i.MX27 family: Add the Phytec PCM970 evaluation board

The Phytec phyCORE-i.MX27 CPU module is delivered with the PCM970
baseboard by default. This patch adds support for the hardware.

This code is only an empty stub; it is filled up with functionality
in a later patch series.

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>

arch/arm/mach-mx2/Kconfig

@@ -23,3 +23,17 @@ config MACH_PCM038
 	help
 	  Include support for phyCORE-i.MX27 (aka pcm038) platform. This
 	  includes specific configurations for the module and its peripherals.
+
+choice
+	prompt "Baseboard"
+	depends on MACH_PCM038
+	default MACH_PCM970_BASEBOARD
+
+config MACH_PCM970_BASEBOARD
+	prompt "PHYTEC PCM970 development board"
+	bool
+	help
+	  This adds board specific devices that can be found on Phytec's
+	  PCM970 evaluation board.
+
+endchoice

arch/arm/mach-mx2/Makefile

@@ -11,3 +11,4 @@ obj-$(CONFIG_MACH_MX27) += clock_imx27.o
 
 obj-$(CONFIG_MACH_MX27ADS) += mx27ads.o
 obj-$(CONFIG_MACH_PCM038) += pcm038.o
+obj-$(CONFIG_MACH_PCM970_BASEBOARD) += pcm970-baseboard.o

arch/arm/mach-mx2/pcm038.c

@@ -177,6 +177,10 @@ static void __init pcm038_init(void)
 		imx_init_uart(i, &uart_pdata[i]);
 
 	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+
+#ifdef CONFIG_MACH_PCM970_BASEBOARD
+	pcm970_baseboard_init();
+#endif
 }
 
 static void __init pcm038_timer_init(void)

arch/arm/mach-mx2/pcm970-baseboard.c

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
+ *
+ * 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.
+ * 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 Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#include <linux/platform_device.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+/*
+ * system init for baseboard usage. Will be called by pcm038 init.
+ *
+ * Add platform devices present on this baseboard and init
+ * them from CPU side as far as required to use them later on
+ */
+void __init pcm970_baseboard_init(void)
+{
+}

include/asm-arm/arch-mxc/board-pcm038.h

@@ -30,7 +30,12 @@
  * its own devices, it calls baseboard's init function.
  * TODO: Add your own baseboard init function and call it from
  * inside pcm038_init().
+ *
+ * This example here is for the development board. Refer pcm970-baseboard.c
  */
+
+extern void pcm970_baseboard_init(void);
+
 #endif
 
 #endif /* __ASM_ARCH_MXC_BOARD_PCM038_H__ */