66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
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#include <common.h>
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#include <command.h>
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#include <getopt.h>
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#include <asm/arch/imx-regs.h>
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static int do_clko (cmd_tbl_t *cmdtp, int argc, char *argv[])
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{
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int opt, div = 0, src = -2;
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getopt_reset();
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while((opt = getopt(argc, argv, "d:s:")) > 0) {
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switch(opt) {
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case 'd':
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div = simple_strtoul(optarg, NULL, 0);
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break;
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case 's':
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src = simple_strtoul(optarg, NULL, 0);
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break;
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}
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}
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if (div == 0 && src == -2) {
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u_boot_cmd_usage(cmdtp);
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return 0;
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}
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if (src == -1) {
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PCDR0 &= ~(1 << 25);
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return 0;
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}
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if (src != -2) {
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ulong ccsr;
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ccsr = CCSR & ~0x1f;
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ccsr |= src & 0x1f;
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CCSR = ccsr;
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}
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if (div != 0) {
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ulong pcdr;
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div--;
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pcdr = PCDR0 & ~(7 << 22);
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pcdr |= (div & 0x7) << 22;
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PCDR0 = pcdr;
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}
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PCDR0 |= (1 << 25);
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return 0;
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}
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static __maybe_unused char cmd_clko_help[] =
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"Usage: clko [OPTION]...\n"
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"Route different signals to the i.MX clko pin\n"
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" -d <div> Divider (1..8)\n"
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" -s <source> Clock select. See Ref. Manual for valid sources. Use -1\n"
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" for disabling clock output\n";
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U_BOOT_CMD_START(clko)
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.maxargs = CONFIG_MAXARGS,
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.cmd = do_clko,
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.usage = "Adjust CLKO setting",
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U_BOOT_CMD_HELP(cmd_clko_help)
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U_BOOT_CMD_END
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