common: Add new clk command

Command provides just dump subcommand for showing clock
frequencies in a soc.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Stefano Babic <sbabic@denx.de>

diff --git a/README b/README
index 176de61a331c36582cd6f1c2791e36c5e74ec382..ba4be660be9caf670948b378c51bd572ea377493 100644 (file)
--- a/README
+++ b/README
@@ -896,6 +896,7 @@ The following options need to be configured:
                CONFIG_CMD_BSP          * Board specific commands
                CONFIG_CMD_BOOTD          bootd
                CONFIG_CMD_CACHE        * icache, dcache
+               CONFIG_CMD_CLK          * clock command support
                CONFIG_CMD_CONSOLE        coninfo
                CONFIG_CMD_CRC32        * crc32
                CONFIG_CMD_DATE         * support for RTC, date/time...

diff --git a/common/Makefile b/common/Makefile
index 4d99ecd6168cb32f61c872f453cf1ef7cc16ffcc..a83246ee27b293944819fc01be0ce90b22f82c87 100644 (file)
--- a/common/Makefile
+++ b/common/Makefile
@@ -59,6 +59,7 @@ obj-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o
 obj-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o
 obj-$(CONFIG_CMD_CACHE) += cmd_cache.o
 obj-$(CONFIG_CMD_CBFS) += cmd_cbfs.o
+obj-$(CONFIG_CMD_CLK) += cmd_clk.o
 obj-$(CONFIG_CMD_CONSOLE) += cmd_console.o
 obj-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o
 obj-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o

diff --git a/common/cmd_clk.c b/common/cmd_clk.c
new file mode 100644 (file)
index 0000000..6d3d46a
--- /dev/null
+++ b/common/cmd_clk.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2013 Xilinx, Inc.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+#include <common.h>
+#include <command.h>
+#include <clk.h>
+
+int __weak soc_clk_dump(void)
+{
+       puts("Not implemented\n");
+       return 1;
+}
+
+static int do_clk_dump(cmd_tbl_t *cmdtp, int flag, int argc,
+                      char *const argv[])
+{
+       return soc_clk_dump();
+}
+
+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);

diff --git a/include/clk.h b/include/clk.h
new file mode 100644 (file)
index 0000000..df4570c
--- /dev/null
+++ b/include/clk.h
@@ -0,0 +1,6 @@
+#ifndef _CLK_H_
+#define _CLK_H_
+
+int soc_clk_dump(void);
+
+#endif /* _CLK_H_ */

diff --git a/include/config_cmd_all.h b/include/config_cmd_all.h
index d84706969d1b4117705c7bc8752be2976ca413bd..3e8983f2443c7c60dc1841bfb904a8040e46892f 100644 (file)
--- a/include/config_cmd_all.h
+++ b/include/config_cmd_all.h
@@ -23,6 +23,7 @@
 #define CONFIG_CMD_BSP         /* Board Specific functions     */
 #define CONFIG_CMD_CACHE       /* icache, dcache               */
 #define CONFIG_CMD_CDP         /* Cisco Discovery Protocol     */
+#define CONFIG_CMD_CLK         /* Clock support                */
 #define CONFIG_CMD_CONSOLE     /* coninfo                      */
 #define CONFIG_CMD_DATE                /* support for RTC, date/time...*/
 #define CONFIG_CMD_DHCP                /* DHCP Support                 */