[PATCH 10/10] ARM: clps711x: Add initial DT support

[Alexander Shiyan]

This patch adds initial support for Cirrus Logic CLPS711X based platforms
using the device tree for discovery.
The basic devices is not yet DT-capable, so the CLPS711X DT option is marked
as experimental.

Signed-off-by: Alexander Shiyan <shc_work at mail.ru>
---
 arch/arm/mach-clps711x/Kconfig    |  7 +++++
 arch/arm/mach-clps711x/Makefile   |  1 +
 arch/arm/mach-clps711x/board-dt.c | 56 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 64 insertions(+)
 create mode 100644 arch/arm/mach-clps711x/board-dt.c

diff --git a/arch/arm/mach-clps711x/Kconfig b/arch/arm/mach-clps711x/Kconfig
index bea6295..8ef38c6 100644
--- a/arch/arm/mach-clps711x/Kconfig
+++ b/arch/arm/mach-clps711x/Kconfig
@@ -33,6 +33,13 @@ config ARCH_P720T
 	  Say Y here if you intend to run this kernel on the ARM Prospector
 	  720T.
 
+config CLPS711X_DT
+	bool "Support CLPS711X platforms from device tree (Very Experimental!)"
+	depends on USE_OF
+	help
+	  Include support for Cirrus Logic CLPS711X based platforms
+	  using the device tree for discovery.
+
 config EP72XX_ROM_BOOT
 	bool "EP721x/EP731x ROM boot"
 	help
diff --git a/arch/arm/mach-clps711x/Makefile b/arch/arm/mach-clps711x/Makefile
index f04151e..77d3a76 100644
--- a/arch/arm/mach-clps711x/Makefile
+++ b/arch/arm/mach-clps711x/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_ARCH_CDB89712)	+= board-cdb89712.o
 obj-$(CONFIG_ARCH_CLEP7312)	+= board-clep7312.o
 obj-$(CONFIG_ARCH_EDB7211)	+= board-edb7211.o
 obj-$(CONFIG_ARCH_P720T)	+= board-p720t.o
+obj-$(CONFIG_CLPS711X_DT)	+= board-dt.o
diff --git a/arch/arm/mach-clps711x/board-dt.c b/arch/arm/mach-clps711x/board-dt.c
new file mode 100644
index 0000000..5b6f3f1
--- /dev/null
+++ b/arch/arm/mach-clps711x/board-dt.c
@@ -0,0 +1,56 @@
+/*
+ *  CLPS711X Generic DT board
+ *
+ *  Author: Alexander Shiyan <shc_work at mail.ru>, 2013
+ *
+ * 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.
+ */
+
+#include <linux/clocksource.h>
+#include <linux/clk-provider.h>
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/mach/arch.h>
+
+#include <mach/hardware.h>
+
+#include "common.h"
+
+void __init clps711x_timer_init_dt(void)
+{
+	of_clk_init(NULL);
+	clocksource_of_init();
+}
+
+static struct of_dev_auxdata clps711x_auxdata_lookup[] __initdata = {
+	OF_DEV_AUXDATA("cirrus,clps711x-syscon", CLPS711X_PHYS_BASE + SYSCON1,
+		       "syscon.1", NULL),
+	OF_DEV_AUXDATA("cirrus,clps711x-syscon", CLPS711X_PHYS_BASE + SYSCON2,
+		       "syscon.2", NULL),
+	OF_DEV_AUXDATA("cirrus,clps711x-syscon", CLPS711X_PHYS_BASE + SYSCON3,
+		       "syscon.3", NULL),
+	{ }
+};
+
+static void __init clps711x_init_dt(void)
+{
+	of_platform_populate(NULL, of_default_bus_match_table,
+			     clps711x_auxdata_lookup, NULL);
+}
+
+static const char *clps711x_dt_compat[] __initdata = {
+	"cirrus,clps711x",
+	NULL
+};
+
+DT_MACHINE_START(CLPS711X_DT, "Cirrus Logic CLPS711X (Device Tree Support)")
+	.dt_compat	= clps711x_dt_compat,
+	.map_io		= clps711x_map_io,
+	.init_time	= clps711x_timer_init,
+	.init_machine	= clps711x_init_dt,
+	.restart	= clps711x_restart,
+MACHINE_END
-- 
1.8.1.5