arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h

/*
 * arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h
 *
 *  (C) 2008 Andrew Victor
 *
 * DDR/SDR Controller (DDRSDRC) - System peripherals registers.
 * Based on AT91CAP9 datasheet revision B.
 *
 * 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.
 */

#ifndef AT91CAP9_DDRSDR_H
#define AT91CAP9_DDRSDR_H

#define AT91_DDRSDRC_MR		0x00	/* Mode Register */
#define		AT91_DDRSDRC_MODE	(0xf << 0)		/* Command Mode */
#define			AT91_DDRSDRC_MODE_NORMAL		0
#define			AT91_DDRSDRC_MODE_NOP		1
#define			AT91_DDRSDRC_MODE_PRECHARGE	2
#define			AT91_DDRSDRC_MODE_LMR		3
#define			AT91_DDRSDRC_MODE_REFRESH	4
#define			AT91_DDRSDRC_MODE_EXT_LMR	5
#define			AT91_DDRSDRC_MODE_DEEP		6

#define AT91_DDRSDRC_RTR	0x04	/* Refresh Timer Register */
#define		AT91_DDRSDRC_COUNT	(0xfff << 0)		/* Refresh Timer Counter */

#define AT91_DDRSDRC_CR		0x08	/* Configuration Register */
#define		AT91_DDRSDRC_NC		(3 << 0)		/* Number of Column Bits */
#define			AT91_DDRSDRC_NC_SDR8	(0 << 0)
#define			AT91_DDRSDRC_NC_SDR9	(1 << 0)
#define			AT91_DDRSDRC_NC_SDR10	(2 << 0)
#define			AT91_DDRSDRC_NC_SDR11	(3 << 0)
#define			AT91_DDRSDRC_NC_DDR9	(0 << 0)
#define			AT91_DDRSDRC_NC_DDR10	(1 << 0)
#define			AT91_DDRSDRC_NC_DDR11	(2 << 0)
#define			AT91_DDRSDRC_NC_DDR12	(3 << 0)
#define		AT91_DDRSDRC_NR		(3 << 2)		/* Number of Row Bits */
#define			AT91_DDRSDRC_NR_11	(0 << 2)
#define			AT91_DDRSDRC_NR_12	(1 << 2)
#define			AT91_DDRSDRC_NR_13	(2 << 2)
#define		AT91_DDRSDRC_CAS	(7 << 4)		/* CAS Latency */
#define			AT91_DDRSDRC_CAS_2	(2 << 4)
#define			AT91_DDRSDRC_CAS_3	(3 << 4)
#define			AT91_DDRSDRC_CAS_25	(6 << 4)
#define		AT91_DDRSDRC_DLL	(1 << 7)		/* Reset DLL */
#define		AT91_DDRSDRC_DICDS	(1 << 8)		/* Output impedance control */

#define AT91_DDRSDRC_T0PR	0x0C	/* Timing 0 Register */
#define		AT91_DDRSDRC_TRAS	(0xf <<  0)		/* Active to Precharge delay */
#define		AT91_DDRSDRC_TRCD	(0xf <<  4)		/* Row to Column delay */
#define		AT91_DDRSDRC_TWR	(0xf <<  8)		/* Write recovery delay */
#define		AT91_DDRSDRC_TRC	(0xf << 12)		/* Row cycle delay */
#define		AT91_DDRSDRC_TRP	(0xf << 16)		/* Row precharge delay */
#define		AT91_DDRSDRC_TRRD	(0xf << 20)		/* Active BankA to BankB */
#define		AT91_DDRSDRC_TWTR	(1   << 24)		/* Internal Write to Read delay */
#define		AT91_DDRSDRC_TMRD	(0xf << 28)		/* Load mode to active/refresh delay */

#define AT91_DDRSDRC_T1PR	0x10	/* Timing 1 Register */
#define		AT91_DDRSDRC_TRFC	(0x1f << 0)		/* Row Cycle Delay */
#define		AT91_DDRSDRC_TXSNR	(0xff << 8)		/* Exit self-refresh to non-read */
#define		AT91_DDRSDRC_TXSRD	(0xff << 16)		/* Exit self-refresh to read */
#define		AT91_DDRSDRC_TXP	(0xf  << 24)		/* Exit power-down delay */

#define AT91_DDRSDRC_LPR	0x18	/* Low Power Register */
#define		AT91_DDRSDRC_LPCB		(3 << 0)	/* Low-power Configurations */
#define			AT91_DDRSDRC_LPCB_DISABLE		0
#define			AT91_DDRSDRC_LPCB_SELF_REFRESH		1
#define			AT91_DDRSDRC_LPCB_POWER_DOWN		2
#define			AT91_DDRSDRC_LPCB_DEEP_POWER_DOWN	3
#define		AT91_DDRSDRC_CLKFR		(1 << 2)	/* Clock Frozen */
#define		AT91_DDRSDRC_PASR		(7 << 4)	/* Partial Array Self Refresh */
#define		AT91_DDRSDRC_TCSR		(3 << 8)	/* Temperature Compensated Self Refresh */
#define		AT91_DDRSDRC_DS			(3 << 10)	/* Drive Strength */
#define		AT91_DDRSDRC_TIMEOUT		(3 << 12)	/* Time to define when Low Power Mode is enabled */
#define			AT91_DDRSDRC_TIMEOUT_0_CLK_CYCLES	(0 << 12)
#define			AT91_DDRSDRC_TIMEOUT_64_CLK_CYCLES	(1 << 12)
#define			AT91_DDRSDRC_TIMEOUT_128_CLK_CYCLES	(2 << 12)

#define AT91_DDRSDRC_MDR	0x1C	/* Memory Device Register */
#define		AT91_DDRSDRC_MD		(3 << 0)		/* Memory Device Type */
#define			AT91_DDRSDRC_MD_SDR		0
#define			AT91_DDRSDRC_MD_LOW_POWER_SDR	1
#define			AT91_DDRSDRC_MD_DDR		2
#define			AT91_DDRSDRC_MD_LOW_POWER_DDR	3

#define AT91_DDRSDRC_DLLR	0x20	/* DLL Information Register */
#define		AT91_DDRSDRC_MDINC	(1 << 0)		/* Master Delay increment */
#define		AT91_DDRSDRC_MDDEC	(1 << 1)		/* Master Delay decrement */
#define		AT91_DDRSDRC_MDOVF	(1 << 2)		/* Master Delay Overflow */
#define		AT91_DDRSDRC_SDCOVF	(1 << 3)		/* Slave Delay Correction Overflow */
#define		AT91_DDRSDRC_SDCUDF	(1 << 4)		/* Slave Delay Correction Underflow */
#define		AT91_DDRSDRC_SDERF	(1 << 5)		/* Slave Delay Correction error */
#define		AT91_DDRSDRC_MDVAL	(0xff <<  8)		/* Master Delay value */
#define		AT91_DDRSDRC_SDVAL	(0xff << 16)		/* Slave Delay value */
#define		AT91_DDRSDRC_SDCVAL	(0xff << 24)		/* Slave Delay Correction value */

/* Register access macros */
#define at91_ramc_read(num, reg) \
	at91_sys_read(AT91_DDRSDRC##num + reg)
#define at91_ramc_write(num, reg, value) \
	at91_sys_write(AT91_DDRSDRC##num + reg, value)


#endif