/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* arch/arm/mach-at91/include/mach/at91sam9_sdramc.h
*
* Copyright (C) 2007 Andrew Victor
* Copyright (C) 2007 Atmel Corporation.
*
* SDRAM Controllers (SDRAMC) - System peripherals registers.
* Based on AT91SAM9261 datasheet revision D.
*/
#ifndef AT91SAM9_SDRAMC_H
#define AT91SAM9_SDRAMC_H
/* SDRAM Controller (SDRAMC) registers */
#define AT91_SDRAMC_MR 0 x00 /* SDRAM Controller Mode Register */
#define AT91_SDRAMC_MODE (0 xf << 0 ) /* Command Mode */
#define AT91_SDRAMC_MODE_NORMAL 0
#define AT91_SDRAMC_MODE_NOP 1
#define AT91_SDRAMC_MODE_PRECHARGE 2
#define AT91_SDRAMC_MODE_LMR 3
#define AT91_SDRAMC_MODE_REFRESH 4
#define AT91_SDRAMC_MODE_EXT_LMR 5
#define AT91_SDRAMC_MODE_DEEP 6
#define AT91_SDRAMC_TR 0 x04 /* SDRAM Controller Refresh Timer Register */
#define AT91_SDRAMC_COUNT (0 xfff << 0 ) /* Refresh Timer Counter */
#define AT91_SDRAMC_CR 0 x08 /* SDRAM Controller Configuration Register */
#define AT91_SDRAMC_NC (3 << 0 ) /* Number of Column Bits */
#define AT91_SDRAMC_NC_8 (0 << 0 )
#define AT91_SDRAMC_NC_9 (1 << 0 )
#define AT91_SDRAMC_NC_10 (2 << 0 )
#define AT91_SDRAMC_NC_11 (3 << 0 )
#define AT91_SDRAMC_NR (3 << 2 ) /* Number of Row Bits */
#define AT91_SDRAMC_NR_11 (0 << 2 )
#define AT91_SDRAMC_NR_12 (1 << 2 )
#define AT91_SDRAMC_NR_13 (2 << 2 )
#define AT91_SDRAMC_NB (1 << 4 ) /* Number of Banks */
#define AT91_SDRAMC_NB_2 (0 << 4 )
#define AT91_SDRAMC_NB_4 (1 << 4 )
#define AT91_SDRAMC_CAS (3 << 5 ) /* CAS Latency */
#define AT91_SDRAMC_CAS_1 (1 << 5 )
#define AT91_SDRAMC_CAS_2 (2 << 5 )
#define AT91_SDRAMC_CAS_3 (3 << 5 )
#define AT91_SDRAMC_DBW (1 << 7 ) /* Data Bus Width */
#define AT91_SDRAMC_DBW_32 (0 << 7 )
#define AT91_SDRAMC_DBW_16 (1 << 7 )
#define AT91_SDRAMC_TWR (0 xf << 8 ) /* Write Recovery Delay */
#define AT91_SDRAMC_TRC (0 xf << 12 ) /* Row Cycle Delay */
#define AT91_SDRAMC_TRP (0 xf << 16 ) /* Row Precharge Delay */
#define AT91_SDRAMC_TRCD (0 xf << 20 ) /* Row to Column Delay */
#define AT91_SDRAMC_TRAS (0 xf << 24 ) /* Active to Precharge Delay */
#define AT91_SDRAMC_TXSR (0 xf << 28 ) /* Exit Self Refresh to Active Delay */
#define AT91_SDRAMC_LPR 0 x10 /* SDRAM Controller Low Power Register */
#define AT91_SDRAMC_LPCB (3 << 0 ) /* Low-power Configurations */
#define AT91_SDRAMC_LPCB_DISABLE 0
#define AT91_SDRAMC_LPCB_SELF_REFRESH 1
#define AT91_SDRAMC_LPCB_POWER_DOWN 2
#define AT91_SDRAMC_LPCB_DEEP_POWER_DOWN 3
#define AT91_SDRAMC_PASR (7 << 4 ) /* Partial Array Self Refresh */
#define AT91_SDRAMC_TCSR (3 << 8 ) /* Temperature Compensated Self Refresh */
#define AT91_SDRAMC_DS (3 << 10 ) /* Drive Strength */
#define AT91_SDRAMC_TIMEOUT (3 << 12 ) /* Time to define when Low Power Mode is enabled */
#define AT91_SDRAMC_TIMEOUT_0_CLK_CYCLES (0 << 12 )
#define AT91_SDRAMC_TIMEOUT_64_CLK_CYCLES (1 << 12 )
#define AT91_SDRAMC_TIMEOUT_128_CLK_CYCLES (2 << 12 )
#define AT91_SDRAMC_IER 0 x14 /* SDRAM Controller Interrupt Enable Register */
#define AT91_SDRAMC_IDR 0 x18 /* SDRAM Controller Interrupt Disable Register */
#define AT91_SDRAMC_IMR 0 x1C /* SDRAM Controller Interrupt Mask Register */
#define AT91_SDRAMC_ISR 0 x20 /* SDRAM Controller Interrupt Status Register */
#define AT91_SDRAMC_RES (1 << 0 ) /* Refresh Error Status */
#define AT91_SDRAMC_MDR 0 x24 /* SDRAM Memory Device Register */
#define AT91_SDRAMC_MD (3 << 0 ) /* Memory Device Type */
#define AT91_SDRAMC_MD_SDRAM 0
#define AT91_SDRAMC_MD_LOW_POWER_SDRAM 1
#endif
Messung V0.5 in Prozent C=96 H=93 G=94
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