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aeeb2e6d9c
The previous code only dump the clk list. This patch is to support clk tree dump, and also dump the enable_cnt. The code used in patch is similar to dm_dump_all, but the code here only filter out the UCLASS_CLK devices. On i.MX8MM, Partial output: u-boot=> clk dump Rate Usecnt Name ------------------------------------------ 24000000 0 |-- clock-osc-24m 24000000 0 | |-- dram_pll_ref_sel 750000000 0 | | `-- dram_pll 750000000 0 | | `-- dram_pll_bypass 750000000 0 | | `-- dram_pll_out 24000000 0 | |-- arm_pll_ref_sel 1200000000 0 | | `-- arm_pll 1200000000 0 | | `-- arm_pll_bypass 1200000000 0 | | `-- arm_pll_out 1200000000 0 | | `-- arm_a53_src 1200000000 0 | | `-- arm_a53_cg 1200000000 0 | | `-- arm_a53_div 24000000 4 | |-- sys_pll1_ref_sel 800000000 4 | | `-- sys_pll1 800000000 4 | | `-- sys_pll1_bypass 800000000 4 | | `-- sys_pll1_out 40000000 0 | | |-- sys_pll1_40m Signed-off-by: Peng Fan <peng.fan@nxp.com>
119 lines
2.2 KiB
C
119 lines
2.2 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.h>
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#include <dm/root.h>
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#include <dm/device-internal.h>
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#include <linux/clk-provider.h>
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#endif
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#if defined(CONFIG_DM) && defined(CONFIG_CLK)
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static void show_clks(struct udevice *dev, int depth, int last_flag)
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{
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int i, is_last;
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struct udevice *child;
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struct clk *clkp;
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u32 rate;
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clkp = dev_get_clk_ptr(dev);
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if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) {
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rate = clk_get_rate(clkp);
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printf(" %-12u %8d ", rate, clkp->enable_count);
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for (i = depth; i >= 0; i--) {
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is_last = (last_flag >> i) & 1;
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if (i) {
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if (is_last)
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printf(" ");
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else
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printf("| ");
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} else {
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if (is_last)
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printf("`-- ");
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else
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printf("|-- ");
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}
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}
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printf("%s\n", dev->name);
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}
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list_for_each_entry(child, &dev->child_head, sibling_node) {
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is_last = list_is_last(&child->sibling_node, &dev->child_head);
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show_clks(child, depth + 1, (last_flag << 1) | is_last);
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}
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}
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int __weak soc_clk_dump(void)
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{
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struct udevice *root;
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root = dm_root();
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if (root) {
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printf(" Rate Usecnt Name\n");
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printf("------------------------------------------\n");
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show_clks(root, -1, 0);
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}
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return 0;
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}
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#else
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int __weak soc_clk_dump(void)
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{
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puts("Not implemented\n");
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return 1;
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}
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#endif
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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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