[PATCH 3/7] Samsung: SMDKV210 - Add basic Device Tree Support This patch enables the SMDKV210 to boot using the device tree method. The board initialisation routines are moved to a seperate file for device tree probing.When device tree is not enabled, the board boots with the normal boot mechanism.

[Shaju Abraham]

Signed-off-by: Shaju Abraham <shaju.abraham at linaro.org>
---
 arch/arm/Kconfig                         |    8 ++
 arch/arm/mach-s5pv210/Kconfig            |   15 ++++
 arch/arm/mach-s5pv210/Makefile           |    1 +
 arch/arm/mach-s5pv210/mach-smdkv210_dt.c |  121 ++++++++++++++++++++++++++++++
 4 files changed, 145 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/mach-s5pv210/mach-smdkv210_dt.c

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a63f7c2..dd721fd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1383,6 +1383,14 @@ endmenu
 
 menu "Boot options"
 
+config USE_OF
+        bool "Flattened Device Tree support"
+        select OF
+        select OF_FLATTREE
+        help
+          Include support for flattened device tree machine descriptions.
+
+
 config ARM_EMBEDDED_DTB
 	string "Embedded device tree blob" if OF
 	default ""
diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
index 307a21d..74a6cbe 100644
--- a/arch/arm/mach-s5pv210/Kconfig
+++ b/arch/arm/mach-s5pv210/Kconfig
@@ -78,6 +78,21 @@ config MACH_SMDKV210
 	help
 	  Machine support for Samsung SMDKV210
 
+config MACH_SMDKV210_DT
+       bool "SMDKV210-DT"
+       select OF
+       select OF_FLATTREE
+       select CPU_S5PV210
+       select ARCH_SPARSEMEM_ENABLE
+       select SAMSUNG_DEV_ADC
+       select SAMSUNG_DEV_TS
+       select S3C_DEV_WDT
+       select HAVE_S3C2410_WATCHDOG
+       help
+         Machine support for Samsung SMDKV210-Device Tree
+
+
+
 config MACH_SMDKC110
 	bool "SMDKC110"
 	select CPU_S5PV210
diff --git a/arch/arm/mach-s5pv210/Makefile b/arch/arm/mach-s5pv210/Makefile
index 74dbd76..f0944a9 100644
--- a/arch/arm/mach-s5pv210/Makefile
+++ b/arch/arm/mach-s5pv210/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_S5PV210_USE_NONCOMMON_STRUCT_CLK) += clock.o
 
 obj-$(CONFIG_MACH_AQUILA)	+= mach-aquila.o
 obj-$(CONFIG_MACH_SMDKV210)	+= mach-smdkv210.o
+obj-$(CONFIG_MACH_SMDKV210_DT) += mach-smdkv210_dt.o
 obj-$(CONFIG_MACH_SMDKC110)	+= mach-smdkc110.o
 obj-$(CONFIG_MACH_GONI)		+= mach-goni.o
 
diff --git a/arch/arm/mach-s5pv210/mach-smdkv210_dt.c b/arch/arm/mach-s5pv210/mach-smdkv210_dt.c
new file mode 100644
index 0000000..679401b
--- /dev/null
+++ b/arch/arm/mach-s5pv210/mach-smdkv210_dt.c
@@ -0,0 +1,121 @@
+/* linux/arch/arm/mach-s5pv210/mach-smdkv210_dt.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/dm9000.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_fdt.h>
+#include <linux/of_clk.h>
+
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+
+
+#include <asm/mach/arch.h>
+#include <asm/hardware/vic.h>
+#include <asm/mach/map.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+
+#include <mach/map.h>
+
+#include <mach/regs-clock.h>
+
+#include <plat/regs-serial.h>
+#include <plat/s5pv210.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/adc.h>
+#include <plat/ts.h>
+
+
+
+/* Following are default values for UCON, ULCON and UFCON UART registers */
+#define SMDKV210_UCON_DEFAULT	(S3C2410_UCON_TXILEVEL |	\
+				 S3C2410_UCON_RXILEVEL |	\
+				 S3C2410_UCON_TXIRQMODE |	\
+				 S3C2410_UCON_RXIRQMODE |	\
+				 S3C2410_UCON_RXFIFO_TOI |	\
+				 S3C2443_UCON_RXERR_IRQEN)
+
+#define SMDKV210_ULCON_DEFAULT	S3C2410_LCON_CS8
+
+#define SMDKV210_UFCON_DEFAULT	(S3C2410_UFCON_FIFOMODE |	\
+				 S5PV210_UFCON_TXTRIG4 |	\
+				 S5PV210_UFCON_RXTRIG4)
+
+static struct s3c2410_uartcfg smdkv210_uartcfgs[] __initdata = {
+	[0] = {
+		.hwport		= 0,
+		.flags		= 0,
+		.ucon		= SMDKV210_UCON_DEFAULT,
+		.ulcon		= SMDKV210_ULCON_DEFAULT,
+		.ufcon		= SMDKV210_UFCON_DEFAULT,
+	},
+	[1] = {
+		.hwport		= 1,
+		.flags		= 0,
+		.ucon		= SMDKV210_UCON_DEFAULT,
+		.ulcon		= SMDKV210_ULCON_DEFAULT,
+		.ufcon		= SMDKV210_UFCON_DEFAULT,
+	},
+	[2] = {
+		.hwport		= 2,
+		.flags		= 0,
+		.ucon		= SMDKV210_UCON_DEFAULT,
+		.ulcon		= SMDKV210_ULCON_DEFAULT,
+		.ufcon		= SMDKV210_UFCON_DEFAULT,
+	},
+	[3] = {
+		.hwport		= 3,
+		.flags		= 0,
+		.ucon		= SMDKV210_UCON_DEFAULT,
+		.ulcon		= SMDKV210_ULCON_DEFAULT,
+		.ufcon		= SMDKV210_UFCON_DEFAULT,
+	},
+};
+
+
+
+static void __init smdkv210_map_io(void)
+{
+	s5p_init_io(NULL, 0, S5P_VA_CHIPID);
+	s3c24xx_init_clocks(24000000);
+	s3c24xx_init_uarts(smdkv210_uartcfgs, ARRAY_SIZE(smdkv210_uartcfgs));
+}
+
+static void __init smdkv210_dt_init(void)
+{
+	struct device_node *node;
+	of_clk_fixed_parse();
+	of_platform_bus_probe(NULL, NULL, NULL);
+}
+
+static int __init smdkv210_dt_probe(unsigned long dt)
+{
+	if (!of_flat_dt_is_compatible(dt, "samsung,smdkv210"))
+		return 0;
+
+	return 1;
+}
+
+DT_MACHINE_START(SMDKV210, "SMDKV210 (Device Tree Support)")
+	.boot_params	= 0x00000100,
+	.map_io		= smdkv210_map_io,
+	.init_irq	= s5pv210_init_irq,
+	.init_machine	= smdkv210_dt_init,
+	.timer		= &s3c24xx_timer,
+	.probe_dt	= smdkv210_dt_probe,
+MACHINE_END
-- 
1.7.2