Merge tag 'nand/for-4.15' of git://git.infradead.org/l2-mtd

From Boris:
"
Core changes:
* Add a flag to mark NANDs that require 3 address cycles to encode a
  page address
* Set a default ECC/free layout when NAND_ECC_NONE is requested
* Fix a bug in panic_nand_write()

Driver changes:
* Another batch of cleanups for the denali driver
* Fix PM support in the atmel driver
* Remove support for platform data in the omap driver
* Fix subpage write in the omap driver
* Fix irq handling in the mtk driver
* Change link order of mtk_ecc and mtk_nand drivers to speed up boot
  time
* Change log level of ECC error messages in the mxc driver
* Patch the pxa3xx driver to support Armada 8k platforms
* Add BAM DMA support to the qcom driver
* Convert gpio-nand to the GPIO desc API
* Fix ECC handling in the mt29f driver
"

Documentation/devicetree/bindings/mtd/denali-nand.txt

@@ -29,7 +29,7 @@ nand: nand@ff900000 {
 	#address-cells = <1>;
 	#size-cells = <1>;
 	compatible = "altr,socfpga-denali-nand";
-	reg = <0xff900000 0x100000>, <0xffb80000 0x10000>;
+	reg = <0xff900000 0x20>, <0xffb80000 0x1000>;
 	reg-names = "nand_data", "denali_reg";
 	interrupts = <0 144 4>;
 };

Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt

@@ -5,9 +5,13 @@ Required properties:
  - compatible:		Should be set to one of the following:
 			marvell,pxa3xx-nand
 			marvell,armada370-nand
+			marvell,armada-8k-nand
  - reg: 		The register base for the controller
  - interrupts:		The interrupt to map
  - #address-cells:	Set to <1> if the node includes partitions
+ - marvell,system-controller: Set to retrieve the syscon node that handles
+			NAND controller related registers (only required
+			with marvell,armada-8k-nand compatible).
 
 Optional properties:
 

arch/arm/mach-pxa/cm-x255.c

@@ -14,7 +14,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
 #include <linux/mtd/nand-gpio.h>
-
+#include <linux/gpio/machine.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/pxa2xx_spi.h>
 
@@ -176,6 +176,17 @@ static inline void cmx255_init_nor(void) {}
 #endif
 
 #if defined(CONFIG_MTD_NAND_GPIO) || defined(CONFIG_MTD_NAND_GPIO_MODULE)
+
+static struct gpiod_lookup_table cmx255_nand_gpiod_table = {
+	.dev_id         = "gpio-nand",
+	.table          = {
+		GPIO_LOOKUP("gpio-pxa", GPIO_NAND_CS, "nce", GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("gpio-pxa", GPIO_NAND_CLE, "cle", GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("gpio-pxa", GPIO_NAND_ALE, "ale", GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("gpio-pxa", GPIO_NAND_RB, "rdy", GPIO_ACTIVE_HIGH),
+	},
+};
+
 static struct resource cmx255_nand_resource[] = {
 	[0] = {
 		.start = PXA_CS1_PHYS,
@@ -198,11 +209,6 @@ static struct mtd_partition cmx255_nand_parts[] = {
 };
 
 static struct gpio_nand_platdata cmx255_nand_platdata = {
-	.gpio_nce = GPIO_NAND_CS,
-	.gpio_cle = GPIO_NAND_CLE,
-	.gpio_ale = GPIO_NAND_ALE,
-	.gpio_rdy = GPIO_NAND_RB,
-	.gpio_nwp = -1,
 	.parts = cmx255_nand_parts,
 	.num_parts = ARRAY_SIZE(cmx255_nand_parts),
 	.chip_delay = 25,
@@ -220,6 +226,7 @@ static struct platform_device cmx255_nand = {
 
 static void __init cmx255_init_nand(void)
 {
+	gpiod_add_lookup_table(&cmx255_nand_gpiod_table);
 	platform_device_register(&cmx255_nand);
 }
 #else

drivers/mtd/nand/Kconfig

@@ -317,8 +317,11 @@ config MTD_NAND_PXA3xx
 	tristate "NAND support on PXA3xx and Armada 370/XP"
 	depends on PXA3xx || ARCH_MMP || PLAT_ORION || ARCH_MVEBU
 	help
+
 	  This enables the driver for the NAND flash device found on
-	  PXA3xx processors (NFCv1) and also on Armada 370/XP (NFCv2).
+	  PXA3xx processors (NFCv1) and also on 32-bit Armada
+	  platforms (XP, 370, 375, 38x, 39x) and 64-bit Armada
+	  platforms (7K, 8K) (NFCv2).
 
 config MTD_NAND_SLC_LPC32XX
 	tristate "NXP LPC32xx SLC Controller"

drivers/mtd/nand/Makefile

@@ -58,7 +58,7 @@ obj-$(CONFIG_MTD_NAND_SUNXI)		+= sunxi_nand.o
 obj-$(CONFIG_MTD_NAND_HISI504)	        += hisi504_nand.o
 obj-$(CONFIG_MTD_NAND_BRCMNAND)		+= brcmnand/
 obj-$(CONFIG_MTD_NAND_QCOM)		+= qcom_nandc.o
-obj-$(CONFIG_MTD_NAND_MTK)		+= mtk_nand.o mtk_ecc.o
+obj-$(CONFIG_MTD_NAND_MTK)		+= mtk_ecc.o mtk_nand.o
 
 nand-objs := nand_base.o nand_bbt.o nand_timings.o nand_ids.o
 nand-objs += nand_amd.o

drivers/mtd/nand/atmel/nand-controller.c

@@ -718,8 +718,7 @@ static void atmel_nfc_set_op_addr(struct nand_chip *chip, int page, int column)
 		nc->op.addrs[nc->op.naddrs++] = page;
 		nc->op.addrs[nc->op.naddrs++] = page >> 8;
 
-		if ((mtd->writesize > 512 && chip->chipsize > SZ_128M) ||
-		    (mtd->writesize <= 512 && chip->chipsize > SZ_32M))
+		if (chip->options & NAND_ROW_ADDR_3)
 			nc->op.addrs[nc->op.naddrs++] = page >> 16;
 	}
 }
@@ -2530,6 +2529,9 @@ static __maybe_unused int atmel_nand_controller_resume(struct device *dev)
 	struct atmel_nand_controller *nc = dev_get_drvdata(dev);
 	struct atmel_nand *nand;
 
+	if (nc->pmecc)
+		atmel_pmecc_reset(nc->pmecc);
+
 	list_for_each_entry(nand, &nc->chips, node) {
 		int i;
 
@@ -2547,6 +2549,7 @@ static struct platform_driver atmel_nand_controller_driver = {
 	.driver = {
 		.name = "atmel-nand-controller",
 		.of_match_table = of_match_ptr(atmel_nand_controller_of_ids),
+		.pm = &atmel_nand_controller_pm_ops,
 	},
 	.probe = atmel_nand_controller_probe,
 	.remove = atmel_nand_controller_remove,

drivers/mtd/nand/atmel/pmecc.c

@@ -765,6 +765,13 @@ void atmel_pmecc_get_generated_eccbytes(struct atmel_pmecc_user *user,
 }
 EXPORT_SYMBOL_GPL(atmel_pmecc_get_generated_eccbytes);
 
+void atmel_pmecc_reset(struct atmel_pmecc *pmecc)
+{
+	writel(PMECC_CTRL_RST, pmecc->regs.base + ATMEL_PMECC_CTRL);
+	writel(PMECC_CTRL_DISABLE, pmecc->regs.base + ATMEL_PMECC_CTRL);
+}
+EXPORT_SYMBOL_GPL(atmel_pmecc_reset);
+
 int atmel_pmecc_enable(struct atmel_pmecc_user *user, int op)
 {
 	struct atmel_pmecc *pmecc = user->pmecc;
@@ -797,10 +804,7 @@ EXPORT_SYMBOL_GPL(atmel_pmecc_enable);
 
 void atmel_pmecc_disable(struct atmel_pmecc_user *user)
 {
-	struct atmel_pmecc *pmecc = user->pmecc;
-
-	writel(PMECC_CTRL_RST, pmecc->regs.base + ATMEL_PMECC_CTRL);
-	writel(PMECC_CTRL_DISABLE, pmecc->regs.base + ATMEL_PMECC_CTRL);
+	atmel_pmecc_reset(user->pmecc);
 	mutex_unlock(&user->pmecc->lock);
 }
 EXPORT_SYMBOL_GPL(atmel_pmecc_disable);
@@ -855,10 +859,7 @@ static struct atmel_pmecc *atmel_pmecc_create(struct platform_device *pdev,
 
 	/* Disable all interrupts before registering the PMECC handler. */
 	writel(0xffffffff, pmecc->regs.base + ATMEL_PMECC_IDR);
-
-	/* Reset the ECC engine */
-	writel(PMECC_CTRL_RST, pmecc->regs.base + ATMEL_PMECC_CTRL);
-	writel(PMECC_CTRL_DISABLE, pmecc->regs.base + ATMEL_PMECC_CTRL);
+	atmel_pmecc_reset(pmecc);
 
 	return pmecc;
 }

drivers/mtd/nand/atmel/pmecc.h

@@ -61,6 +61,7 @@ atmel_pmecc_create_user(struct atmel_pmecc *pmecc,
 			struct atmel_pmecc_user_req *req);
 void atmel_pmecc_destroy_user(struct atmel_pmecc_user *user);
 
+void atmel_pmecc_reset(struct atmel_pmecc *pmecc);
 int atmel_pmecc_enable(struct atmel_pmecc_user *user, int op);
 void atmel_pmecc_disable(struct atmel_pmecc_user *user);
 int atmel_pmecc_wait_rdy(struct atmel_pmecc_user *user);

drivers/mtd/nand/au1550nd.c

@@ -331,8 +331,7 @@ static void au1550_command(struct mtd_info *mtd, unsigned command, int column, i
 
 			ctx->write_byte(mtd, (u8)(page_addr >> 8));
 
-			/* One more address cycle for devices > 32MiB */
-			if (this->chipsize > (32 << 20))
+			if (this->options & NAND_ROW_ADDR_3)
 				ctx->write_byte(mtd,
 						((page_addr >> 16) & 0x0f));
 		}

drivers/mtd/nand/denali.h

@@ -10,18 +10,16 @@
  * 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.
- *
  */
 
 #ifndef __DENALI_H__
 #define __DENALI_H__
 
 #include <linux/bitops.h>
+#include <linux/completion.h>
 #include <linux/mtd/rawnand.h>
+#include <linux/spinlock_types.h>
+#include <linux/types.h>
 
 #define DEVICE_RESET				0x0
 #define     DEVICE_RESET__BANK(bank)			BIT(bank)
@@ -111,9 +109,6 @@
 #define ECC_CORRECTION				0x1b0
 #define     ECC_CORRECTION__VALUE			GENMASK(4, 0)
 #define     ECC_CORRECTION__ERASE_THRESHOLD		GENMASK(31, 16)
-#define     MAKE_ECC_CORRECTION(val, thresh)		\
-			(((val) & (ECC_CORRECTION__VALUE)) | \
-			(((thresh) << 16) & (ECC_CORRECTION__ERASE_THRESHOLD)))
 
 #define READ_MODE				0x1c0
 #define     READ_MODE__VALUE				GENMASK(3, 0)
@@ -255,13 +250,13 @@
 
 #define ECC_ERROR_ADDRESS			0x630
 #define     ECC_ERROR_ADDRESS__OFFSET			GENMASK(11, 0)
-#define     ECC_ERROR_ADDRESS__SECTOR_NR		GENMASK(15, 12)
+#define     ECC_ERROR_ADDRESS__SECTOR			GENMASK(15, 12)
 
 #define ERR_CORRECTION_INFO			0x640
-#define     ERR_CORRECTION_INFO__BYTEMASK		GENMASK(7, 0)
-#define     ERR_CORRECTION_INFO__DEVICE_NR		GENMASK(11, 8)
-#define     ERR_CORRECTION_INFO__ERROR_TYPE		BIT(14)
-#define     ERR_CORRECTION_INFO__LAST_ERR_INFO		BIT(15)
+#define     ERR_CORRECTION_INFO__BYTE			GENMASK(7, 0)
+#define     ERR_CORRECTION_INFO__DEVICE			GENMASK(11, 8)
+#define     ERR_CORRECTION_INFO__UNCOR			BIT(14)
+#define     ERR_CORRECTION_INFO__LAST_ERR		BIT(15)
 
 #define ECC_COR_INFO(bank)			(0x650 + (bank) / 2 * 0x10)
 #define     ECC_COR_INFO__SHIFT(bank)			((bank) % 2 * 8)
@@ -310,23 +305,24 @@ struct denali_nand_info {
 	struct device *dev;
 	void __iomem *reg;		/* Register Interface */
 	void __iomem *host;		/* Host Data/Command Interface */
-
-	/* elements used by ISR */
 	struct completion complete;
-	spinlock_t irq_lock;
-	uint32_t irq_mask;
-	uint32_t irq_status;
+	spinlock_t irq_lock;		/* protect irq_mask and irq_status */
+	u32 irq_mask;			/* interrupts we are waiting for */
+	u32 irq_status;			/* interrupts that have happened */
 	int irq;
-
-	void *buf;
+	void *buf;			/* for syndrome layout conversion */
 	dma_addr_t dma_addr;
-	int dma_avail;
+	int dma_avail;			/* can support DMA? */
 	int devs_per_cs;		/* devices connected in parallel */
-	int oob_skip_bytes;
+	int oob_skip_bytes;		/* number of bytes reserved for BBM */
 	int max_banks;
-	unsigned int revision;
-	unsigned int caps;
+	unsigned int revision;		/* IP revision */
+	unsigned int caps;		/* IP capability (or quirk) */
 	const struct nand_ecc_caps *ecc_caps;
+	u32 (*host_read)(struct denali_nand_info *denali, u32 addr);
+	void (*host_write)(struct denali_nand_info *denali, u32 addr, u32 data);
+	void (*setup_dma)(struct denali_nand_info *denali, dma_addr_t dma_addr,
+			  int page, int write);
 };
 
 #define DENALI_CAP_HW_ECC_FIXUP			BIT(0)

drivers/mtd/nand/denali_dt.c

@@ -12,15 +12,16 @@
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  * more details.
  */
+
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/ioport.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/platform_device.h>
 
 #include "denali.h"
 
@@ -155,7 +156,6 @@ static struct platform_driver denali_dt_driver = {
 		.of_match_table	= denali_nand_dt_ids,
 	},
 };
-
 module_platform_driver(denali_dt_driver);
 
 MODULE_LICENSE("GPL");

drivers/mtd/nand/denali_pci.c

@@ -11,6 +11,9 @@
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  * more details.
  */
+
+#include <linux/errno.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pci.h>
@@ -106,7 +109,6 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	return ret;
 }
 
-/* driver exit point */
 static void denali_pci_remove(struct pci_dev *dev)
 {
 	struct denali_nand_info *denali = pci_get_drvdata(dev);
@@ -122,5 +124,4 @@ static struct pci_driver denali_pci_driver = {
 	.probe = denali_pci_probe,
 	.remove = denali_pci_remove,
 };
-
 module_pci_driver(denali_pci_driver);

drivers/mtd/nand/diskonchip.c

@@ -705,8 +705,7 @@ static void doc2001plus_command(struct mtd_info *mtd, unsigned command, int colu
 		if (page_addr != -1) {
 			WriteDOC((unsigned char)(page_addr & 0xff), docptr, Mplus_FlashAddress);
 			WriteDOC((unsigned char)((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress);
-			/* One more address cycle for higher density devices */
-			if (this->chipsize & 0x0c000000) {
+			if (this->options & NAND_ROW_ADDR_3) {
 				WriteDOC((unsigned char)((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress);
 				printk("high density\n");
 			}

drivers/mtd/nand/gpio.c

@@ -23,7 +23,7 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/io.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/rawnand.h>
@@ -31,12 +31,16 @@
 #include <linux/mtd/nand-gpio.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
-#include <linux/of_gpio.h>
 
 struct gpiomtd {
 	void __iomem		*io_sync;
 	struct nand_chip	nand_chip;
 	struct gpio_nand_platdata plat;
+	struct gpio_desc *nce; /* Optional chip enable */
+	struct gpio_desc *cle;
+	struct gpio_desc *ale;
+	struct gpio_desc *rdy;
+	struct gpio_desc *nwp; /* Optional write protection */
 };
 
 static inline struct gpiomtd *gpio_nand_getpriv(struct mtd_info *mtd)
@@ -78,11 +82,10 @@ static void gpio_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
 	gpio_nand_dosync(gpiomtd);
 
 	if (ctrl & NAND_CTRL_CHANGE) {
-		if (gpio_is_valid(gpiomtd->plat.gpio_nce))
-			gpio_set_value(gpiomtd->plat.gpio_nce,
-				       !(ctrl & NAND_NCE));
-		gpio_set_value(gpiomtd->plat.gpio_cle, !!(ctrl & NAND_CLE));
-		gpio_set_value(gpiomtd->plat.gpio_ale, !!(ctrl & NAND_ALE));
+		if (gpiomtd->nce)
+			gpiod_set_value(gpiomtd->nce, !(ctrl & NAND_NCE));
+		gpiod_set_value(gpiomtd->cle, !!(ctrl & NAND_CLE));
+		gpiod_set_value(gpiomtd->ale, !!(ctrl & NAND_ALE));
 		gpio_nand_dosync(gpiomtd);
 	}
 	if (cmd == NAND_CMD_NONE)
@@ -96,7 +99,7 @@ static int gpio_nand_devready(struct mtd_info *mtd)
 {
 	struct gpiomtd *gpiomtd = gpio_nand_getpriv(mtd);
 
-	return gpio_get_value(gpiomtd->plat.gpio_rdy);
+	return gpiod_get_value(gpiomtd->rdy);
 }
 
 #ifdef CONFIG_OF
@@ -123,12 +126,6 @@ static int gpio_nand_get_config_of(const struct device *dev,
 		}
 	}
 
-	plat->gpio_rdy = of_get_gpio(dev->of_node, 0);
-	plat->gpio_nce = of_get_gpio(dev->of_node, 1);
-	plat->gpio_ale = of_get_gpio(dev->of_node, 2);
-	plat->gpio_cle = of_get_gpio(dev->of_node, 3);
-	plat->gpio_nwp = of_get_gpio(dev->of_node, 4);
-
 	if (!of_property_read_u32(dev->of_node, "chip-delay", &val))
 		plat->chip_delay = val;
 
@@ -201,10 +198,11 @@ static int gpio_nand_remove(struct platform_device *pdev)
 
 	nand_release(nand_to_mtd(&gpiomtd->nand_chip));
 
-	if (gpio_is_valid(gpiomtd->plat.gpio_nwp))
-		gpio_set_value(gpiomtd->plat.gpio_nwp, 0);
-	if (gpio_is_valid(gpiomtd->plat.gpio_nce))
-		gpio_set_value(gpiomtd->plat.gpio_nce, 1);
+	/* Enable write protection and disable the chip */
+	if (gpiomtd->nwp && !IS_ERR(gpiomtd->nwp))
+		gpiod_set_value(gpiomtd->nwp, 0);
+	if (gpiomtd->nce && !IS_ERR(gpiomtd->nce))
+		gpiod_set_value(gpiomtd->nce, 0);
 
 	return 0;
 }
@@ -215,66 +213,66 @@ static int gpio_nand_probe(struct platform_device *pdev)
 	struct nand_chip *chip;
 	struct mtd_info *mtd;
 	struct resource *res;
+	struct device *dev = &pdev->dev;
 	int ret = 0;
 
-	if (!pdev->dev.of_node && !dev_get_platdata(&pdev->dev))
+	if (!dev->of_node && !dev_get_platdata(dev))
 		return -EINVAL;
 
-	gpiomtd = devm_kzalloc(&pdev->dev, sizeof(*gpiomtd), GFP_KERNEL);
+	gpiomtd = devm_kzalloc(dev, sizeof(*gpiomtd), GFP_KERNEL);
 	if (!gpiomtd)
 		return -ENOMEM;
 
 	chip = &gpiomtd->nand_chip;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	chip->IO_ADDR_R = devm_ioremap_resource(&pdev->dev, res);
+	chip->IO_ADDR_R = devm_ioremap_resource(dev, res);
 	if (IS_ERR(chip->IO_ADDR_R))
 		return PTR_ERR(chip->IO_ADDR_R);
 
 	res = gpio_nand_get_io_sync(pdev);
 	if (res) {
-		gpiomtd->io_sync = devm_ioremap_resource(&pdev->dev, res);
+		gpiomtd->io_sync = devm_ioremap_resource(dev, res);
 		if (IS_ERR(gpiomtd->io_sync))
 			return PTR_ERR(gpiomtd->io_sync);
 	}
 
-	ret = gpio_nand_get_config(&pdev->dev, &gpiomtd->plat);
+	ret = gpio_nand_get_config(dev, &gpiomtd->plat);
 	if (ret)
 		return ret;
 
-	if (gpio_is_valid(gpiomtd->plat.gpio_nce)) {
-		ret = devm_gpio_request(&pdev->dev, gpiomtd->plat.gpio_nce,
-					"NAND NCE");
-		if (ret)
-			return ret;
-		gpio_direction_output(gpiomtd->plat.gpio_nce, 1);
-	}
+	/* Just enable the chip */
+	gpiomtd->nce = devm_gpiod_get_optional(dev, "nce", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpiomtd->nce))
+		return PTR_ERR(gpiomtd->nce);
 
-	if (gpio_is_valid(gpiomtd->plat.gpio_nwp)) {
-		ret = devm_gpio_request(&pdev->dev, gpiomtd->plat.gpio_nwp,
-					"NAND NWP");
-		if (ret)
-			return ret;
+	/* We disable write protection once we know probe() will succeed */
+	gpiomtd->nwp = devm_gpiod_get_optional(dev, "nwp", GPIOD_OUT_LOW);
+	if (IS_ERR(gpiomtd->nwp)) {
+		ret = PTR_ERR(gpiomtd->nwp);
+		goto out_ce;
 	}
 
-	ret = devm_gpio_request(&pdev->dev, gpiomtd->plat.gpio_ale, "NAND ALE");
-	if (ret)
-		return ret;
-	gpio_direction_output(gpiomtd->plat.gpio_ale, 0);
+	gpiomtd->nwp = devm_gpiod_get(dev, "ale", GPIOD_OUT_LOW);
+	if (IS_ERR(gpiomtd->nwp)) {
+		ret = PTR_ERR(gpiomtd->nwp);
+		goto out_ce;
+	}
 
-	ret = devm_gpio_request(&pdev->dev, gpiomtd->plat.gpio_cle, "NAND CLE");
-	if (ret)
-		return ret;
-	gpio_direction_output(gpiomtd->plat.gpio_cle, 0);
+	gpiomtd->cle = devm_gpiod_get(dev, "cle", GPIOD_OUT_LOW);
+	if (IS_ERR(gpiomtd->cle)) {
+		ret = PTR_ERR(gpiomtd->cle);
+		goto out_ce;
+	}
 
-	if (gpio_is_valid(gpiomtd->plat.gpio_rdy)) {
-		ret = devm_gpio_request(&pdev->dev, gpiomtd->plat.gpio_rdy,
-					"NAND RDY");
-		if (ret)
-			return ret;
-		gpio_direction_input(gpiomtd->plat.gpio_rdy);
-		chip->dev_ready = gpio_nand_devready;
+	gpiomtd->rdy = devm_gpiod_get_optional(dev, "rdy", GPIOD_IN);
+	if (IS_ERR(gpiomtd->rdy)) {
+		ret = PTR_ERR(gpiomtd->rdy);
+		goto out_ce;
 	}
+	/* Using RDY pin */
+	if (gpiomtd->rdy)
+		chip->dev_ready = gpio_nand_devready;
 
 	nand_set_flash_node(chip, pdev->dev.of_node);
 	chip->IO_ADDR_W		= chip->IO_ADDR_R;
@@ -285,12 +283,13 @@ static int gpio_nand_probe(struct platform_device *pdev)
 	chip->cmd_ctrl		= gpio_nand_cmd_ctrl;
 
 	mtd			= nand_to_mtd(chip);
-	mtd->dev.parent		= &pdev->dev;
+	mtd->dev.parent		= dev;
 
 	platform_set_drvdata(pdev, gpiomtd);
 
-	if (gpio_is_valid(gpiomtd->plat.gpio_nwp))
-		gpio_direction_output(gpiomtd->plat.gpio_nwp, 1);
+	/* Disable write protection, if wired up */
+	if (gpiomtd->nwp && !IS_ERR(gpiomtd->nwp))
+		gpiod_direction_output(gpiomtd->nwp, 1);
 
 	ret = nand_scan(mtd, 1);
 	if (ret)
@@ -305,8 +304,11 @@ static int gpio_nand_probe(struct platform_device *pdev)
 		return 0;
 
 err_wp:
-	if (gpio_is_valid(gpiomtd->plat.gpio_nwp))
-		gpio_set_value(gpiomtd->plat.gpio_nwp, 0);
+	if (gpiomtd->nwp && !IS_ERR(gpiomtd->nwp))
+		gpiod_set_value(gpiomtd->nwp, 0);
+out_ce:
+	if (gpiomtd->nce && !IS_ERR(gpiomtd->nce))
+		gpiod_set_value(gpiomtd->nce, 0);
 
 	return ret;
 }

drivers/mtd/nand/hisi504_nand.c

@@ -432,8 +432,7 @@ static void set_addr(struct mtd_info *mtd, int column, int page_addr)
 		host->addr_value[0] |= (page_addr & 0xffff)
 			<< (host->addr_cycle * 8);
 		host->addr_cycle    += 2;
-		/* One more address cycle for devices > 128MiB */
-		if (chip->chipsize > (128 << 20)) {
+		if (chip->options & NAND_ROW_ADDR_3) {
 			host->addr_cycle += 1;
 			if (host->command == NAND_CMD_ERASE1)
 				host->addr_value[0] |= ((page_addr >> 16) & 0xff) << 16;

drivers/mtd/nand/mtk_ecc.c

@@ -115,6 +115,11 @@ static irqreturn_t mtk_ecc_irq(int irq, void *id)
 		op = ECC_DECODE;
 		dec = readw(ecc->regs + ECC_DECDONE);
 		if (dec & ecc->sectors) {
+			/*
+			 * Clear decode IRQ status once again to ensure that
+			 * there will be no extra IRQ.
+			 */
+			readw(ecc->regs + ECC_DECIRQ_STA);
 			ecc->sectors = 0;
 			complete(&ecc->done);
 		} else {
@@ -130,8 +135,6 @@ static irqreturn_t mtk_ecc_irq(int irq, void *id)
 		}
 	}
 
-	writel(0, ecc->regs + ECC_IRQ_REG(op));
-
 	return IRQ_HANDLED;
 }
 
@@ -307,6 +310,12 @@ void mtk_ecc_disable(struct mtk_ecc *ecc)
 
 	/* disable it */
 	mtk_ecc_wait_idle(ecc, op);
+	if (op == ECC_DECODE)
+		/*
+		 * Clear decode IRQ status in case there is a timeout to wait
+		 * decode IRQ.
+		 */
+		readw(ecc->regs + ECC_DECIRQ_STA);
 	writew(0, ecc->regs + ECC_IRQ_REG(op));
 	writew(ECC_OP_DISABLE, ecc->regs + ECC_CTL_REG(op));
 

drivers/mtd/nand/mxc_nand.c

@@ -415,7 +415,7 @@ static void send_cmd_v3(struct mxc_nand_host *host, uint16_t cmd, int useirq)
  * waits for completion. */
 static void send_cmd_v1_v2(struct mxc_nand_host *host, uint16_t cmd, int useirq)
 {
-	pr_debug("send_cmd(host, 0x%x, %d)\n", cmd, useirq);
+	dev_dbg(host->dev, "send_cmd(host, 0x%x, %d)\n", cmd, useirq);
 
 	writew(cmd, NFC_V1_V2_FLASH_CMD);
 	writew(NFC_CMD, NFC_V1_V2_CONFIG2);
@@ -431,7 +431,7 @@ static void send_cmd_v1_v2(struct mxc_nand_host *host, uint16_t cmd, int useirq)
 			udelay(1);
 		}
 		if (max_retries < 0)
-			pr_debug("%s: RESET failed\n", __func__);
+			dev_dbg(host->dev, "%s: RESET failed\n", __func__);
 	} else {
 		/* Wait for operation to complete */
 		wait_op_done(host, useirq);
@@ -454,7 +454,7 @@ static void send_addr_v3(struct mxc_nand_host *host, uint16_t addr, int islast)
  * a NAND command. */
 static void send_addr_v1_v2(struct mxc_nand_host *host, uint16_t addr, int islast)
 {
-	pr_debug("send_addr(host, 0x%x %d)\n", addr, islast);
+	dev_dbg(host->dev, "send_addr(host, 0x%x %d)\n", addr, islast);
 
 	writew(addr, NFC_V1_V2_FLASH_ADDR);
 	writew(NFC_ADDR, NFC_V1_V2_CONFIG2);
@@ -607,7 +607,7 @@ static int mxc_nand_correct_data_v1(struct mtd_info *mtd, u_char *dat,
 	uint16_t ecc_status = get_ecc_status_v1(host);
 
 	if (((ecc_status & 0x3) == 2) || ((ecc_status >> 2) == 2)) {
-		pr_debug("MXC_NAND: HWECC uncorrectable 2-bit ECC error\n");
+		dev_dbg(host->dev, "HWECC uncorrectable 2-bit ECC error\n");
 		return -EBADMSG;
 	}
 
@@ -634,7 +634,7 @@ static int mxc_nand_correct_data_v2_v3(struct mtd_info *mtd, u_char *dat,
 	do {
 		err = ecc_stat & ecc_bit_mask;
 		if (err > err_limit) {
-			printk(KERN_WARNING "UnCorrectable RS-ECC Error\n");
+			dev_dbg(host->dev, "UnCorrectable RS-ECC Error\n");
 			return -EBADMSG;
 		} else {
 			ret += err;
@@ -642,7 +642,7 @@ static int mxc_nand_correct_data_v2_v3(struct mtd_info *mtd, u_char *dat,
 		ecc_stat >>= 4;
 	} while (--no_subpages);
 
-	pr_debug("%d Symbol Correctable RS-ECC Error\n", ret);
+	dev_dbg(host->dev, "%d Symbol Correctable RS-ECC Error\n", ret);
 
 	return ret;
 }
@@ -673,7 +673,7 @@ static u_char mxc_nand_read_byte(struct mtd_info *mtd)
 		host->buf_start++;
 	}
 
-	pr_debug("%s: ret=0x%hhx (start=%u)\n", __func__, ret, host->buf_start);
+	dev_dbg(host->dev, "%s: ret=0x%hhx (start=%u)\n", __func__, ret, host->buf_start);
 	return ret;
 }
 
@@ -859,8 +859,7 @@ static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr)
 				host->devtype_data->send_addr(host,
 						(page_addr >> 8) & 0xff, true);
 		} else {
-			/* One more address cycle for higher density devices */
-			if (mtd->size >= 0x4000000) {
+			if (nand_chip->options & NAND_ROW_ADDR_3) {
 				/* paddr_8 - paddr_15 */
 				host->devtype_data->send_addr(host,
 						(page_addr >> 8) & 0xff,
@@ -1212,7 +1211,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command,
 	struct nand_chip *nand_chip = mtd_to_nand(mtd);
 	struct mxc_nand_host *host = nand_get_controller_data(nand_chip);
 
-	pr_debug("mxc_nand_command (cmd = 0x%x, col = 0x%x, page = 0x%x)\n",
+	dev_dbg(host->dev, "mxc_nand_command (cmd = 0x%x, col = 0x%x, page = 0x%x)\n",
 	      command, column, page_addr);
 
 	/* Reset command state information */

drivers/mtd/nand/nand_base.c

@@ -115,7 +115,7 @@ static int nand_ooblayout_ecc_lp(struct mtd_info *mtd, int section,
 	struct nand_chip *chip = mtd_to_nand(mtd);
 	struct nand_ecc_ctrl *ecc = &chip->ecc;
 
-	if (section)
+	if (section || !ecc->total)
 		return -ERANGE;
 
 	oobregion->length = ecc->total;
@@ -727,8 +727,7 @@ static void nand_command(struct mtd_info *mtd, unsigned int command,
 		chip->cmd_ctrl(mtd, page_addr, ctrl);
 		ctrl &= ~NAND_CTRL_CHANGE;
 		chip->cmd_ctrl(mtd, page_addr >> 8, ctrl);
-		/* One more address cycle for devices > 32MiB */
-		if (chip->chipsize > (32 << 20))
+		if (chip->options & NAND_ROW_ADDR_3)
 			chip->cmd_ctrl(mtd, page_addr >> 16, ctrl);
 	}
 	chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
@@ -854,8 +853,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command,
 			chip->cmd_ctrl(mtd, page_addr, ctrl);
 			chip->cmd_ctrl(mtd, page_addr >> 8,
 				       NAND_NCE | NAND_ALE);
-			/* One more address cycle for devices > 128MiB */
-			if (chip->chipsize > (128 << 20))
+			if (chip->options & NAND_ROW_ADDR_3)
 				chip->cmd_ctrl(mtd, page_addr >> 16,
 					       NAND_NCE | NAND_ALE);
 		}
@@ -1246,6 +1244,7 @@ int nand_reset(struct nand_chip *chip, int chipnr)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(nand_reset);
 
 /**
  * nand_check_erased_buf - check if a buffer contains (almost) only 0xff data
@@ -2799,15 +2798,18 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
 			    size_t *retlen, const uint8_t *buf)
 {
 	struct nand_chip *chip = mtd_to_nand(mtd);
+	int chipnr = (int)(to >> chip->chip_shift);
 	struct mtd_oob_ops ops;
 	int ret;
 
-	/* Wait for the device to get ready */
-	panic_nand_wait(mtd, chip, 400);
-
 	/* Grab the device */
 	panic_nand_get_device(chip, mtd, FL_WRITING);
 
+	chip->select_chip(mtd, chipnr);
+
+	/* Wait for the device to get ready */
+	panic_nand_wait(mtd, chip, 400);
+
 	memset(&ops, 0, sizeof(ops));
 	ops.len = len;
 	ops.datbuf = (uint8_t *)buf;
@@ -3999,6 +4001,9 @@ static int nand_detect(struct nand_chip *chip, struct nand_flash_dev *type)
 		chip->chip_shift += 32 - 1;
 	}
 
+	if (chip->chip_shift - chip->page_shift > 16)
+		chip->options |= NAND_ROW_ADDR_3;
+
 	chip->badblockbits = 8;
 	chip->erase = single_erase;
 
@@ -4700,6 +4705,19 @@ int nand_scan_tail(struct mtd_info *mtd)
 			mtd_set_ooblayout(mtd, &nand_ooblayout_lp_hamming_ops);
 			break;
 		default:
+			/*
+			 * Expose the whole OOB area to users if ECC_NONE
+			 * is passed. We could do that for all kind of
+			 * ->oobsize, but we must keep the old large/small
+			 * page with ECC layout when ->oobsize <= 128 for
+			 * compatibility reasons.
+			 */
+			if (ecc->mode == NAND_ECC_NONE) {
+				mtd_set_ooblayout(mtd,
+						&nand_ooblayout_lp_ops);
+				break;
+			}
+
 			WARN(1, "No oob scheme defined for oobsize %d\n",
 				mtd->oobsize);
 			ret = -EINVAL;

drivers/mtd/nand/nuc900_nand.c

@@ -154,7 +154,7 @@ static void nuc900_nand_command_lp(struct mtd_info *mtd, unsigned int command,
 		if (page_addr != -1) {
 			write_addr_reg(nand, page_addr);
 
-			if (chip->chipsize > (128 << 20)) {
+			if (chip->options & NAND_ROW_ADDR_3) {
 				write_addr_reg(nand, page_addr >> 8);
 				write_addr_reg(nand, page_addr >> 16 | ENDADDR);
 			} else {

drivers/mtd/nand/pxa3xx_nand.c

@@ -30,6 +30,8 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/platform_data/mtd-nand-pxa3xx.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
 
 #define	CHIP_DELAY_TIMEOUT	msecs_to_jiffies(200)
 #define NAND_STOP_DELAY		msecs_to_jiffies(40)
@@ -45,6 +47,10 @@
  */
 #define INIT_BUFFER_SIZE	2048
 
+/* System control register and bit to enable NAND on some SoCs */
+#define GENCONF_SOC_DEVICE_MUX	0x208
+#define GENCONF_SOC_DEVICE_MUX_NFC_EN BIT(0)
+
 /* registers and bit definitions */
 #define NDCR		(0x00) /* Control register */
 #define NDTR0CS0	(0x04) /* Timing Parameter 0 for CS0 */
@@ -174,6 +180,7 @@ enum {
 enum pxa3xx_nand_variant {
 	PXA3XX_NAND_VARIANT_PXA,
 	PXA3XX_NAND_VARIANT_ARMADA370,
+	PXA3XX_NAND_VARIANT_ARMADA_8K,
 };
 
 struct pxa3xx_nand_host {
@@ -425,6 +432,10 @@ static const struct of_device_id pxa3xx_nand_dt_ids[] = {
 		.compatible = "marvell,armada370-nand",
 		.data       = (void *)PXA3XX_NAND_VARIANT_ARMADA370,
 	},
+	{
+		.compatible = "marvell,armada-8k-nand",
+		.data       = (void *)PXA3XX_NAND_VARIANT_ARMADA_8K,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, pxa3xx_nand_dt_ids);
@@ -825,7 +836,8 @@ static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
 		info->retcode = ERR_UNCORERR;
 	if (status & NDSR_CORERR) {
 		info->retcode = ERR_CORERR;
-		if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 &&
+		if ((info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
+		     info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K) &&
 		    info->ecc_bch)
 			info->ecc_err_cnt = NDSR_ERR_CNT(status);
 		else
@@ -888,7 +900,8 @@ static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
 		nand_writel(info, NDCB0, info->ndcb2);
 
 		/* NDCB3 register is available in NFCv2 (Armada 370/XP SoC) */
-		if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370)
+		if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
+		    info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K)
 			nand_writel(info, NDCB0, info->ndcb3);
 	}
 
@@ -1671,7 +1684,8 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
 		chip->options |= NAND_BUSWIDTH_16;
 
 	/* Device detection must be done with ECC disabled */
-	if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370)
+	if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
+	    info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K)
 		nand_writel(info, NDECCCTRL, 0x0);
 
 	if (pdata->flash_bbt)
@@ -1709,7 +1723,8 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
 	 * (aka splitted) command handling,
 	 */
 	if (mtd->writesize > PAGE_CHUNK_SIZE) {
-		if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370) {
+		if (info->variant == PXA3XX_NAND_VARIANT_ARMADA370 ||
+		    info->variant == PXA3XX_NAND_VARIANT_ARMADA_8K) {
 			chip->cmdfunc = nand_cmdfunc_extended;
 		} else {
 			dev_err(&info->pdev->dev,
@@ -1928,6 +1943,24 @@ static int pxa3xx_nand_probe_dt(struct platform_device *pdev)
 	if (!of_id)
 		return 0;
 
+	/*
+	 * Some SoCs like A7k/A8k need to enable manually the NAND
+	 * controller to avoid being bootloader dependent. This is done
+	 * through the use of a single bit in the System Functions registers.
+	 */
+	if (pxa3xx_nand_get_variant(pdev) == PXA3XX_NAND_VARIANT_ARMADA_8K) {
+		struct regmap *sysctrl_base = syscon_regmap_lookup_by_phandle(
+			pdev->dev.of_node, "marvell,system-controller");
+		u32 reg;
+
+		if (IS_ERR(sysctrl_base))
+			return PTR_ERR(sysctrl_base);
+
+		regmap_read(sysctrl_base, GENCONF_SOC_DEVICE_MUX, &reg);
+		reg |= GENCONF_SOC_DEVICE_MUX_NFC_EN;
+		regmap_write(sysctrl_base, GENCONF_SOC_DEVICE_MUX, reg);
+	}
+
 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return -ENOMEM;

drivers/mtd/nand/qcom_nandc.c

@@ -22,6 +22,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/delay.h>
+#include <linux/dma/qcom_bam_dma.h>
 
 /* NANDc reg offsets */
 #define	NAND_FLASH_CMD			0x00
@@ -199,6 +200,15 @@ nandc_set_reg(nandc, NAND_READ_LOCATION_##reg,			\
  */
 #define dev_cmd_reg_addr(nandc, reg) ((nandc)->props->dev_cmd_reg_start + (reg))
 
+/* Returns the NAND register physical address */
+#define nandc_reg_phys(chip, offset) ((chip)->base_phys + (offset))
+
+/* Returns the dma address for reg read buffer */
+#define reg_buf_dma_addr(chip, vaddr) \
+	((chip)->reg_read_dma + \
+	((uint8_t *)(vaddr) - (uint8_t *)(chip)->reg_read_buf))
+
+#define QPIC_PER_CW_CMD_ELEMENTS	32
 #define QPIC_PER_CW_CMD_SGL		32
 #define QPIC_PER_CW_DATA_SGL		8
 
@@ -221,8 +231,13 @@ nandc_set_reg(nandc, NAND_READ_LOCATION_##reg,			\
 /*
  * This data type corresponds to the BAM transaction which will be used for all
  * NAND transfers.
+ * @bam_ce - the array of BAM command elements
  * @cmd_sgl - sgl for NAND BAM command pipe
  * @data_sgl - sgl for NAND BAM consumer/producer pipe
+ * @bam_ce_pos - the index in bam_ce which is available for next sgl
+ * @bam_ce_start - the index in bam_ce which marks the start position ce
+ *		   for current sgl. It will be used for size calculation
+ *		   for current sgl
  * @cmd_sgl_pos - current index in command sgl.
  * @cmd_sgl_start - start index in command sgl.
  * @tx_sgl_pos - current index in data sgl for tx.
@@ -231,8 +246,11 @@ nandc_set_reg(nandc, NAND_READ_LOCATION_##reg,			\
  * @rx_sgl_start - start index in data sgl for rx.
  */
 struct bam_transaction {
+	struct bam_cmd_element *bam_ce;
 	struct scatterlist *cmd_sgl;
 	struct scatterlist *data_sgl;
+	u32 bam_ce_pos;
+	u32 bam_ce_start;
 	u32 cmd_sgl_pos;
 	u32 cmd_sgl_start;
 	u32 tx_sgl_pos;
@@ -307,7 +325,8 @@ struct nandc_regs {
  *				controller
  * @dev:			parent device
  * @base:			MMIO base
- * @base_dma:			physical base address of controller registers
+ * @base_phys:			physical base address of controller registers
+ * @base_dma:			dma base address of controller registers
  * @core_clk:			controller clock
  * @aon_clk:			another controller clock
  *
@@ -340,6 +359,7 @@ struct qcom_nand_controller {
 	struct device *dev;
 
 	void __iomem *base;
+	phys_addr_t base_phys;
 	dma_addr_t base_dma;
 
 	struct clk *core_clk;
@@ -462,7 +482,8 @@ alloc_bam_transaction(struct qcom_nand_controller *nandc)
 
 	bam_txn_size =
 		sizeof(*bam_txn) + num_cw *
-		((sizeof(*bam_txn->cmd_sgl) * QPIC_PER_CW_CMD_SGL) +
+		((sizeof(*bam_txn->bam_ce) * QPIC_PER_CW_CMD_ELEMENTS) +
+		(sizeof(*bam_txn->cmd_sgl) * QPIC_PER_CW_CMD_SGL) +
 		(sizeof(*bam_txn->data_sgl) * QPIC_PER_CW_DATA_SGL));
 
 	bam_txn_buf = devm_kzalloc(nandc->dev, bam_txn_size, GFP_KERNEL);
@@ -472,6 +493,10 @@ alloc_bam_transaction(struct qcom_nand_controller *nandc)
 	bam_txn = bam_txn_buf;
 	bam_txn_buf += sizeof(*bam_txn);
 
+	bam_txn->bam_ce = bam_txn_buf;
+	bam_txn_buf +=
+		sizeof(*bam_txn->bam_ce) * QPIC_PER_CW_CMD_ELEMENTS * num_cw;
+
 	bam_txn->cmd_sgl = bam_txn_buf;
 	bam_txn_buf +=
 		sizeof(*bam_txn->cmd_sgl) * QPIC_PER_CW_CMD_SGL * num_cw;
@@ -489,6 +514,8 @@ static void clear_bam_transaction(struct qcom_nand_controller *nandc)
 	if (!nandc->props->is_bam)
 		return;
 
+	bam_txn->bam_ce_pos = 0;
+	bam_txn->bam_ce_start = 0;
 	bam_txn->cmd_sgl_pos = 0;
 	bam_txn->cmd_sgl_start = 0;
 	bam_txn->tx_sgl_pos = 0;
@@ -733,6 +760,66 @@ static int prepare_bam_async_desc(struct qcom_nand_controller *nandc,
 	return 0;
 }
 
+/*
+ * Prepares the command descriptor for BAM DMA which will be used for NAND
+ * register reads and writes. The command descriptor requires the command
+ * to be formed in command element type so this function uses the command
+ * element from bam transaction ce array and fills the same with required
+ * data. A single SGL can contain multiple command elements so
+ * NAND_BAM_NEXT_SGL will be used for starting the separate SGL
+ * after the current command element.
+ */
+static int prep_bam_dma_desc_cmd(struct qcom_nand_controller *nandc, bool read,
+				 int reg_off, const void *vaddr,
+				 int size, unsigned int flags)
+{
+	int bam_ce_size;
+	int i, ret;
+	struct bam_cmd_element *bam_ce_buffer;
+	struct bam_transaction *bam_txn = nandc->bam_txn;
+
+	bam_ce_buffer = &bam_txn->bam_ce[bam_txn->bam_ce_pos];
+
+	/* fill the command desc */
+	for (i = 0; i < size; i++) {
+		if (read)
+			bam_prep_ce(&bam_ce_buffer[i],
+				    nandc_reg_phys(nandc, reg_off + 4 * i),
+				    BAM_READ_COMMAND,
+				    reg_buf_dma_addr(nandc,
+						     (__le32 *)vaddr + i));
+		else
+			bam_prep_ce_le32(&bam_ce_buffer[i],
+					 nandc_reg_phys(nandc, reg_off + 4 * i),
+					 BAM_WRITE_COMMAND,
+					 *((__le32 *)vaddr + i));
+	}
+
+	bam_txn->bam_ce_pos += size;
+
+	/* use the separate sgl after this command */
+	if (flags & NAND_BAM_NEXT_SGL) {
+		bam_ce_buffer = &bam_txn->bam_ce[bam_txn->bam_ce_start];
+		bam_ce_size = (bam_txn->bam_ce_pos -
+				bam_txn->bam_ce_start) *
+				sizeof(struct bam_cmd_element);
+		sg_set_buf(&bam_txn->cmd_sgl[bam_txn->cmd_sgl_pos],
+			   bam_ce_buffer, bam_ce_size);
+		bam_txn->cmd_sgl_pos++;
+		bam_txn->bam_ce_start = bam_txn->bam_ce_pos;
+
+		if (flags & NAND_BAM_NWD) {
+			ret = prepare_bam_async_desc(nandc, nandc->cmd_chan,
+						     DMA_PREP_FENCE |
+						     DMA_PREP_CMD);
+			if (ret)
+				return ret;
+		}
+	}
+
+	return 0;
+}
+
 /*
  * Prepares the data descriptor for BAM DMA which will be used for NAND
  * data reads and writes.
@@ -851,19 +938,22 @@ static int read_reg_dma(struct qcom_nand_controller *nandc, int first,
 {
 	bool flow_control = false;
 	void *vaddr;
-	int size;
 
-	if (first == NAND_READ_ID || first == NAND_FLASH_STATUS)
-		flow_control = true;
+	vaddr = nandc->reg_read_buf + nandc->reg_read_pos;
+	nandc->reg_read_pos += num_regs;
 
 	if (first == NAND_DEV_CMD_VLD || first == NAND_DEV_CMD1)
 		first = dev_cmd_reg_addr(nandc, first);
 
-	size = num_regs * sizeof(u32);
-	vaddr = nandc->reg_read_buf + nandc->reg_read_pos;
-	nandc->reg_read_pos += num_regs;
+	if (nandc->props->is_bam)
+		return prep_bam_dma_desc_cmd(nandc, true, first, vaddr,
+					     num_regs, flags);
+
+	if (first == NAND_READ_ID || first == NAND_FLASH_STATUS)
+		flow_control = true;
 
-	return prep_adm_dma_desc(nandc, true, first, vaddr, size, flow_control);
+	return prep_adm_dma_desc(nandc, true, first, vaddr,
+				 num_regs * sizeof(u32), flow_control);
 }
 
 /*
@@ -880,13 +970,9 @@ static int write_reg_dma(struct qcom_nand_controller *nandc, int first,
 	bool flow_control = false;
 	struct nandc_regs *regs = nandc->regs;
 	void *vaddr;
-	int size;
 
 	vaddr = offset_to_nandc_reg(regs, first);
 
-	if (first == NAND_FLASH_CMD)
-		flow_control = true;
-
 	if (first == NAND_ERASED_CW_DETECT_CFG) {
 		if (flags & NAND_ERASED_CW_SET)
 			vaddr = &regs->erased_cw_detect_cfg_set;
@@ -903,10 +989,15 @@ static int write_reg_dma(struct qcom_nand_controller *nandc, int first,
 	if (first == NAND_DEV_CMD_VLD_RESTORE || first == NAND_DEV_CMD_VLD)
 		first = dev_cmd_reg_addr(nandc, NAND_DEV_CMD_VLD);
 
-	size = num_regs * sizeof(u32);
+	if (nandc->props->is_bam)
+		return prep_bam_dma_desc_cmd(nandc, false, first, vaddr,
+					     num_regs, flags);
+
+	if (first == NAND_FLASH_CMD)
+		flow_control = true;
 
-	return prep_adm_dma_desc(nandc, false, first, vaddr, size,
-				 flow_control);
+	return prep_adm_dma_desc(nandc, false, first, vaddr,
+				 num_regs * sizeof(u32), flow_control);
 }
 
 /*
@@ -1170,7 +1261,8 @@ static int submit_descs(struct qcom_nand_controller *nandc)
 		}
 
 		if (bam_txn->cmd_sgl_pos > bam_txn->cmd_sgl_start) {
-			r = prepare_bam_async_desc(nandc, nandc->cmd_chan, 0);
+			r = prepare_bam_async_desc(nandc, nandc->cmd_chan,
+						   DMA_PREP_CMD);
 			if (r)
 				return r;
 		}
@@ -2705,6 +2797,7 @@ static int qcom_nandc_probe(struct platform_device *pdev)
 	if (IS_ERR(nandc->base))
 		return PTR_ERR(nandc->base);
 
+	nandc->base_phys = res->start;
 	nandc->base_dma = phys_to_dma(dev, (phys_addr_t)res->start);
 
 	nandc->core_clk = devm_clk_get(dev, "core");

drivers/mtd/nand/sh_flctl.c

@@ -1094,14 +1094,11 @@ MODULE_DEVICE_TABLE(of, of_flctl_match);
 
 static struct sh_flctl_platform_data *flctl_parse_dt(struct device *dev)
 {
-	const struct of_device_id *match;
-	struct flctl_soc_config *config;
+	const struct flctl_soc_config *config;
 	struct sh_flctl_platform_data *pdata;
 
-	match = of_match_device(of_flctl_match, dev);
-	if (match)
-		config = (struct flctl_soc_config *)match->data;
-	else {
+	config = of_device_get_match_data(dev);
+	if (!config) {
 		dev_err(dev, "%s: no OF configuration attached\n", __func__);
 		return NULL;
 	}

include/linux/mtd/nand-gpio.h

@@ -4,11 +4,6 @@
 #include <linux/mtd/rawnand.h>
 
 struct gpio_nand_platdata {
-	int	gpio_nce;
-	int	gpio_nwp;
-	int	gpio_cle;
-	int	gpio_ale;
-	int	gpio_rdy;
 	void	(*adjust_parts)(struct gpio_nand_platdata *, size_t);
 	struct mtd_partition *parts;
 	unsigned int num_parts;

include/linux/mtd/rawnand.h

@@ -177,6 +177,9 @@ enum nand_ecc_algo {
  */
 #define NAND_NEED_SCRAMBLING	0x00002000
 
+/* Device needs 3rd row address cycle */
+#define NAND_ROW_ADDR_3		0x00004000
+
 /* Options valid for Samsung large page devices */
 #define NAND_SAMSUNG_LP_OPTIONS NAND_CACHEPRG
 

include/linux/platform_data/mtd-nand-omap2.h

@@ -66,21 +66,4 @@ struct gpmc_nand_regs {
 	/* Deprecated. Do not use */
 	void __iomem	*gpmc_status;
 };
-
-struct omap_nand_platform_data {
-	int			cs;
-	struct mtd_partition	*parts;
-	int			nr_parts;
-	bool			flash_bbt;
-	enum nand_io		xfer_type;
-	int			devsize;
-	enum omap_ecc           ecc_opt;
-
-	struct device_node	*elm_of_node;
-
-	/* deprecated */
-	struct gpmc_nand_regs	reg;
-	struct device_node	*of_node;
-	bool			dev_ready;
-};
 #endif