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