ARM: shmobile: marzen: Reference DT implementation

Provide alternate board code for the marzen to demonstrate
how DT may be used given the current state of driver
device tree support. This is intended to act as a reference
for mach-shmobile developers.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

3 files changed, 89 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 9255546e7bf..b15d4ffcd9a 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -102,6 +102,19 @@ config MACH_MARZEN
 	select ARCH_REQUIRE_GPIOLIB
 	select REGULATOR_FIXED_VOLTAGE if REGULATOR
 
+config MACH_MARZEN_REFERENCE
+	bool "MARZEN board - Reference Device Tree Implementation"
+	depends on ARCH_R8A7779
+	select ARCH_REQUIRE_GPIOLIB
+	select REGULATOR_FIXED_VOLTAGE if REGULATOR
+	select USE_OF
+	---help---
+	   Use reference implementation of Marzen board support
+	   which makes use of device tree at the expense
+	   of not supporting a number of devices.
+
+	   This is intended to aid developers
+
 config MACH_KZM9D
 	bool "KZM9D board"
 	depends on ARCH_EMEV2
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index b646ff4d742..3705d4f7096 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -38,6 +38,7 @@ obj-$(CONFIG_MACH_MACKEREL)	+= board-mackerel.o
 obj-$(CONFIG_MACH_KOTA2)	+= board-kota2.o
 obj-$(CONFIG_MACH_BONITO)	+= board-bonito.o
 obj-$(CONFIG_MACH_MARZEN)	+= board-marzen.o
+obj-$(CONFIG_MACH_MARZEN_REFERENCE)	+= board-marzen-reference.o
 obj-$(CONFIG_MACH_ARMADILLO800EVA)	+= board-armadillo800eva.o
 obj-$(CONFIG_MACH_KZM9D)	+= board-kzm9d.o
 obj-$(CONFIG_MACH_KZM9G)	+= board-kzm9g.o
diff --git a/arch/arm/mach-shmobile/board-marzen-reference.c b/arch/arm/mach-shmobile/board-marzen-reference.c
new file mode 100644
index 00000000000..480d882e42c
--- /dev/null
+++ b/arch/arm/mach-shmobile/board-marzen-reference.c
@@ -0,0 +1,75 @@
+/*
+ * marzen board support - Reference DT implementation
+ *
+ * Copyright (C) 2011  Renesas Solutions Corp.
+ * Copyright (C) 2011  Magnus Damm
+ * Copyright (C) 2013  Simon Horman
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/pinctrl/machine.h>
+#include <mach/r8a7779.h>
+#include <mach/common.h>
+#include <mach/irqs.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+
+static const struct pinctrl_map marzen_pinctrl_map[] = {
+	/* SCIF2 (CN18: DEBUG0) */
+	PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.2", "pfc-r8a7779",
+				  "scif2_data_c", "scif2"),
+	/* SCIF4 (CN19: DEBUG1) */
+	PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.4", "pfc-r8a7779",
+				  "scif4_data", "scif4"),
+	/* SDHI0 */
+	PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_sdhi.0", "pfc-r8a7779",
+				  "sdhi0_data4", "sdhi0"),
+	PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_sdhi.0", "pfc-r8a7779",
+				  "sdhi0_ctrl", "sdhi0"),
+	PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_sdhi.0", "pfc-r8a7779",
+				  "sdhi0_cd", "sdhi0"),
+	PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_sdhi.0", "pfc-r8a7779",
+				  "sdhi0_wp", "sdhi0"),
+	/* SMSC */
+	PIN_MAP_MUX_GROUP_DEFAULT("smsc911x", "pfc-r8a7779",
+				  "intc_irq1_b", "intc"),
+	PIN_MAP_MUX_GROUP_DEFAULT("smsc911x", "pfc-r8a7779",
+				  "lbsc_ex_cs0", "lbsc"),
+};
+
+static void __init marzen_init(void)
+{
+	pinctrl_register_mappings(marzen_pinctrl_map,
+				  ARRAY_SIZE(marzen_pinctrl_map));
+	r8a7779_pinmux_init();
+
+	r8a7779_add_standard_devices_dt();
+}
+
+static const char *marzen_boards_compat_dt[] __initdata = {
+	"renesas,marzen-reference",
+	NULL,
+};
+
+DT_MACHINE_START(MARZEN, "marzen")
+	.smp		= smp_ops(r8a7779_smp_ops),
+	.map_io		= r8a7779_map_io,
+	.init_early	= r8a7779_init_delay,
+	.nr_irqs	= NR_IRQS_LEGACY,
+	.init_irq	= r8a7779_init_irq_dt,
+	.init_machine	= marzen_init,
+	.init_time	= shmobile_timer_init,
+	.dt_compat	= marzen_boards_compat_dt,
+MACHINE_END