1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/*
* (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
* Terry Lv
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <linux/types.h>
#include <command.h>
#include <common.h>
#include <asm/clock.h>
int do_clkops(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int rc = 0;
int freq = 0;
switch (argc) {
case 1:
clk_info(ALL_CLK);
break;
case 2:
if (strcmp(argv[1], "core") == 0)
clk_info(CPU_CLK);
else if (strcmp(argv[1], "periph") == 0)
clk_info(PERIPH_CLK);
else if (strcmp(argv[1], "ddr") == 0)
clk_info(DDR_CLK);
else if (strcmp(argv[1], "nfc") == 0)
clk_info(NFC_CLK);
else
printf("Unsupported clock type!\n");
break;
case 3:
freq = simple_strtoul(argv[2], NULL, 10);
if (strcmp(argv[1], "core") == 0)
clk_config(CONFIG_REF_CLK_FREQ, freq, CPU_CLK);
else if (strcmp(argv[1], "periph") == 0)
clk_config(CONFIG_REF_CLK_FREQ, freq, PERIPH_CLK);
else if (strcmp(argv[1], "ddr") == 0)
clk_config(CONFIG_REF_CLK_FREQ, freq, DDR_CLK);
else if (strcmp(argv[1], "nfc") == 0)
clk_config(CONFIG_REF_CLK_FREQ, freq, NFC_CLK);
else
printf("Unsupported clock type!\n");
break;
default:
rc = 1;
printf("Too much parameters.\n");
printf("Usage:\n%s\n", cmdtp->usage);
break;
}
return rc;
}
U_BOOT_CMD(
clk, 3, 1, do_clkops,
"Clock sub system",
"Setup/Display clock\n"
"clk - Display all clocks\n"
"clk core <core clock in MHz> - Setup/Display core clock\n"
"clk periph <peripheral clock in MHz> -"
"Setup/Display peripheral clock\n"
"clk ddr <DDR clock in MHz> - Setup/Display DDR clock\n"
"clk nfc <NFC clk in MHz> - Setup/Display NFC clock\n"
"Example:\n"
"clk - Show various clocks\n"
"clk core 665 - Set core clock to 665MHz\n"
"clk periph 600 - Set peripheral clock to 600MHz\n"
"clk ddr 166 - Set DDR clock to 166MHz");
|
