Eric Lee / smarc-uboot

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cmd/clk.c 1.71 KB
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83d290c56   Tom Rini   SPDX: Convert all... 
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  // SPDX-License-Identifier: GPL-2.0+
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  /*
   * Copyright (C) 2013 Xilinx, Inc.
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   */
  #include <common.h>
  #include <command.h>
  #include <clk.h>
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  #if defined(CONFIG_DM) && defined(CONFIG_CLK)
  #include <dm.h>
  #include <dm/device-internal.h>
  #endif
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  int __weak soc_clk_dump(void)
  {
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  #if defined(CONFIG_DM) && defined(CONFIG_CLK)
  	struct udevice *dev;
  	struct uclass *uc;
  	struct clk clk;
  	int ret;
  
  	/* Device addresses start at 1 */
  	ret = uclass_get(UCLASS_CLK, &uc);
  	if (ret)
  		return ret;
  
  	uclass_foreach_dev(dev, uc) {
  		memset(&clk, 0, sizeof(clk));
  		ret = device_probe(dev);
  		if (ret) {
  			printf("%-30.30s : ? Hz
  ", dev->name);
  			continue;
  		}
  
  		ret = clk_request(dev, &clk);
  		if (ret) {
  			printf("%-30.30s : ? Hz
  ", dev->name);
  			continue;
  		}
  
  		printf("%-30.30s : %lu Hz
  ", dev->name, clk_get_rate(&clk));
  
  		clk_free(&clk);
  	}
  
  	return 0;
  #else
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  	puts("Not implemented
  ");
  	return 1;
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  #endif
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  }
  
  static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
  		       char *const argv[])
  {
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  	int ret;
  
  	ret = soc_clk_dump();
  	if (ret < 0) {
  		printf("Clock dump error %d
  ", ret);
  		ret = CMD_RET_FAILURE;
  	}
  
  	return ret;
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  }
  
  static cmd_tbl_t cmd_clk_sub[] = {
  	U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""),
  };
  
  static int do_clk(cmd_tbl_t *cmdtp, int flag, int argc,
  		  char *const argv[])
  {
  	cmd_tbl_t *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";
  #endif
  
  U_BOOT_CMD(clk, 2, 1, do_clk, "CLK sub-system", clk_help_text);