[PATCH 6/7] OMAP3: board-dt: Add generic board file for DT support

[b-cousson@ti.com (Benoit Cousson)]

Create an OMAP3 generic board to start the DT migration.

This file is doing the minimal initialization needed to boot
properly on a RAMDISK filesystem.

As soon as the OMAP3 specifics will be removed, that board will
be converted to an even more generic board-dt.c that will support
every OMAP2+ platforms.

Based on original patch from Manju:
http://www.spinics.net/lists/linux-omap/msg55832.html

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: G, Manjunath Kondaiah <manjugk@ti.com>
---
 arch/arm/mach-omap2/Kconfig          |   10 +++++
 arch/arm/mach-omap2/Makefile         |    1 +
 arch/arm/mach-omap2/board-omap3-dt.c |   74 ++++++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/mach-omap2/board-omap3-dt.c

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 5d501d2..82f0df2 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -305,6 +305,16 @@ config MACH_OMAP_3630SDP
 	default y
 	select OMAP_PACKAGE_CBP
 
+config MACH_OMAP3_DT
+	bool "Generic OMAP3 board (FDT support)"
+	depends on ARCH_OMAP3
+	select OMAP_PACKAGE_CBB
+	select USE_OF
+	help
+	  Support for generic TI OMAP3 boards using Flattened Device Tree.
+	  Say Y here to enable OMAP3 device tree support
+	  More information at Documentation/devicetree
+
 config MACH_TI8168EVM
 	bool "TI8168 Evaluation Module"
 	depends on SOC_OMAPTI816X
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 6ab9116..5144c17 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -197,6 +197,7 @@ obj-$(CONFIG_MACH_OVERO)		+= board-overo.o
 obj-$(CONFIG_MACH_OMAP3EVM)		+= board-omap3evm.o
 obj-$(CONFIG_MACH_OMAP3_PANDORA)	+= board-omap3pandora.o
 obj-$(CONFIG_MACH_OMAP_3430SDP)		+= board-3430sdp.o
+obj-$(CONFIG_MACH_OMAP3_DT)		+= board-omap3-dt.o
 obj-$(CONFIG_MACH_NOKIA_N8X0)		+= board-n8x0.o
 obj-$(CONFIG_MACH_NOKIA_RM680)		+= board-rm680.o \
 					   sdram-nokia.o
diff --git a/arch/arm/mach-omap2/board-omap3-dt.c b/arch/arm/mach-omap2/board-omap3-dt.c
new file mode 100644
index 0000000..6eb56c6
--- /dev/null
+++ b/arch/arm/mach-omap2/board-omap3-dt.c
@@ -0,0 +1,74 @@
+/*
+ * OMAP3 Device tree boards support
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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/irqdomain.h>
+#include <linux/of_platform.h>
+#include <linux/i2c/twl.h>
+
+#include <asm/mach/arch.h>
+#include <plat/common.h>
+
+#include "mux.h"
+#include "common-board-devices.h"
+#include "sdram-micron-mt46h32m32lf-6.h"
+
+
+static void __init omap3_init_early(void)
+{
+	omap2_init_common_infrastructure();
+	omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
+				  mt46h32m32lf6_sdrc_params);
+}
+
+#ifdef CONFIG_OMAP_MUX
+static struct omap_board_mux board_mux[] __initdata = {
+	{ .reg_offset = OMAP_MUX_TERMINATOR },
+};
+#endif
+
+static struct of_device_id omap_dt_match_table[] __initdata = {
+	{ .compatible = "simple-bus", },
+	{ .compatible = "ti,omap-infra", },
+	{}
+};
+
+static struct of_device_id omap_dt_intc_match[] __initdata = {
+	{ .compatible = "ti,omap3-intc", },
+	{}
+};
+
+static void __init omap3_init(void)
+{
+	struct device_node *node;
+
+	node = of_find_matching_node(NULL, omap_dt_intc_match);
+	if (node)
+		irq_domain_add_simple(node, 0);
+
+	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
+	omap_serial_init();
+
+	of_platform_populate(NULL, omap_dt_match_table, NULL, NULL);
+}
+
+static const char *omap3_dt_match[] __initdata = {
+	"ti,omap3",
+	NULL
+};
+
+DT_MACHINE_START(OMAP3_DT, "TI OMAP3 (Flattened Device Tree)")
+	.reserve	= omap_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap3_init_early,
+	.init_irq	= omap3_init_irq,
+	.init_machine	= omap3_init,
+	.timer		= &omap3_timer,
+	.dt_compat	= omap3_dt_match,
+MACHINE_END
-- 
1.7.0.4