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authorTerry Lv <r65388@freescale.com>2010-05-07 21:19:41 +0800
committerTerry Lv <r65388@freescale.com>2010-05-11 14:28:22 +0800
commit9667c8061fcfe407b2fa2055b09e0509dc7cc041 (patch)
tree179c41decd496409792ce15120001e585cfaf5eb /common
parentbd4a694934e348acb930f05fe25dcee6b53b3685 (diff)
ENGR00123278: Support clock operation functions
Support clock operation functions. Signed-off-by: Terry Lv <r65388@freescale.com>
Diffstat (limited to 'common')
-rw-r--r--common/Makefile1
-rw-r--r--common/cmd_clk.c76
-rw-r--r--common/cmd_mmc.c2
3 files changed, 78 insertions, 1 deletions
diff --git a/common/Makefile b/common/Makefile
index 37629a75e..3b8ef59de 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -76,6 +76,7 @@ COBJS-$(CONFIG_CMD_BEDBUG) += bedbug.o cmd_bedbug.o
COBJS-$(CONFIG_CMD_BMP) += cmd_bmp.o
COBJS-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o
COBJS-$(CONFIG_CMD_CACHE) += cmd_cache.o
+COBJS-$(CONFIG_CMD_CLOCK) += cmd_clk.o
COBJS-$(CONFIG_CMD_CONSOLE) += cmd_console.o
COBJS-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o
COBJS-$(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
index 000000000..2f81492e5
--- /dev/null
+++ b/common/cmd_clk.c
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
+ * Terry Lv
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <linux/types.h>
+#include <command.h>
+#include <common.h>
+#include <asm/clock.h>
+
+int do_clkops(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ int rc = 0;
+ int freq = 0;
+
+ switch (argc) {
+ case 1:
+ clk_info(ALL_CLK);
+ break;
+ case 2:
+ if (strcmp(argv[1], "core") == 0)
+ clk_info(CPU_CLK);
+ else if (strcmp(argv[1], "ddr") == 0)
+ clk_info(DDR_CLK);
+ else
+ printf("Unsupported clock type!\n");
+ break;
+ case 3:
+ freq = simple_strtoul(argv[2], NULL, 10);
+ if (strcmp(argv[1], "core") == 0)
+ clk_config(CONFIG_REF_CLK_FREQ, freq, CPU_CLK);
+ else if (strcmp(argv[1], "ddr") == 0)
+ clk_config(CONFIG_REF_CLK_FREQ, freq, DDR_CLK);
+ else
+ printf("Unsupported clock type!\n");
+ break;
+ default:
+ rc = 1;
+ printf("Too much parameters.\n");
+ printf("Usage:\n%s\n", cmdtp->usage);
+ break;
+ }
+
+ return rc;
+}
+
+U_BOOT_CMD(
+ clk, 3, 1, do_clkops,
+ "Clock sub system",
+ "Setup/Display clock\n"
+ "clk - Display all clocks\n"
+ "clk core <core clock in MHz> - Setup/Display core clock\n"
+ "clk ddr <DDR clock in MHz> - Setup/Display DDR clock\n"
+ "Example:\n"
+ "clk - Show various clocks\n"
+ "clk core 665 - Set core clock to 665MHz\n"
+ "clk ddr 166 - Set DDR clock to 166MHz");
+
diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index b8d494b61..cd7d16f7d 100644
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -179,7 +179,7 @@ int do_mmcinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
}
U_BOOT_CMD(mmcinfo, 2, 0, do_mmcinfo,
- "mmcinfo <dev num>-- display MMC info\n",
+ "mmcinfo <dev num>-- display MMC info",
""
);