1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) 2019 Angelo Dureghello <angelo.dureghello@timesys.com>
4 */
5
6 #include <common.h>
7 #include <asm/global_data.h>
8 #include <linux/libfdt.h>
9 #include <fdt_support.h>
10
11 DECLARE_GLOBAL_DATA_PTR;
12
13 #if defined(CONFIG_MCFFEC) || defined(CONFIG_FSLDMAFEC)
fec_get_node(int fec_idx)14 static int fec_get_node(int fec_idx)
15 {
16 char fec_alias[5] = {"fec"};
17 const char *path;
18 int node;
19
20 if (fec_idx > 1) {
21 puts("Invalid MII base index");
22 return -ENOENT;
23 }
24
25 fec_alias[3] = fec_idx + '0';
26
27 path = fdt_get_alias(gd->fdt_blob, fec_alias);
28 if (!path) {
29 puts("Invalid MII path");
30 return -ENOENT;
31 }
32
33 node = fdt_path_offset(gd->fdt_blob, path);
34 if (node < 0)
35 return -ENOENT;
36
37 return node;
38 }
39
fec_get_fdt_prop(int fec_idx,const char * prop,u32 * value)40 int fec_get_fdt_prop(int fec_idx, const char *prop, u32 *value)
41 {
42 int node;
43 const u32 *val;
44
45 node = fec_get_node(fec_idx);
46 if (node < 0)
47 return node;
48
49 val = fdt_getprop(gd->fdt_blob, node, prop, NULL);
50 if (!val)
51 return -ENOENT;
52
53 *value = fdt32_to_cpu(*val);
54
55 return 0;
56 }
57
fec_get_base_addr(int fec_idx,u32 * fec_iobase)58 int fec_get_base_addr(int fec_idx, u32 *fec_iobase)
59 {
60 int node;
61 fdt_size_t size;
62 fdt_addr_t addr;
63
64 node = fec_get_node(fec_idx);
65 if (node < 0)
66 return node;
67
68 addr = fdtdec_get_addr_size(gd->fdt_blob, node, "reg", &size);
69
70 *fec_iobase = (u32)addr;
71
72 return 0;
73 }
74
fec_get_mii_base(int fec_idx,u32 * mii_base)75 int fec_get_mii_base(int fec_idx, u32 *mii_base)
76 {
77 return fec_get_fdt_prop(fec_idx, "mii-base", mii_base);
78 }
79
80 #endif //CONFIG_MCFFEC || CONFIG_FSLDMAFEC
81