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, 48 insertions, 0 deletions

diff --git a/kernel/arch/arm/mach-ux500/timer.c b/kernel/arch/arm/mach-ux500/timer.c
new file mode 100644
index 000000000..ff28d8ad1
--- /dev/null
+++ b/kernel/arch/arm/mach-ux500/timer.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2011
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson
+ */
+#include <linux/io.h>
+#include <linux/errno.h>
+#include <linux/clksrc-dbx500-prcmu.h>
+#include <linux/clocksource.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include "setup.h"
+
+#include "db8500-regs.h"
+#include "id.h"
+
+static const struct of_device_id prcmu_timer_of_match[] __initconst = {
+	{ .compatible = "stericsson,db8500-prcmu-timer-4", },
+	{ },
+};
+
+void __init ux500_timer_init(void)
+{
+	void __iomem *prcmu_timer_base;
+	void __iomem *tmp_base;
+	struct device_node *np;
+
+	if (cpu_is_u8500_family() || cpu_is_ux540_family())
+		prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
+	else
+		ux500_unknown_soc();
+
+	np = of_find_matching_node(NULL, prcmu_timer_of_match);
+	if (!np)
+		goto dt_fail;
+
+	tmp_base = of_iomap(np, 0);
+	if (!tmp_base)
+		goto dt_fail;
+
+	prcmu_timer_base = tmp_base;
+
+dt_fail:
+	clksrc_dbx500_prcmu_init(prcmu_timer_base);
+	clocksource_of_init();
+}