mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 04:23:46 +00:00
80b44fb376
clk_get_rate may return -ENODEV if the clock isn't valid.
Also, make the error cases go through a single path.
Fixes: ff8eee0330 ("cmd: clk: Add trivial implementation of clock dump
for DM")
Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
99 lines
1.7 KiB
C
99 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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ulong rate;
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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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goto noclk;
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ret = clk_request(dev, &clk);
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if (ret)
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goto noclk;
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rate = clk_get_rate(&clk);
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clk_free(&clk);
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if (rate == -ENODEV)
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goto noclk;
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printf("%-30.30s : %lu Hz\n", dev->name, rate);
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continue;
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noclk:
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printf("%-30.30s : ? Hz\n", dev->name);
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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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