Merge remote branch 'origin/omap' into next

5 files changed, 137 insertions, 244 deletions

diff --git a/board/omap/Kconfig b/board/omap/Kconfig
index 361bed436f..d612064710 100644
--- a/board/omap/Kconfig
+++ b/board/omap/Kconfig
@@ -90,73 +90,4 @@ config MACH_OMAP_ADVANCED_MUX
 config HAS_OMAP_NAND
 	bool
 
-
-menuconfig MACH_OMAP_GPMC_NAND
-	tristate "Enable NAND device support for GPMC"
-	depends on HAS_OMAP_NAND
-	default n
-	help
-	  Say Y here if you would like to have NAND device support
-
-if MACH_OMAP_GPMC_NAND
-# Single definition used to club all generic definitions together
-config MACH_OMAP_GPMC_GENERICNAND
-	bool
-
-choice
-	prompt "Select NAND Device"
-
-config MACH_OMAP_GPMC_GENERICNAND_LP_X8
-	tristate "Enable 8 bit Large page nand"
-	depends on MACH_OMAP_GPMC_NAND
-	select MACH_OMAP_GPMC_GENERICNAND
-	help
-	  Say Y here if you would support for 8 bit NAND
-	  with large page
-	  NOTE: The timing parameter are the most relaxed
-	  If you need optimized timing, selec appropriate
-	  supported NAND flash
-
-config MACH_OMAP_GPMC_GENERICNAND_LP_X16
-	tristate "Enable 16 bit Large page nand"
-	depends on MACH_OMAP_GPMC_NAND
-	select MACH_OMAP_GPMC_GENERICNAND
-	help
-	  Say Y here if you would support for 16 bit NAND
-	  with large page
-	  NOTE: The timing parameter are the most relaxed
-	  If you need optimized timing, selec appropriate
-	  supported NAND flash
-
-config MACH_OMAP_GPMC_GENERICNAND_SP_X8
-	tristate "Enable 8 bit Small page nand"
-	depends on MACH_OMAP_GPMC_NAND
-	select MACH_OMAP_GPMC_GENERICNAND
-	help
-	  Say Y here if you would support for 8 bit NAND
-	  with small page
-	  NOTE: The timing parameter are the most relaxed
-	  If you need optimized timing, selec appropriate
-	  supported NAND flash
-
-config MACH_OMAP_GPMC_GENERICNAND_SP_X16
-	tristate "Enable 16 bit Small page nand"
-	depends on MACH_OMAP_GPMC_NAND
-	select MACH_OMAP_GPMC_GENERICNAND
-	help
-	  Say Y here if you would support for 16 bit NAND
-	  with small page
-	  NOTE: The timing parameter are the most relaxed
-	  If you need optimized timing, selec appropriate
-	  supported NAND flash
-endchoice
-
-config MACH_OMAP_CS
-	hex "NAND CS"
-	depends on MACH_OMAP_GPMC_NAND
-	default 0x0
-	help
-	  Provide the Chip select of the NAND flash
-endif
-
 endmenu
diff --git a/board/omap/Makefile b/board/omap/Makefile
index b4bb3e1d05..1e74e241b4 100644
--- a/board/omap/Makefile
+++ b/board/omap/Makefile
@@ -24,5 +24,5 @@ obj-$(CONFIG_MACH_DO_LOWLEVEL_INIT) += platform.o
 obj-$(CONFIG_MACH_OMAP343xSDP) += board-sdp343x.o
 obj-$(CONFIG_MACH_BEAGLE) += board-beagle.o
 obj-$(CONFIG_MACH_OMAP3EVM) += board-omap3evm.o
-obj-$(CONFIG_MACH_OMAP_GPMC_GENERICNAND) += devices-gpmc-nand.o
+obj-y += devices-gpmc-nand.o
 
diff --git a/board/omap/board-beagle.c b/board/omap/board-beagle.c
index 866d8325e5..78c0ef9728 100644
--- a/board/omap/board-beagle.c
+++ b/board/omap/board-beagle.c
@@ -77,51 +77,51 @@
  */
 static void sdrc_init(void)
 {
-       /* SDRAM software reset */
-       /* No idle ack and RESET enable */
-       writel(0x1A, SDRC_REG(SYSCONFIG));
-       sdelay(100);
-       /* No idle ack and RESET disable */
-       writel(0x18, SDRC_REG(SYSCONFIG));
-
-       /* SDRC Sharing register */
-       /* 32-bit SDRAM on data lane [31:0] - CS0 */
-       /* pin tri-stated = 1 */
-       writel(0x00000100, SDRC_REG(SHARING));
-
-       /* ----- SDRC Registers Configuration --------- */
-       /* SDRC_MCFG0 register */
-       writel(0x02584099, SDRC_REG(MCFG_0));
-
-       /* SDRC_RFR_CTRL0 register */
-       writel(0x54601, SDRC_REG(RFR_CTRL_0));
-
-       /* SDRC_ACTIM_CTRLA0 register */
-       writel(0xA29DB4C6, SDRC_REG(ACTIM_CTRLA_0));
-
-       /* SDRC_ACTIM_CTRLB0 register */
-       writel(0x12214, SDRC_REG(ACTIM_CTRLB_0));
-
-       /* Disble Power Down of CKE due to 1 CKE on combo part */
-       writel(0x00000081, SDRC_REG(POWER));
-
-       /* SDRC_MANUAL command register */
-       /* NOP command */
-       writel(0x00000000, SDRC_REG(MANUAL_0));
-       /* Precharge command */
-       writel(0x00000001, SDRC_REG(MANUAL_0));
-       /* Auto-refresh command */
-       writel(0x00000002, SDRC_REG(MANUAL_0));
-       /* Auto-refresh command */
-       writel(0x00000002, SDRC_REG(MANUAL_0));
-
-       /* SDRC MR0 register Burst length=4 */
-       writel(0x00000032, SDRC_REG(MR_0));
-
-       /* SDRC DLLA control register */
-       writel(0x0000000A, SDRC_REG(DLLA_CTRL));
-
-       return;
+	/* SDRAM software reset */
+	/* No idle ack and RESET enable */
+	writel(0x1A, SDRC_REG(SYSCONFIG));
+	sdelay(100);
+	/* No idle ack and RESET disable */
+	writel(0x18, SDRC_REG(SYSCONFIG));
+
+	/* SDRC Sharing register */
+	/* 32-bit SDRAM on data lane [31:0] - CS0 */
+	/* pin tri-stated = 1 */
+	writel(0x00000100, SDRC_REG(SHARING));
+
+	/* ----- SDRC Registers Configuration --------- */
+	/* SDRC_MCFG0 register */
+	writel(0x02584099, SDRC_REG(MCFG_0));
+
+	/* SDRC_RFR_CTRL0 register */
+	writel(0x54601, SDRC_REG(RFR_CTRL_0));
+
+	/* SDRC_ACTIM_CTRLA0 register */
+	writel(0xA29DB4C6, SDRC_REG(ACTIM_CTRLA_0));
+
+	/* SDRC_ACTIM_CTRLB0 register */
+	writel(0x12214, SDRC_REG(ACTIM_CTRLB_0));
+
+	/* Disble Power Down of CKE due to 1 CKE on combo part */
+	writel(0x00000081, SDRC_REG(POWER));
+
+	/* SDRC_MANUAL command register */
+	/* NOP command */
+	writel(0x00000000, SDRC_REG(MANUAL_0));
+	/* Precharge command */
+	writel(0x00000001, SDRC_REG(MANUAL_0));
+	/* Auto-refresh command */
+	writel(0x00000002, SDRC_REG(MANUAL_0));
+	/* Auto-refresh command */
+	writel(0x00000002, SDRC_REG(MANUAL_0));
+
+	/* SDRC MR0 register Burst length=4 */
+	writel(0x00000032, SDRC_REG(MR_0));
+
+	/* SDRC DLLA control register */
+	writel(0x0000000A, SDRC_REG(DLLA_CTRL));
+
+	return;
 }
 
 /**
@@ -135,60 +135,59 @@ static void sdrc_init(void)
  */
 static void mux_config(void)
 {
+	/* SDRC_D0 - SDRC_D31 default mux mode is mode0 */
+
+	/* GPMC */
+	MUX_VAL(CP(GPMC_A1), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A2), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A3), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A4), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A5), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A6), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A7), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A8), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A9), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_A10), (IDIS | PTD | DIS | M0));
+
+	/* D0-D7 default mux mode is mode0 */
+	MUX_VAL(CP(GPMC_D8), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_D9), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_D10), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_D11), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_D12), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_D13), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_D14), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_D15), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_CLK), (IDIS | PTD | DIS | M0));
+	/* GPMC_NADV_ALE default mux mode is mode0 */
+	/* GPMC_NOE default mux mode is mode0 */
+	/* GPMC_NWE default mux mode is mode0 */
+	/* GPMC_NBE0_CLE default mux mode is mode0 */
+	MUX_VAL(CP(GPMC_NBE0_CLE), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_NBE1), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(GPMC_NWP), (IEN | PTD | DIS | M0));
+	/* GPMC_WAIT0 default mux mode is mode0 */
+	MUX_VAL(CP(GPMC_WAIT1), (IEN | PTU | EN | M0));
 
-       /* SDRC_D0 - SDRC_D31 default mux mode is mode0 */
-
-       /* GPMC */
-       MUX_VAL(CP(GPMC_A1), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A2), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A3), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A4), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A5), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A6), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A7), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A8), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A9), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_A10), (IDIS | PTD | DIS | M0));
-
-       /* D0-D7 default mux mode is mode0 */
-       MUX_VAL(CP(GPMC_D8), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_D9), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_D10), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_D11), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_D12), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_D13), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_D14), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_D15), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_CLK), (IDIS | PTD | DIS | M0));
-       /* GPMC_NADV_ALE default mux mode is mode0 */
-       /* GPMC_NOE default mux mode is mode0 */
-       /* GPMC_NWE default mux mode is mode0 */
-       /* GPMC_NBE0_CLE default mux mode is mode0 */
-       MUX_VAL(CP(GPMC_NBE0_CLE), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_NBE1), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(GPMC_NWP), (IEN | PTD | DIS | M0));
-       /* GPMC_WAIT0 default mux mode is mode0 */
-       MUX_VAL(CP(GPMC_WAIT1), (IEN | PTU | EN | M0));
-
-       /* SERIAL INTERFACE */
-       MUX_VAL(CP(UART3_CTS_RCTX), (IEN | PTD | EN | M0));
-       MUX_VAL(CP(UART3_RTS_SD), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(UART3_RX_IRRX), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(UART3_TX_IRTX), (IDIS | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_CLK), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_STP), (IDIS | PTU | EN | M0));
-       MUX_VAL(CP(HSUSB0_DIR), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_NXT), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_DATA0), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_DATA1), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_DATA2), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_DATA3), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_DATA4), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_DATA5), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_DATA6), (IEN | PTD | DIS | M0));
-       MUX_VAL(CP(HSUSB0_DATA7), (IEN | PTD | DIS | M0));
-       /* I2C1_SCL default mux mode is mode0 */
-       /* I2C1_SDA default mux mode is mode0 */
+	/* SERIAL INTERFACE */
+	MUX_VAL(CP(UART3_CTS_RCTX), (IEN | PTD | EN | M0));
+	MUX_VAL(CP(UART3_RTS_SD), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(UART3_RX_IRRX), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(UART3_TX_IRTX), (IDIS | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_CLK), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_STP), (IDIS | PTU | EN | M0));
+	MUX_VAL(CP(HSUSB0_DIR), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_NXT), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_DATA0), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_DATA1), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_DATA2), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_DATA3), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_DATA4), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_DATA5), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_DATA6), (IEN | PTD | DIS | M0));
+	MUX_VAL(CP(HSUSB0_DATA7), (IEN | PTD | DIS | M0));
+	/* I2C1_SCL default mux mode is mode0 */
+	/* I2C1_SDA default mux mode is mode0 */
 }
 
 /**
@@ -202,11 +201,12 @@ static void mux_config(void)
  */
 void board_init(void)
 {
-       int in_sdram = running_in_sdram();
-       mux_config();
-       /* Dont reconfigure SDRAM while running in SDRAM! */
-       if (!in_sdram)
-               sdrc_init();
+	int in_sdram = running_in_sdram();
+
+	mux_config();
+	/* Dont reconfigure SDRAM while running in SDRAM! */
+	if (!in_sdram)
+		sdrc_init();
 }
 
 /******************** Board Run Time *******************/
@@ -214,17 +214,17 @@ void board_init(void)
 #ifdef CONFIG_DRIVER_SERIAL_NS16550
 
 static struct NS16550_plat serial_plat = {
-       .clock = 48000000,      /* 48MHz (APLL96/2) */
-       .f_caps = CONSOLE_STDIN | CONSOLE_STDOUT | CONSOLE_STDERR,
-       .reg_read = omap_uart_read,
-       .reg_write = omap_uart_write,
+	.clock = 48000000,      /* 48MHz (APLL96/2) */
+	.f_caps = CONSOLE_STDIN | CONSOLE_STDOUT | CONSOLE_STDERR,
+	.reg_read = omap_uart_read,
+	.reg_write = omap_uart_write,
 };
 
 static struct device_d beagle_serial_device = {
-       .name = "serial_ns16550",
-       .map_base = OMAP_UART3_BASE,
-       .size = 1024,
-       .platform_data = (void *)&serial_plat,
+	.name = "serial_ns16550",
+	.map_base = OMAP_UART3_BASE,
+	.size = 1024,
+	.platform_data = (void *)&serial_plat,
 };
 
 /**
@@ -235,8 +235,8 @@ static struct device_d beagle_serial_device = {
  */
 static int beagle_console_init(void)
 {
-       /* Register the serial port */
-       return register_device(&beagle_serial_device);
+	/* Register the serial port */
+	return register_device(&beagle_serial_device);
 }
 console_initcall(beagle_console_init);
 #endif /* CONFIG_DRIVER_SERIAL_NS16550 */
@@ -255,16 +255,20 @@ static struct device_d sdram_dev = {
 
 static int beagle_devices_init(void)
 {
-       int ret;
-       ret = register_device(&sdram_dev);
-       if (ret)
-               goto failed;
+	int ret;
+
+	ret = register_device(&sdram_dev);
+	if (ret)
+		goto failed;
+
 #ifdef CONFIG_GPMC
 	/* WP is made high and WAIT1 active Low */
 	gpmc_generic_init(0x10);
 #endif
-       armlinux_add_dram(&sdram_dev);
+	gpmc_generic_nand_devices_init(0, 16, 1);
+
+	armlinux_add_dram(&sdram_dev);
 failed:
-       return ret;
+	return ret;
 }
 device_initcall(beagle_devices_init);
diff --git a/board/omap/config.h b/board/omap/config.h
index 28b62730e4..707b3c4343 100644
--- a/board/omap/config.h
+++ b/board/omap/config.h
@@ -30,9 +30,4 @@
 #ifndef __MACH_OMAP_CONFIG_H
 #define __MACH_OMAP_CONFIG_H
 
-/** define CFG_MALLOC_LEN from Kconfig define */
-#define CFG_MALLOC_LEN     CONFIG_OMAP_MALLOC_LEN
-/** define CONFIG_STACKSIZE from Kconfig define */
-#define CONFIG_STACKSIZE   CONFIG_OMAP_CONFIG_STACKSIZE
-
 #endif /* __MACH_OMAP_CONFIG_H */
diff --git a/board/omap/devices-gpmc-nand.c b/board/omap/devices-gpmc-nand.c
index bbcceafe88..e8b34caf4d 100644
--- a/board/omap/devices-gpmc-nand.c
+++ b/board/omap/devices-gpmc-nand.c
@@ -37,47 +37,14 @@
 #include <mach/gpmc.h>
 #include <mach/gpmc_nand.h>
 
-#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND
-
 #define GPMC_CONF1_VALx8	0x00000800
 #define GPMC_CONF1_VALx16	0x00001800
 /* Set up the generic params */
-#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND_LP_X8
-#define GPMC_NAND_ECC_LAYOUT	GPMC_NAND_ECC_LP_x8_LAYOUT
-#define GPMC_CONF1_VAL		GPMC_CONF1_VALx8
-#define GPMC_NAND_DEV_WIDTH	8
-#endif
-
-#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND_LP_X16
-#define GPMC_NAND_ECC_LAYOUT	GPMC_NAND_ECC_LP_x16_LAYOUT
-#define GPMC_CONF1_VAL		GPMC_CONF1_VALx16
-#define GPMC_NAND_DEV_WIDTH	16
-#endif
-
-#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND_SP_X8
-#define GPMC_NAND_ECC_LAYOUT	GPMC_NAND_ECC_SP_x8_LAYOUT
-#define GPMC_CONF1_VAL		GPMC_CONF1_VALx8
-#define GPMC_NAND_DEV_WIDTH	8
-#endif
-
-#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND_SP_X16
-#define GPMC_NAND_ECC_LAYOUT	GPMC_NAND_ECC_SP_x16_LAYOUT
-#define GPMC_CONF1_VAL		GPMC_CONF1_VALx16
-#define GPMC_NAND_DEV_WIDTH	16
-#endif
-
-#ifdef CONFIG_NAND_OMAP_GPMC_HWECC
-/**
- * The following is the organization of ECC as expected by BootROM.
- * Based on the type of device, this can vary. select the config accordingly
- */
-static struct nand_ecclayout boot_rom_ecc = GPMC_NAND_ECC_LAYOUT;
-#endif
 
 /** GPMC timing for our nand device */
 static struct gpmc_config nand_cfg = {
 	.cfg = {
-		GPMC_CONF1_VAL,	/*CONF1 */
+		0,		/*CONF1 */
 		0x00141400,	/*CONF2 */
 		0x00141400,	/*CONF3 */
 		0x0F010F01,	/*CONF4 */
@@ -97,16 +64,9 @@ static struct gpmc_config nand_cfg = {
 
 /** NAND platform specific settings settings */
 static struct gpmc_nand_platform_data nand_plat = {
-	.cs = CONFIG_MACH_OMAP_CS,
-	.device_width = GPMC_NAND_DEV_WIDTH,
+	.cs = 0,
 	.max_timeout = MSECOND,
 	.wait_mon_pin = 0,
-#ifdef CONFIG_NAND_OMAP_GPMC_HWECC
-	.plat_options = NAND_HWECC_ENABLE,
-	.oob = &boot_rom_ecc,
-#else
-	.plat_options = NAND_HWECC_DISABLE,
-#endif
 	.priv = (void *)&nand_cfg,
 };
 
@@ -123,16 +83,19 @@ static struct device_d gpmc_generic_nand_nand_device = {
  *
  * @return success/fail based on device funtion
  */
-static int gpmc_generic_nand_devices_init(void)
+int gpmc_generic_nand_devices_init(int cs, int width, int hwecc)
 {
+	nand_plat.cs = cs;
+
+	if (width == 16)
+		nand_cfg.cfg[0] = GPMC_CONF1_VALx16;
+	else
+		nand_cfg.cfg[0] = GPMC_CONF1_VALx8;
+
+	nand_plat.device_width = width;
+	nand_plat.plat_options = hwecc ? NAND_HWECC_ENABLE : 0;
+
 	/* Configure GPMC CS before register */
 	gpmc_cs_config(nand_plat.cs, &nand_cfg);
 	return register_device(&gpmc_generic_nand_nand_device);
 }
-
-device_initcall(gpmc_generic_nand_devices_init);
-
-#endif				/* CONFIG_MACH_OMAP_GPMC_GENERICNAND */
-
-/* All specific optimized nand configurations for GPMC NAND comes here */
-