drivers/memory/ti-gpmc.h - u-boot - Git at Google

 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Texas Instruments GPMC Driver
  *
  * Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/
  */

 /* GPMC register offsets */
 #define GPMC_REVISION		0x00
 #define GPMC_SYSCONFIG		0x10
 #define GPMC_SYSSTATUS		0x14
 #define GPMC_IRQSTATUS		0x18
 #define GPMC_IRQENABLE		0x1c
 #define GPMC_TIMEOUT_CONTROL	0x40
 #define GPMC_ERR_ADDRESS	0x44
 #define GPMC_ERR_TYPE		0x48
 #define GPMC_CONFIG		0x50
 #define GPMC_STATUS		0x54
 #define GPMC_PREFETCH_CONFIG1	0x1e0
 #define GPMC_PREFETCH_CONFIG2	0x1e4
 #define GPMC_PREFETCH_CONTROL	0x1ec
 #define GPMC_PREFETCH_STATUS	0x1f0
 #define GPMC_ECC_CONFIG		0x1f4
 #define GPMC_ECC_CONTROL	0x1f8
 #define GPMC_ECC_SIZE_CONFIG	0x1fc
 #define GPMC_ECC1_RESULT        0x200
 #define GPMC_ECC_BCH_RESULT_0   0x240   /* not available on OMAP2 */
 #define	GPMC_ECC_BCH_RESULT_1	0x244	/* not available on OMAP2 */
 #define	GPMC_ECC_BCH_RESULT_2	0x248	/* not available on OMAP2 */
 #define	GPMC_ECC_BCH_RESULT_3	0x24c	/* not available on OMAP2 */
 #define	GPMC_ECC_BCH_RESULT_4	0x300	/* not available on OMAP2 */
 #define	GPMC_ECC_BCH_RESULT_5	0x304	/* not available on OMAP2 */
 #define	GPMC_ECC_BCH_RESULT_6	0x308	/* not available on OMAP2 */

 /* GPMC ECC control settings */
 #define GPMC_ECC_CTRL_ECCCLEAR		0x100
 #define GPMC_ECC_CTRL_ECCDISABLE	0x000
 #define GPMC_ECC_CTRL_ECCREG1		0x001
 #define GPMC_ECC_CTRL_ECCREG2		0x002
 #define GPMC_ECC_CTRL_ECCREG3		0x003
 #define GPMC_ECC_CTRL_ECCREG4		0x004
 #define GPMC_ECC_CTRL_ECCREG5		0x005
 #define GPMC_ECC_CTRL_ECCREG6		0x006
 #define GPMC_ECC_CTRL_ECCREG7		0x007
 #define GPMC_ECC_CTRL_ECCREG8		0x008
 #define GPMC_ECC_CTRL_ECCREG9		0x009

 #define GPMC_CONFIG_LIMITEDADDRESS		BIT(1)

 #define GPMC_STATUS_EMPTYWRITEBUFFERSTATUS	BIT(0)

 #define	GPMC_CONFIG2_CSEXTRADELAY		BIT(7)
 #define	GPMC_CONFIG3_ADVEXTRADELAY		BIT(7)
 #define	GPMC_CONFIG4_OEEXTRADELAY		BIT(7)
 #define	GPMC_CONFIG4_WEEXTRADELAY		BIT(23)
 #define	GPMC_CONFIG6_CYCLE2CYCLEDIFFCSEN	BIT(6)
 #define	GPMC_CONFIG6_CYCLE2CYCLESAMECSEN	BIT(7)

 #define GPMC_CS0_OFFSET		0x60
 #define GPMC_CS_SIZE		0x30
 #define	GPMC_BCH_SIZE		0x10

 /*
  * The first 1MB of GPMC address space is typically mapped to
  * the internal ROM. Never allocate the first page, to
  * facilitate bug detection; even if we didn't boot from ROM.
  * As GPMC minimum partition size is 16MB we can only start from
  * there.
  */
 #define GPMC_MEM_START		0x1000000
 #define GPMC_MEM_END		0x3FFFFFFF

 #define GPMC_CHUNK_SHIFT	24		/* 16 MB */
 #define GPMC_SECTION_SHIFT	28		/* 128 MB */

 #define CS_NUM_SHIFT		24
 #define ENABLE_PREFETCH		(0x1 << 7)
 #define DMA_MPU_MODE		2

 #define	GPMC_REVISION_MAJOR(l)		(((l) >> 4) & 0xf)
 #define	GPMC_REVISION_MINOR(l)		((l) & 0xf)

 #define	GPMC_HAS_WR_ACCESS		0x1
 #define	GPMC_HAS_WR_DATA_MUX_BUS	0x2
 #define	GPMC_HAS_MUX_AAD		0x4

 #define GPMC_NR_WAITPINS		4

 #define GPMC_CS_CONFIG1		0x00
 #define GPMC_CS_CONFIG2		0x04
 #define GPMC_CS_CONFIG3		0x08
 #define GPMC_CS_CONFIG4		0x0c
 #define GPMC_CS_CONFIG5		0x10
 #define GPMC_CS_CONFIG6		0x14
 #define GPMC_CS_CONFIG7		0x18
 #define GPMC_CS_NAND_COMMAND	0x1c
 #define GPMC_CS_NAND_ADDRESS	0x20
 #define GPMC_CS_NAND_DATA	0x24

 /* Control Commands */
 #define GPMC_CONFIG_RDY_BSY	0x00000001
 #define GPMC_CONFIG_DEV_SIZE	0x00000002
 #define GPMC_CONFIG_DEV_TYPE	0x00000003

 #define GPMC_CONFIG_WP          0x00000005

 #define GPMC_CONFIG1_WRAPBURST_SUPP     BIT(31)
 #define GPMC_CONFIG1_READMULTIPLE_SUPP  BIT(30)
 #define GPMC_CONFIG1_READTYPE_ASYNC     (0 << 29)
 #define GPMC_CONFIG1_READTYPE_SYNC      BIT(29)
 #define GPMC_CONFIG1_WRITEMULTIPLE_SUPP BIT(28)
 #define GPMC_CONFIG1_WRITETYPE_ASYNC    (0 << 27)
 #define GPMC_CONFIG1_WRITETYPE_SYNC     BIT(27)
 #define GPMC_CONFIG1_CLKACTIVATIONTIME(val) (((val) & 3) << 25)
 /** CLKACTIVATIONTIME Max Ticks */
 #define GPMC_CONFIG1_CLKACTIVATIONTIME_MAX 2
 #define GPMC_CONFIG1_PAGE_LEN(val)      (((val) & 3) << 23)
 /** ATTACHEDDEVICEPAGELENGTH Max Value */
 #define GPMC_CONFIG1_ATTACHEDDEVICEPAGELENGTH_MAX 2
 #define GPMC_CONFIG1_WAIT_READ_MON      BIT(22)
 #define GPMC_CONFIG1_WAIT_WRITE_MON     BIT(21)
 #define GPMC_CONFIG1_WAIT_MON_TIME(val) (((val) & 3) << 18)
 /** WAITMONITORINGTIME Max Ticks */
 #define GPMC_CONFIG1_WAITMONITORINGTIME_MAX  2
 #define GPMC_CONFIG1_WAIT_PIN_SEL(val)  (((val) & 3) << 16)
 #define GPMC_CONFIG1_DEVICESIZE(val)    (((val) & 3) << 12)
 #define GPMC_CONFIG1_DEVICESIZE_16      GPMC_CONFIG1_DEVICESIZE(1)
 /** DEVICESIZE Max Value */
 #define GPMC_CONFIG1_DEVICESIZE_MAX     1
 #define GPMC_CONFIG1_DEVICETYPE(val)    (((val) & 3) << 10)
 #define GPMC_CONFIG1_DEVICETYPE_NOR     GPMC_CONFIG1_DEVICETYPE(0)
 #define GPMC_CONFIG1_MUXTYPE(val)       (((val) & 3) << 8)
 #define GPMC_CONFIG1_TIME_PARA_GRAN     BIT(4)
 #define GPMC_CONFIG1_FCLK_DIV(val)      ((val) & 3)
 #define GPMC_CONFIG1_FCLK_DIV2          (GPMC_CONFIG1_FCLK_DIV(1))
 #define GPMC_CONFIG1_FCLK_DIV3          (GPMC_CONFIG1_FCLK_DIV(2))
 #define GPMC_CONFIG1_FCLK_DIV4          (GPMC_CONFIG1_FCLK_DIV(3))
 #define GPMC_CONFIG7_CSVALID		BIT(6)

 #define GPMC_CONFIG7_BASEADDRESS_MASK	0x3f
 #define GPMC_CONFIG7_CSVALID_MASK	BIT(6)
 #define GPMC_CONFIG7_MASKADDRESS_OFFSET	8
 #define GPMC_CONFIG7_MASKADDRESS_MASK	(0xf << GPMC_CONFIG7_MASKADDRESS_OFFSET)
 /* All CONFIG7 bits except reserved bits */
 #define GPMC_CONFIG7_MASK		(GPMC_CONFIG7_BASEADDRESS_MASK | \
 					 GPMC_CONFIG7_CSVALID_MASK |     \
 					 GPMC_CONFIG7_MASKADDRESS_MASK)

 #define GPMC_DEVICETYPE_NOR		0
 #define GPMC_DEVICETYPE_NAND		2
 #define GPMC_CONFIG_WRITEPROTECT	0x00000010
 #define WR_RD_PIN_MONITORING		0x00600000

 /* ECC commands */
 #define GPMC_ECC_READ		0 /* Reset Hardware ECC for read */
 #define GPMC_ECC_WRITE		1 /* Reset Hardware ECC for write */
 #define GPMC_ECC_READSYN	2 /* Reset before syndrom is read back */

 #define	GPMC_NR_NAND_IRQS	2 /* number of NAND specific IRQs */

 /* bool type time settings */
 struct gpmc_bool_timings {
 	bool cycle2cyclediffcsen;
 	bool cycle2cyclesamecsen;
 	bool we_extra_delay;
 	bool oe_extra_delay;
 	bool adv_extra_delay;
 	bool cs_extra_delay;
 	bool time_para_granularity;
 };

 /*
  * Note that all values in this struct are in nanoseconds except sync_clk
  * (which is in picoseconds), while the register values are in gpmc_fck cycles.
  */
 struct gpmc_timings {
 	/* Minimum clock period for synchronous mode (in picoseconds) */
 	u32 sync_clk;

 	/* Chip-select signal timings corresponding to GPMC_CS_CONFIG2 */
 	u32 cs_on;		/* Assertion time */
 	u32 cs_rd_off;		/* Read deassertion time */
 	u32 cs_wr_off;		/* Write deassertion time */

 	/* ADV signal timings corresponding to GPMC_CONFIG3 */
 	u32 adv_on;		/* Assertion time */
 	u32 adv_rd_off;		/* Read deassertion time */
 	u32 adv_wr_off;		/* Write deassertion time */
 	u32 adv_aad_mux_on;	/* ADV assertion time for AAD */
 	u32 adv_aad_mux_rd_off;	/* ADV read deassertion time for AAD */
 	u32 adv_aad_mux_wr_off;	/* ADV write deassertion time for AAD */

 	/* WE signals timings corresponding to GPMC_CONFIG4 */
 	u32 we_on;		/* WE assertion time */
 	u32 we_off;		/* WE deassertion time */

 	/* OE signals timings corresponding to GPMC_CONFIG4 */
 	u32 oe_on;		/* OE assertion time */
 	u32 oe_off;		/* OE deassertion time */
 	u32 oe_aad_mux_on;	/* OE assertion time for AAD */
 	u32 oe_aad_mux_off;	/* OE deassertion time for AAD */

 	/* Access time and cycle time timings corresponding to GPMC_CONFIG5 */
 	u32 page_burst_access;	/* Multiple access word delay */
 	u32 access;		/* Start-cycle to first data valid delay */
 	u32 rd_cycle;		/* Total read cycle time */
 	u32 wr_cycle;		/* Total write cycle time */

 	u32 bus_turnaround;
 	u32 cycle2cycle_delay;

 	u32 wait_monitoring;
 	u32 clk_activation;

 	/* The following are only on OMAP3430 */
 	u32 wr_access;		/* WRACCESSTIME */
 	u32 wr_data_mux_bus;	/* WRDATAONADMUXBUS */

 	struct gpmc_bool_timings bool_timings;
 };

 /* Device timings in picoseconds */
 struct gpmc_device_timings {
 	u32 t_ceasu;	/* address setup to CS valid */
 	u32 t_avdasu;	/* address setup to ADV valid */
 	/* XXX: try to combine t_avdp_r & t_avdp_w. Issue is
 	 * of tusb using these timings even for sync whilst
 	 * ideally for adv_rd/(wr)_off it should have considered
 	 * t_avdh instead. This indirectly necessitates r/w
 	 * variations of t_avdp as it is possible to have one
 	 * sync & other async
 	 */
 	u32 t_avdp_r;	/* ADV low time (what about t_cer ?) */
 	u32 t_avdp_w;
 	u32 t_aavdh;	/* address hold time */
 	u32 t_oeasu;	/* address setup to OE valid */
 	u32 t_aa;	/* access time from ADV assertion */
 	u32 t_iaa;	/* initial access time */
 	u32 t_oe;	/* access time from OE assertion */
 	u32 t_ce;	/* access time from CS asertion */
 	u32 t_rd_cycle;	/* read cycle time */
 	u32 t_cez_r;	/* read CS deassertion to high Z */
 	u32 t_cez_w;	/* write CS deassertion to high Z */
 	u32 t_oez;	/* OE deassertion to high Z */
 	u32 t_weasu;	/* address setup to WE valid */
 	u32 t_wpl;	/* write assertion time */
 	u32 t_wph;	/* write deassertion time */
 	u32 t_wr_cycle;	/* write cycle time */

 	u32 clk;
 	u32 t_bacc;	/* burst access valid clock to output delay */
 	u32 t_ces;	/* CS setup time to clk */
 	u32 t_avds;	/* ADV setup time to clk */
 	u32 t_avdh;	/* ADV hold time from clk */
 	u32 t_ach;	/* address hold time from clk */
 	u32 t_rdyo;	/* clk to ready valid */

 	u32 t_ce_rdyz;	/* XXX: description ?, or use t_cez instead */
 	u32 t_ce_avd;	/* CS on to ADV on delay */

 	/* XXX: check the possibility of combining
 	 * cyc_aavhd_oe & cyc_aavdh_we
 	 */
 	u8 cyc_aavdh_oe;/* read address hold time in cycles */
 	u8 cyc_aavdh_we;/* write address hold time in cycles */
 	u8 cyc_oe;	/* access time from OE assertion in cycles */
 	u8 cyc_wpl;	/* write deassertion time in cycles */
 	u32 cyc_iaa;	/* initial access time in cycles */

 	/* extra delays */
 	bool ce_xdelay;
 	bool avd_xdelay;
 	bool oe_xdelay;
 	bool we_xdelay;
 };

 #define GPMC_BURST_4			4	/* 4 word burst */
 #define GPMC_BURST_8			8	/* 8 word burst */
 #define GPMC_BURST_16			16	/* 16 word burst */
 #define GPMC_DEVWIDTH_8BIT		1	/* 8-bit device width */
 #define GPMC_DEVWIDTH_16BIT		2	/* 16-bit device width */
 #define GPMC_MUX_AAD			1	/* Addr-Addr-Data multiplex */
 #define GPMC_MUX_AD			2	/* Addr-Data multiplex */

 struct gpmc_settings {
 	bool burst_wrap;	/* enables wrap bursting */
 	bool burst_read;	/* enables read page/burst mode */
 	bool burst_write;	/* enables write page/burst mode */
 	bool device_nand;	/* device is NAND */
 	bool sync_read;		/* enables synchronous reads */
 	bool sync_write;	/* enables synchronous writes */
 	bool wait_on_read;	/* monitor wait on reads */
 	bool wait_on_write;	/* monitor wait on writes */
 	u32 burst_len;		/* page/burst length */
 	u32 device_width;	/* device bus width (8 or 16 bit) */
 	u32 mux_add_data;	/* multiplex address & data */
 	u32 wait_pin;		/* wait-pin to be used */
 };
	/* SPDX-License-Identifier: GPL-2.0+ */
	/*
	* Texas Instruments GPMC Driver
	*
	* Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/
	*/

	/* GPMC register offsets */
	#define GPMC_REVISION 0x00
	#define GPMC_SYSCONFIG 0x10
	#define GPMC_SYSSTATUS 0x14
	#define GPMC_IRQSTATUS 0x18
	#define GPMC_IRQENABLE 0x1c
	#define GPMC_TIMEOUT_CONTROL 0x40
	#define GPMC_ERR_ADDRESS 0x44
	#define GPMC_ERR_TYPE 0x48
	#define GPMC_CONFIG 0x50
	#define GPMC_STATUS 0x54
	#define GPMC_PREFETCH_CONFIG1 0x1e0
	#define GPMC_PREFETCH_CONFIG2 0x1e4
	#define GPMC_PREFETCH_CONTROL 0x1ec
	#define GPMC_PREFETCH_STATUS 0x1f0
	#define GPMC_ECC_CONFIG 0x1f4
	#define GPMC_ECC_CONTROL 0x1f8
	#define GPMC_ECC_SIZE_CONFIG 0x1fc
	#define GPMC_ECC1_RESULT 0x200
	#define GPMC_ECC_BCH_RESULT_0 0x240 /* not available on OMAP2 */
	#define GPMC_ECC_BCH_RESULT_1 0x244 /* not available on OMAP2 */
	#define GPMC_ECC_BCH_RESULT_2 0x248 /* not available on OMAP2 */
	#define GPMC_ECC_BCH_RESULT_3 0x24c /* not available on OMAP2 */
	#define GPMC_ECC_BCH_RESULT_4 0x300 /* not available on OMAP2 */
	#define GPMC_ECC_BCH_RESULT_5 0x304 /* not available on OMAP2 */
	#define GPMC_ECC_BCH_RESULT_6 0x308 /* not available on OMAP2 */

	/* GPMC ECC control settings */
	#define GPMC_ECC_CTRL_ECCCLEAR 0x100
	#define GPMC_ECC_CTRL_ECCDISABLE 0x000
	#define GPMC_ECC_CTRL_ECCREG1 0x001
	#define GPMC_ECC_CTRL_ECCREG2 0x002
	#define GPMC_ECC_CTRL_ECCREG3 0x003
	#define GPMC_ECC_CTRL_ECCREG4 0x004
	#define GPMC_ECC_CTRL_ECCREG5 0x005
	#define GPMC_ECC_CTRL_ECCREG6 0x006
	#define GPMC_ECC_CTRL_ECCREG7 0x007
	#define GPMC_ECC_CTRL_ECCREG8 0x008
	#define GPMC_ECC_CTRL_ECCREG9 0x009

	#define GPMC_CONFIG_LIMITEDADDRESS BIT(1)

	#define GPMC_STATUS_EMPTYWRITEBUFFERSTATUS BIT(0)

	#define GPMC_CONFIG2_CSEXTRADELAY BIT(7)
	#define GPMC_CONFIG3_ADVEXTRADELAY BIT(7)
	#define GPMC_CONFIG4_OEEXTRADELAY BIT(7)
	#define GPMC_CONFIG4_WEEXTRADELAY BIT(23)
	#define GPMC_CONFIG6_CYCLE2CYCLEDIFFCSEN BIT(6)
	#define GPMC_CONFIG6_CYCLE2CYCLESAMECSEN BIT(7)

	#define GPMC_CS0_OFFSET 0x60
	#define GPMC_CS_SIZE 0x30
	#define GPMC_BCH_SIZE 0x10

	/*
	* The first 1MB of GPMC address space is typically mapped to
	* the internal ROM. Never allocate the first page, to
	* facilitate bug detection; even if we didn't boot from ROM.
	* As GPMC minimum partition size is 16MB we can only start from
	* there.
	*/
	#define GPMC_MEM_START 0x1000000
	#define GPMC_MEM_END 0x3FFFFFFF

	#define GPMC_CHUNK_SHIFT 24 /* 16 MB */
	#define GPMC_SECTION_SHIFT 28 /* 128 MB */

	#define CS_NUM_SHIFT 24
	#define ENABLE_PREFETCH (0x1 << 7)
	#define DMA_MPU_MODE 2

	#define GPMC_REVISION_MAJOR(l) (((l) >> 4) & 0xf)
	#define GPMC_REVISION_MINOR(l) ((l) & 0xf)

	#define GPMC_HAS_WR_ACCESS 0x1
	#define GPMC_HAS_WR_DATA_MUX_BUS 0x2
	#define GPMC_HAS_MUX_AAD 0x4

	#define GPMC_NR_WAITPINS 4

	#define GPMC_CS_CONFIG1 0x00
	#define GPMC_CS_CONFIG2 0x04
	#define GPMC_CS_CONFIG3 0x08
	#define GPMC_CS_CONFIG4 0x0c
	#define GPMC_CS_CONFIG5 0x10
	#define GPMC_CS_CONFIG6 0x14
	#define GPMC_CS_CONFIG7 0x18
	#define GPMC_CS_NAND_COMMAND 0x1c
	#define GPMC_CS_NAND_ADDRESS 0x20
	#define GPMC_CS_NAND_DATA 0x24

	/* Control Commands */
	#define GPMC_CONFIG_RDY_BSY 0x00000001
	#define GPMC_CONFIG_DEV_SIZE 0x00000002
	#define GPMC_CONFIG_DEV_TYPE 0x00000003

	#define GPMC_CONFIG_WP 0x00000005

	#define GPMC_CONFIG1_WRAPBURST_SUPP BIT(31)
	#define GPMC_CONFIG1_READMULTIPLE_SUPP BIT(30)
	#define GPMC_CONFIG1_READTYPE_ASYNC (0 << 29)
	#define GPMC_CONFIG1_READTYPE_SYNC BIT(29)
	#define GPMC_CONFIG1_WRITEMULTIPLE_SUPP BIT(28)
	#define GPMC_CONFIG1_WRITETYPE_ASYNC (0 << 27)
	#define GPMC_CONFIG1_WRITETYPE_SYNC BIT(27)
	#define GPMC_CONFIG1_CLKACTIVATIONTIME(val) (((val) & 3) << 25)
	/** CLKACTIVATIONTIME Max Ticks */
	#define GPMC_CONFIG1_CLKACTIVATIONTIME_MAX 2
	#define GPMC_CONFIG1_PAGE_LEN(val) (((val) & 3) << 23)
	/** ATTACHEDDEVICEPAGELENGTH Max Value */
	#define GPMC_CONFIG1_ATTACHEDDEVICEPAGELENGTH_MAX 2
	#define GPMC_CONFIG1_WAIT_READ_MON BIT(22)
	#define GPMC_CONFIG1_WAIT_WRITE_MON BIT(21)
	#define GPMC_CONFIG1_WAIT_MON_TIME(val) (((val) & 3) << 18)
	/** WAITMONITORINGTIME Max Ticks */
	#define GPMC_CONFIG1_WAITMONITORINGTIME_MAX 2
	#define GPMC_CONFIG1_WAIT_PIN_SEL(val) (((val) & 3) << 16)
	#define GPMC_CONFIG1_DEVICESIZE(val) (((val) & 3) << 12)
	#define GPMC_CONFIG1_DEVICESIZE_16 GPMC_CONFIG1_DEVICESIZE(1)
	/** DEVICESIZE Max Value */
	#define GPMC_CONFIG1_DEVICESIZE_MAX 1
	#define GPMC_CONFIG1_DEVICETYPE(val) (((val) & 3) << 10)
	#define GPMC_CONFIG1_DEVICETYPE_NOR GPMC_CONFIG1_DEVICETYPE(0)
	#define GPMC_CONFIG1_MUXTYPE(val) (((val) & 3) << 8)
	#define GPMC_CONFIG1_TIME_PARA_GRAN BIT(4)
	#define GPMC_CONFIG1_FCLK_DIV(val) ((val) & 3)
	#define GPMC_CONFIG1_FCLK_DIV2 (GPMC_CONFIG1_FCLK_DIV(1))
	#define GPMC_CONFIG1_FCLK_DIV3 (GPMC_CONFIG1_FCLK_DIV(2))
	#define GPMC_CONFIG1_FCLK_DIV4 (GPMC_CONFIG1_FCLK_DIV(3))
	#define GPMC_CONFIG7_CSVALID BIT(6)

	#define GPMC_CONFIG7_BASEADDRESS_MASK 0x3f
	#define GPMC_CONFIG7_CSVALID_MASK BIT(6)
	#define GPMC_CONFIG7_MASKADDRESS_OFFSET 8
	#define GPMC_CONFIG7_MASKADDRESS_MASK (0xf << GPMC_CONFIG7_MASKADDRESS_OFFSET)
	/* All CONFIG7 bits except reserved bits */
	#define GPMC_CONFIG7_MASK (GPMC_CONFIG7_BASEADDRESS_MASK \| \
	GPMC_CONFIG7_CSVALID_MASK \| \
	GPMC_CONFIG7_MASKADDRESS_MASK)

	#define GPMC_DEVICETYPE_NOR 0
	#define GPMC_DEVICETYPE_NAND 2
	#define GPMC_CONFIG_WRITEPROTECT 0x00000010
	#define WR_RD_PIN_MONITORING 0x00600000

	/* ECC commands */
	#define GPMC_ECC_READ 0 /* Reset Hardware ECC for read */
	#define GPMC_ECC_WRITE 1 /* Reset Hardware ECC for write */
	#define GPMC_ECC_READSYN 2 /* Reset before syndrom is read back */

	#define GPMC_NR_NAND_IRQS 2 /* number of NAND specific IRQs */

	/* bool type time settings */
	struct gpmc_bool_timings {
	bool cycle2cyclediffcsen;
	bool cycle2cyclesamecsen;
	bool we_extra_delay;
	bool oe_extra_delay;
	bool adv_extra_delay;
	bool cs_extra_delay;
	bool time_para_granularity;
	};

	/*
	* Note that all values in this struct are in nanoseconds except sync_clk
	* (which is in picoseconds), while the register values are in gpmc_fck cycles.
	*/
	struct gpmc_timings {
	/* Minimum clock period for synchronous mode (in picoseconds) */
	u32 sync_clk;

	/* Chip-select signal timings corresponding to GPMC_CS_CONFIG2 */
	u32 cs_on; /* Assertion time */
	u32 cs_rd_off; /* Read deassertion time */
	u32 cs_wr_off; /* Write deassertion time */

	/* ADV signal timings corresponding to GPMC_CONFIG3 */
	u32 adv_on; /* Assertion time */
	u32 adv_rd_off; /* Read deassertion time */
	u32 adv_wr_off; /* Write deassertion time */
	u32 adv_aad_mux_on; /* ADV assertion time for AAD */
	u32 adv_aad_mux_rd_off; /* ADV read deassertion time for AAD */
	u32 adv_aad_mux_wr_off; /* ADV write deassertion time for AAD */

	/* WE signals timings corresponding to GPMC_CONFIG4 */
	u32 we_on; /* WE assertion time */
	u32 we_off; /* WE deassertion time */

	/* OE signals timings corresponding to GPMC_CONFIG4 */
	u32 oe_on; /* OE assertion time */
	u32 oe_off; /* OE deassertion time */
	u32 oe_aad_mux_on; /* OE assertion time for AAD */
	u32 oe_aad_mux_off; /* OE deassertion time for AAD */

	/* Access time and cycle time timings corresponding to GPMC_CONFIG5 */
	u32 page_burst_access; /* Multiple access word delay */
	u32 access; /* Start-cycle to first data valid delay */
	u32 rd_cycle; /* Total read cycle time */
	u32 wr_cycle; /* Total write cycle time */

	u32 bus_turnaround;
	u32 cycle2cycle_delay;

	u32 wait_monitoring;
	u32 clk_activation;

	/* The following are only on OMAP3430 */
	u32 wr_access; /* WRACCESSTIME */
	u32 wr_data_mux_bus; /* WRDATAONADMUXBUS */

	struct gpmc_bool_timings bool_timings;
	};

	/* Device timings in picoseconds */
	struct gpmc_device_timings {
	u32 t_ceasu; /* address setup to CS valid */
	u32 t_avdasu; /* address setup to ADV valid */
	/* XXX: try to combine t_avdp_r & t_avdp_w. Issue is
	* of tusb using these timings even for sync whilst
	* ideally for adv_rd/(wr)_off it should have considered
	* t_avdh instead. This indirectly necessitates r/w
	* variations of t_avdp as it is possible to have one
	* sync & other async
	*/
	u32 t_avdp_r; /* ADV low time (what about t_cer ?) */
	u32 t_avdp_w;
	u32 t_aavdh; /* address hold time */
	u32 t_oeasu; /* address setup to OE valid */
	u32 t_aa; /* access time from ADV assertion */
	u32 t_iaa; /* initial access time */
	u32 t_oe; /* access time from OE assertion */
	u32 t_ce; /* access time from CS asertion */
	u32 t_rd_cycle; /* read cycle time */
	u32 t_cez_r; /* read CS deassertion to high Z */
	u32 t_cez_w; /* write CS deassertion to high Z */
	u32 t_oez; /* OE deassertion to high Z */
	u32 t_weasu; /* address setup to WE valid */
	u32 t_wpl; /* write assertion time */
	u32 t_wph; /* write deassertion time */
	u32 t_wr_cycle; /* write cycle time */

	u32 clk;
	u32 t_bacc; /* burst access valid clock to output delay */
	u32 t_ces; /* CS setup time to clk */
	u32 t_avds; /* ADV setup time to clk */
	u32 t_avdh; /* ADV hold time from clk */
	u32 t_ach; /* address hold time from clk */
	u32 t_rdyo; /* clk to ready valid */

	u32 t_ce_rdyz; /* XXX: description ?, or use t_cez instead */
	u32 t_ce_avd; /* CS on to ADV on delay */

	/* XXX: check the possibility of combining
	* cyc_aavhd_oe & cyc_aavdh_we
	*/
	u8 cyc_aavdh_oe;/* read address hold time in cycles */
	u8 cyc_aavdh_we;/* write address hold time in cycles */
	u8 cyc_oe; /* access time from OE assertion in cycles */
	u8 cyc_wpl; /* write deassertion time in cycles */
	u32 cyc_iaa; /* initial access time in cycles */

	/* extra delays */
	bool ce_xdelay;
	bool avd_xdelay;
	bool oe_xdelay;
	bool we_xdelay;
	};

	#define GPMC_BURST_4 4 /* 4 word burst */
	#define GPMC_BURST_8 8 /* 8 word burst */
	#define GPMC_BURST_16 16 /* 16 word burst */
	#define GPMC_DEVWIDTH_8BIT 1 /* 8-bit device width */
	#define GPMC_DEVWIDTH_16BIT 2 /* 16-bit device width */
	#define GPMC_MUX_AAD 1 /* Addr-Addr-Data multiplex */
	#define GPMC_MUX_AD 2 /* Addr-Data multiplex */

	struct gpmc_settings {
	bool burst_wrap; /* enables wrap bursting */
	bool burst_read; /* enables read page/burst mode */
	bool burst_write; /* enables write page/burst mode */
	bool device_nand; /* device is NAND */
	bool sync_read; /* enables synchronous reads */
	bool sync_write; /* enables synchronous writes */
	bool wait_on_read; /* monitor wait on reads */
	bool wait_on_write; /* monitor wait on writes */
	u32 burst_len; /* page/burst length */
	u32 device_width; /* device bus width (8 or 16 bit) */
	u32 mux_add_data; /* multiplex address & data */
	u32 wait_pin; /* wait-pin to be used */
	};