Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/kernel/arch/mips/ar7/time.c b/kernel/arch/mips/ar7/time.c
new file mode 100644
index 000000000..22c93213b
--- /dev/null
+++ b/kernel/arch/mips/ar7/time.c
@@ -0,0 +1,43 @@
+/*
+ * Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ * Setting up the clock on the MIPS boards.
+ */
+
+#include <linux/init.h>
+#include <linux/time.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+
+#include <asm/time.h>
+#include <asm/mach-ar7/ar7.h>
+
+void __init plat_time_init(void)
+{
+	struct clk *cpu_clk;
+
+	/* Initialize ar7 clocks so the CPU clock frequency is correct */
+	ar7_init_clocks();
+
+	cpu_clk = clk_get(NULL, "cpu");
+	if (IS_ERR(cpu_clk)) {
+		printk(KERN_ERR "unable to get cpu clock\n");
+		return;
+	}
+
+	mips_hpt_frequency = clk_get_rate(cpu_clk) / 2;
+}