ARM i.MX25: Add devicetree support

This adds a i.MX25 dt machine descriptor and changes the clock
support to optionally initialize from dt.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/imx25-dt.c b/arch/arm/mach-imx/imx25-dt.c
new file mode 100644
index 00000000000..e17dfbc4219
--- /dev/null
+++ b/arch/arm/mach-imx/imx25-dt.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2012 Sascha Hauer, Pengutronix
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/irq.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include "common.h"
+#include "mx25.h"
+
+static void __init imx25_dt_init(void)
+{
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static void __init imx25_timer_init(void)
+{
+	mx25_clocks_init_dt();
+}
+
+static struct sys_timer imx25_timer = {
+	.init = imx25_timer_init,
+};
+
+static const char * const imx25_dt_board_compat[] __initconst = {
+	"fsl,imx25",
+	NULL
+};
+
+DT_MACHINE_START(IMX25_DT, "Freescale i.MX25 (Device Tree Support)")
+	.map_io		= mx25_map_io,
+	.init_early	= imx25_init_early,
+	.init_irq	= mx25_init_irq,
+	.handle_irq	= imx25_handle_irq,
+	.timer		= &imx25_timer,
+	.init_machine	= imx25_dt_init,
+	.dt_compat	= imx25_dt_board_compat,
+	.restart	= mxc_restart,
+MACHINE_END