MXC: mach-mx31_3ds: Add support for on board NAND Flash.

Since the using of Bad Block Table is not constantly a good behave
I had made it configurable.

Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 22 insertions, 0 deletions

diff --git a/arch/arm/mach-mx3/Kconfig b/arch/arm/mach-mx3/Kconfig
index 3872af1cf2c..9a2911e004a 100644
--- a/arch/arm/mach-mx3/Kconfig
+++ b/arch/arm/mach-mx3/Kconfig
@@ -62,6 +62,15 @@ config MACH_MX31_3DS
           Include support for MX31PDK (3DS) platform. This includes specific
           configurations for the board and its peripherals.
 
+config MACH_MX31_3DS_MXC_NAND_USE_BBT
+        bool "Make the MXC NAND driver use the in flash Bad Block Table"
+        depends on MACH_MX31_3DS
+        depends on MTD_NAND_MXC
+        help
+          Enable this if you want that the MXC NAND driver uses the in flash
+          Bad Block Table to know what blocks are bad instead of scanning the
+          entire flash looking for bad block markers.
+
 config MACH_MX31MOBOARD
         bool "Support mx31moboard platforms (EPFL Mobots group)"
         select ARCH_MX31
diff --git a/arch/arm/mach-mx3/mach-mx31_3ds.c b/arch/arm/mach-mx3/mach-mx31_3ds.c
index 4a94c3c4948..bf1f54a31c4 100644
--- a/arch/arm/mach-mx3/mach-mx31_3ds.c
+++ b/arch/arm/mach-mx3/mach-mx31_3ds.c
@@ -34,6 +34,7 @@
 #include <mach/board-mx31_3ds.h>
 #include <mach/imx-uart.h>
 #include <mach/iomux-mx3.h>
+#include <mach/mxc_nand.h>
 #include "devices.h"
 
 /*!
@@ -53,6 +54,17 @@ static int mx31_3ds_pins[] = {
         IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
 };
 
+/*
+ * NAND Flash
+ */
+static struct mxc_nand_platform_data imx31_3ds_nand_flash_pdata = {
+        .width          = 1,
+        .hw_ecc         = 1,
+#ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
+        .flash_bbt      = 1,
+#endif
+};
+
 static struct imxuart_platform_data uart_pdata = {
         .flags = IMXUART_HAVE_RTSCTS,
 };
@@ -236,6 +248,7 @@ static void __init mxc_board_init(void)
                                       "mx31_3ds");
 
         mxc_register_device(&mxc_uart_device0, &uart_pdata);
+        mxc_register_device(&mxc_nand_device, &imx31_3ds_nand_flash_pdata);
 
         if (!mx31_3ds_init_expio())
                 platform_device_register(&smsc911x_device);