/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Header file for the Atmel DDR/SDR SDRAM Controller
*
* Copyright (C) 2010 Atmel Corporation
* Nicolas Ferre <nicolas.ferre@atmel.com>
*/
#ifndef AT91SAM9_DDRSDR_H
#define AT91SAM9_DDRSDR_H
#define AT91_DDRSDRC_MR 0 x00 /* Mode Register */
#define AT91_DDRSDRC_MODE (0 x7 << 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 0 x04 /* Refresh Timer Register */
#define AT91_DDRSDRC_COUNT (0 xfff << 0 ) /* Refresh Timer Counter */
#define AT91_DDRSDRC_CR 0 x08 /* 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_NR_14 (3 << 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_RST_DLL (1 << 7 ) /* Reset DLL */
#define AT91_DDRSDRC_DICDS (1 << 8 ) /* Output impedance control */
#define AT91_DDRSDRC_DIS_DLL (1 << 9 ) /* Disable DLL [SAM9 Only] */
#define AT91_DDRSDRC_OCD (1 << 12 ) /* Off-Chip Driver [SAM9 Only] */
#define AT91_DDRSDRC_DQMS (1 << 16 ) /* Mask Data is Shared [SAM9 Only] */
#define AT91_DDRSDRC_ACTBST (1 << 18 ) /* Active Bank X to Burst Stop Read Access Bank Y [SAM9 Only] */
#define AT91_DDRSDRC_T0PR 0 x0C /* Timing 0 Register */
#define AT91_DDRSDRC_TRAS (0 xf << 0 ) /* Active to Precharge delay */
#define AT91_DDRSDRC_TRCD (0 xf << 4 ) /* Row to Column delay */
#define AT91_DDRSDRC_TWR (0 xf << 8 ) /* Write recovery delay */
#define AT91_DDRSDRC_TRC (0 xf << 12 ) /* Row cycle delay */
#define AT91_DDRSDRC_TRP (0 xf << 16 ) /* Row precharge delay */
#define AT91_DDRSDRC_TRRD (0 xf << 20 ) /* Active BankA to BankB */
#define AT91_DDRSDRC_TWTR (0 x7 << 24 ) /* Internal Write to Read delay */
#define AT91_DDRSDRC_RED_WRRD (0 x1 << 27 ) /* Reduce Write to Read Delay [SAM9 Only] */
#define AT91_DDRSDRC_TMRD (0 xf << 28 ) /* Load mode to active/refresh delay */
#define AT91_DDRSDRC_T1PR 0 x10 /* Timing 1 Register */
#define AT91_DDRSDRC_TRFC (0 x1f << 0 ) /* Row Cycle Delay */
#define AT91_DDRSDRC_TXSNR (0 xff << 8 ) /* Exit self-refresh to non-read */
#define AT91_DDRSDRC_TXSRD (0 xff << 16 ) /* Exit self-refresh to read */
#define AT91_DDRSDRC_TXP (0 xf << 24 ) /* Exit power-down delay */
#define AT91_DDRSDRC_T2PR 0 x14 /* Timing 2 Register [SAM9 Only] */
#define AT91_DDRSDRC_TXARD (0 xf << 0 ) /* Exit active power down delay to read command in mode "Fast Exit" */
#define AT91_DDRSDRC_TXARDS (0 xf << 4 ) /* Exit active power down delay to read command in mode "Slow Exit" */
#define AT91_DDRSDRC_TRPA (0 xf << 8 ) /* Row Precharge All delay */
#define AT91_DDRSDRC_TRTP (0 x7 << 12 ) /* Read to Precharge delay */
#define AT91_DDRSDRC_LPR 0 x1C /* 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_LPDDR2_PWOFF (1 << 3 ) /* LPDDR Power Off */
#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_APDE (1 << 16 ) /* Active power down exit time */
#define AT91_DDRSDRC_UPD_MR (3 << 20 ) /* Update load mode register and extended mode register */
#define AT91_DDRSDRC_MDR 0 x20 /* Memory Device Register */
#define AT91_DDRSDRC_MD (7 << 0 ) /* Memory Device Type */
#define AT91_DDRSDRC_MD_SDR 0
#define AT91_DDRSDRC_MD_LOW_POWER_SDR 1
#define AT91_DDRSDRC_MD_LOW_POWER_DDR 3
#define AT91_DDRSDRC_MD_LPDDR3 5
#define AT91_DDRSDRC_MD_DDR2 6 /* [SAM9 Only] */
#define AT91_DDRSDRC_MD_LPDDR2 7
#define AT91_DDRSDRC_DBW (1 << 4 ) /* Data Bus Width */
#define AT91_DDRSDRC_DBW_32BITS (0 << 4 )
#define AT91_DDRSDRC_DBW_16BITS (1 << 4 )
#define AT91_DDRSDRC_DLL 0 x24 /* 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_MDVAL (0 xff << 8 ) /* Master Delay value */
#define AT91_DDRSDRC_HS 0 x2C /* High Speed Register [SAM9 Only] */
#define AT91_DDRSDRC_DIS_ATCP_RD (1 << 2 ) /* Anticip read access is disabled */
#define AT91_DDRSDRC_DELAY(n) (0 x30 + (0 x4 * (n))) /* Delay I/O Register n */
#define AT91_DDRSDRC_WPMR 0 xE4 /* Write Protect Mode Register [SAM9 Only] */
#define AT91_DDRSDRC_WP (1 << 0 ) /* Write protect enable */
#define AT91_DDRSDRC_WPKEY (0 xffffff << 8 ) /* Write protect key */
#define AT91_DDRSDRC_KEY (0 x444452 << 8 ) /* Write protect key = "DDR" */
#define AT91_DDRSDRC_WPSR 0 xE8 /* Write Protect Status Register [SAM9 Only] */
#define AT91_DDRSDRC_WPVS (1 << 0 ) /* Write protect violation status */
#define AT91_DDRSDRC_WPVSRC (0 xffff << 8 ) /* Write protect violation source */
#endif
Messung V0.5 in Prozent C=96 H=94 G=94
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(vorverarbeitet am 2026-06-07)
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