[U-Boot] [PATCH] arm: RFC: add clock speed constants

[Simon Glass]

Large-value clock speeds are error-prone, so we add a new file which defines
these in a standard manner across ARM U-Boot code.

Any interest in having something like this in include/clocks.h?

Tested-by: Simon Glass <sjg at chromium.org>
Signed-off-by: Simon Glass <sjg at chromium.org>
---
 arch/arm/include/asm/clocks.h |   43 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 43 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/include/asm/clocks.h

diff --git a/arch/arm/include/asm/clocks.h b/arch/arm/include/asm/clocks.h
new file mode 100644
index 0000000..58cf838
--- /dev/null
+++ b/arch/arm/include/asm/clocks.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * 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
+ */
+
+/* Standard clock speeds */
+
+/*
+ * We define some commonly-used clock speeds to avoid error since long
+ * numbers are hard to read.
+ *
+ * The format of the label is
+ * CLK_x_yU where:
+ *	x is the integer speed
+ *	y is the fractional part which can be omitted if 0
+ *	U is the units (blank for Hz, K or M for KHz and MHz)
+ *
+ * Please order the items by increasing Hz
+ */
+enum {
+	CLK_32768	= 32768,
+	CLK_20M		= 20000000,
+	CLK_24M		= 24000000,
+	CLK_144M	= 144000000,
+	CLK_216M	= 216000000,
+	CLK_300M	= 300000000,
+};
-- 
1.7.3.1