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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
08d0d6f3 MS |
2 | /* |
3 | * Copyright (C) 2013 Xilinx, Inc. | |
08d0d6f3 MS |
4 | */ |
5 | #include <common.h> | |
6 | #include <command.h> | |
7 | #include <clk.h> | |
ff8eee03 MV |
8 | #if defined(CONFIG_DM) && defined(CONFIG_CLK) |
9 | #include <dm.h> | |
10 | #include <dm/device-internal.h> | |
11 | #endif | |
08d0d6f3 MS |
12 | |
13 | int __weak soc_clk_dump(void) | |
14 | { | |
ff8eee03 MV |
15 | #if defined(CONFIG_DM) && defined(CONFIG_CLK) |
16 | struct udevice *dev; | |
17 | struct uclass *uc; | |
18 | struct clk clk; | |
19 | int ret; | |
80b44fb3 | 20 | ulong rate; |
ff8eee03 MV |
21 | |
22 | /* Device addresses start at 1 */ | |
23 | ret = uclass_get(UCLASS_CLK, &uc); | |
24 | if (ret) | |
25 | return ret; | |
26 | ||
27 | uclass_foreach_dev(dev, uc) { | |
28 | memset(&clk, 0, sizeof(clk)); | |
29 | ret = device_probe(dev); | |
80b44fb3 ILC |
30 | if (ret) |
31 | goto noclk; | |
ff8eee03 MV |
32 | |
33 | ret = clk_request(dev, &clk); | |
80b44fb3 ILC |
34 | if (ret) |
35 | goto noclk; | |
ff8eee03 | 36 | |
80b44fb3 | 37 | rate = clk_get_rate(&clk); |
ff8eee03 | 38 | clk_free(&clk); |
80b44fb3 ILC |
39 | |
40 | if (rate == -ENODEV) | |
41 | goto noclk; | |
42 | ||
43 | printf("%-30.30s : %lu Hz\n", dev->name, rate); | |
44 | continue; | |
45 | noclk: | |
46 | printf("%-30.30s : ? Hz\n", dev->name); | |
ff8eee03 MV |
47 | } |
48 | ||
49 | return 0; | |
50 | #else | |
08d0d6f3 MS |
51 | puts("Not implemented\n"); |
52 | return 1; | |
ff8eee03 | 53 | #endif |
08d0d6f3 MS |
54 | } |
55 | ||
56 | static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc, | |
57 | char *const argv[]) | |
58 | { | |
ebc675b9 MS |
59 | int ret; |
60 | ||
61 | ret = soc_clk_dump(); | |
62 | if (ret < 0) { | |
63 | printf("Clock dump error %d\n", ret); | |
64 | ret = CMD_RET_FAILURE; | |
65 | } | |
66 | ||
67 | return ret; | |
08d0d6f3 MS |
68 | } |
69 | ||
70 | static cmd_tbl_t cmd_clk_sub[] = { | |
71 | U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""), | |
72 | }; | |
73 | ||
74 | static int do_clk(cmd_tbl_t *cmdtp, int flag, int argc, | |
75 | char *const argv[]) | |
76 | { | |
77 | cmd_tbl_t *c; | |
78 | ||
79 | if (argc < 2) | |
80 | return CMD_RET_USAGE; | |
81 | ||
82 | /* Strip off leading 'clk' command argument */ | |
83 | argc--; | |
84 | argv++; | |
85 | ||
86 | c = find_cmd_tbl(argv[0], &cmd_clk_sub[0], ARRAY_SIZE(cmd_clk_sub)); | |
87 | ||
88 | if (c) | |
89 | return c->cmd(cmdtp, flag, argc, argv); | |
90 | else | |
91 | return CMD_RET_USAGE; | |
92 | } | |
93 | ||
94 | #ifdef CONFIG_SYS_LONGHELP | |
95 | static char clk_help_text[] = | |
96 | "dump - Print clock frequencies"; | |
97 | #endif | |
98 | ||
99 | U_BOOT_CMD(clk, 2, 1, do_clk, "CLK sub-system", clk_help_text); |