123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2013 Xilinx, Inc.
- */
- #include <common.h>
- #include <command.h>
- #include <clk.h>
- #if defined(CONFIG_DM) && defined(CONFIG_CLK)
- #include <dm.h>
- #include <dm/device.h>
- #include <dm/root.h>
- #include <dm/device-internal.h>
- #include <linux/clk-provider.h>
- #endif
- #if defined(CONFIG_DM) && defined(CONFIG_CLK)
- static void show_clks(struct udevice *dev, int depth, int last_flag)
- {
- int i, is_last;
- struct udevice *child;
- struct clk *clkp, *parent;
- u32 rate;
- clkp = dev_get_clk_ptr(dev);
- if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) {
- parent = clk_get_parent(clkp);
- if (!IS_ERR(parent) && depth == -1)
- return;
- depth++;
- rate = clk_get_rate(clkp);
- printf(" %-12u %8d ", rate, clkp->enable_count);
- for (i = depth; i >= 0; i--) {
- is_last = (last_flag >> i) & 1;
- if (i) {
- if (is_last)
- printf(" ");
- else
- printf("| ");
- } else {
- if (is_last)
- printf("`-- ");
- else
- printf("|-- ");
- }
- }
- printf("%s\n", dev->name);
- }
- list_for_each_entry(child, &dev->child_head, sibling_node) {
- if (child == dev)
- continue;
- is_last = list_is_last(&child->sibling_node, &dev->child_head);
- show_clks(child, depth, (last_flag << 1) | is_last);
- }
- }
- int __weak soc_clk_dump(void)
- {
- struct udevice *dev;
- struct uclass *uc;
- int ret;
- ret = uclass_get(UCLASS_CLK, &uc);
- if (ret)
- return ret;
- printf(" Rate Usecnt Name\n");
- printf("------------------------------------------\n");
- uclass_foreach_dev(dev, uc)
- show_clks(dev, -1, 0);
- return 0;
- }
- #else
- int __weak soc_clk_dump(void)
- {
- puts("Not implemented\n");
- return 1;
- }
- #endif
- static int do_clk_dump(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
- {
- int ret;
- ret = soc_clk_dump();
- if (ret < 0) {
- printf("Clock dump error %d\n", ret);
- ret = CMD_RET_FAILURE;
- }
- return ret;
- }
- #if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK)
- struct udevice *clk_lookup(const char *name)
- {
- int i = 0;
- struct udevice *dev;
- do {
- uclass_get_device(UCLASS_CLK, i++, &dev);
- if (!strcmp(name, dev->name))
- return dev;
- } while (dev);
- return NULL;
- }
- static int do_clk_setfreq(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
- {
- struct clk *clk = NULL;
- s32 freq;
- struct udevice *dev;
- freq = dectoul(argv[2], NULL);
- dev = clk_lookup(argv[1]);
- if (dev)
- clk = dev_get_clk_ptr(dev);
- if (!clk) {
- printf("clock '%s' not found.\n", argv[1]);
- return -EINVAL;
- }
- freq = clk_set_rate(clk, freq);
- if (freq < 0) {
- printf("set_rate failed: %d\n", freq);
- return CMD_RET_FAILURE;
- }
- printf("set_rate returns %u\n", freq);
- return 0;
- }
- #endif
- static struct cmd_tbl cmd_clk_sub[] = {
- U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""),
- #if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK)
- U_BOOT_CMD_MKENT(setfreq, 3, 1, do_clk_setfreq, "", ""),
- #endif
- };
- static int do_clk(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
- {
- struct cmd_tbl *c;
- if (argc < 2)
- return CMD_RET_USAGE;
- /* Strip off leading 'clk' command argument */
- argc--;
- argv++;
- c = find_cmd_tbl(argv[0], &cmd_clk_sub[0], ARRAY_SIZE(cmd_clk_sub));
- if (c)
- return c->cmd(cmdtp, flag, argc, argv);
- else
- return CMD_RET_USAGE;
- }
- #ifdef CONFIG_SYS_LONGHELP
- static char clk_help_text[] =
- "dump - Print clock frequencies\n"
- "setfreq [clk] [freq] - Set clock frequency";
- #endif
- U_BOOT_CMD(clk, 4, 1, do_clk, "CLK sub-system", clk_help_text);
|