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https://github.com/smaeul/u-boot.git
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ff8eee0330
Add trivial implementation of the clk dump in case DM is enabled. This implementation just iterates over all the clock registered with the CLK uclass and prints their rate. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Chin Liang See <chin.liang.see@intel.com> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@konsulko.com> Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
96 lines
1.7 KiB
C
96 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2013 Xilinx, Inc.
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*/
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#include <common.h>
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#include <command.h>
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#include <clk.h>
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#if defined(CONFIG_DM) && defined(CONFIG_CLK)
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#include <dm.h>
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#include <dm/device-internal.h>
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#endif
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int __weak soc_clk_dump(void)
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{
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#if defined(CONFIG_DM) && defined(CONFIG_CLK)
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struct udevice *dev;
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struct uclass *uc;
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struct clk clk;
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int ret;
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/* Device addresses start at 1 */
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ret = uclass_get(UCLASS_CLK, &uc);
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if (ret)
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return ret;
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uclass_foreach_dev(dev, uc) {
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memset(&clk, 0, sizeof(clk));
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ret = device_probe(dev);
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if (ret) {
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printf("%-30.30s : ? Hz\n", dev->name);
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continue;
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}
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ret = clk_request(dev, &clk);
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if (ret) {
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printf("%-30.30s : ? Hz\n", dev->name);
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continue;
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}
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printf("%-30.30s : %lu Hz\n", dev->name, clk_get_rate(&clk));
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clk_free(&clk);
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}
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return 0;
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#else
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puts("Not implemented\n");
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return 1;
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#endif
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}
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static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int ret;
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ret = soc_clk_dump();
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if (ret < 0) {
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printf("Clock dump error %d\n", ret);
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ret = CMD_RET_FAILURE;
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}
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return ret;
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}
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static cmd_tbl_t cmd_clk_sub[] = {
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U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""),
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};
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static int do_clk(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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cmd_tbl_t *c;
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if (argc < 2)
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return CMD_RET_USAGE;
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/* Strip off leading 'clk' command argument */
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argc--;
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argv++;
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c = find_cmd_tbl(argv[0], &cmd_clk_sub[0], ARRAY_SIZE(cmd_clk_sub));
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if (c)
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return c->cmd(cmdtp, flag, argc, argv);
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else
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return CMD_RET_USAGE;
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}
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#ifdef CONFIG_SYS_LONGHELP
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static char clk_help_text[] =
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"dump - Print clock frequencies";
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#endif
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U_BOOT_CMD(clk, 2, 1, do_clk, "CLK sub-system", clk_help_text);
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