if (offset < 0)
49*4882a593Smuzhiyun return offset;
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun ph = fdt_create_phandle(fdt, offset);
52*4882a593Smuzhiyun if (!ph)
53*4882a593Smuzhiyun return -FDT_ERR_BADPHANDLE;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun ph = cpu_to_fdt32(ph);
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun offset = fdt_node_offset_by_compat_reg(fdt, compat, addr);
58*4882a593Smuzhiyun if (offset < 0)
59*4882a593Smuzhiyun return offset;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun return fdt_setprop(fdt, offset, "phy-handle", &ph, sizeof(ph));
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun /*
65*4882a593Smuzhiyun * Return the SerDes device enum for a given Fman port
66*4882a593Smuzhiyun *
67*4882a593Smuzhiyun * This function just maps the fm_port namespace to the srds_prtcl namespace.
68*4882a593Smuzhiyun */
serdes_device_from_fm_port(enum fm_port port)69*4882a593Smuzhiyun enum srds_prtcl serdes_device_from_fm_port(enum fm_port port)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun static const enum srds_prtcl srds_table[] = {
72*4882a593Smuzhiyun [FM1_DTSEC1] = SGMII_FM1_DTSEC1,
73*4882a593Smuzhiyun [FM1_DTSEC2] = SGMII_FM1_DTSEC2,
74*4882a593Smuzhiyun [FM1_DTSEC3] = SGMII_FM1_DTSEC3,
75*4882a593Smuzhiyun [FM1_DTSEC4] = SGMII_FM1_DTSEC4,
76*4882a593Smuzhiyun [FM1_DTSEC5] = SGMII_FM1_DTSEC5,
77*4882a593Smuzhiyun [FM1_10GEC1] = XAUI_FM1,
78*4882a593Smuzhiyun [FM2_DTSEC1] = SGMII_FM2_DTSEC1,
79*4882a593Smuzhiyun [FM2_DTSEC2] = SGMII_FM2_DTSEC2,
80*4882a593Smuzhiyun [FM2_DTSEC3] = SGMII_FM2_DTSEC3,
81*4882a593Smuzhiyun [FM2_DTSEC4] = SGMII_FM2_DTSEC4,
82*4882a593Smuzhiyun [FM2_DTSEC5] = SGMII_FM2_DTSEC5,
83*4882a593Smuzhiyun [FM2_10GEC1] = XAUI_FM2,
84*4882a593Smuzhiyun };
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun if ((port < FM1_DTSEC1) || (port > FM2_10GEC1))
87*4882a593Smuzhiyun return NONE;
88*4882a593Smuzhiyun else
89*4882a593Smuzhiyun return srds_table[port];
90*4882a593Smuzhiyun }
91