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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * arch/arm/mach-at91/include/mach/at91sam9_sdramc.h4 *5 * Copyright (C) 2007 Andrew Victor6 * Copyright (C) 2007 Atmel Corporation.7 *8 * SDRAM Controllers (SDRAMC) - System peripherals registers.9 * Based on AT91SAM9261 datasheet revision D.10 */11 12#ifndef AT91SAM9_SDRAMC_H13#define AT91SAM9_SDRAMC_H14 15/* SDRAM Controller (SDRAMC) registers */16#define AT91_SDRAMC_MR		0x00	/* SDRAM Controller Mode Register */17#define		AT91_SDRAMC_MODE	(0xf << 0)		/* Command Mode */18#define			AT91_SDRAMC_MODE_NORMAL		019#define			AT91_SDRAMC_MODE_NOP		120#define			AT91_SDRAMC_MODE_PRECHARGE	221#define			AT91_SDRAMC_MODE_LMR		322#define			AT91_SDRAMC_MODE_REFRESH	423#define			AT91_SDRAMC_MODE_EXT_LMR	524#define			AT91_SDRAMC_MODE_DEEP		625 26#define AT91_SDRAMC_TR		0x04	/* SDRAM Controller Refresh Timer Register */27#define		AT91_SDRAMC_COUNT	(0xfff << 0)		/* Refresh Timer Counter */28 29#define AT91_SDRAMC_CR		0x08	/* SDRAM Controller Configuration Register */30#define		AT91_SDRAMC_NC		(3 << 0)		/* Number of Column Bits */31#define			AT91_SDRAMC_NC_8	(0 << 0)32#define			AT91_SDRAMC_NC_9	(1 << 0)33#define			AT91_SDRAMC_NC_10	(2 << 0)34#define			AT91_SDRAMC_NC_11	(3 << 0)35#define		AT91_SDRAMC_NR		(3 << 2)		/* Number of Row Bits */36#define			AT91_SDRAMC_NR_11	(0 << 2)37#define			AT91_SDRAMC_NR_12	(1 << 2)38#define			AT91_SDRAMC_NR_13	(2 << 2)39#define		AT91_SDRAMC_NB		(1 << 4)		/* Number of Banks */40#define			AT91_SDRAMC_NB_2	(0 << 4)41#define			AT91_SDRAMC_NB_4	(1 << 4)42#define		AT91_SDRAMC_CAS		(3 << 5)		/* CAS Latency */43#define			AT91_SDRAMC_CAS_1	(1 << 5)44#define			AT91_SDRAMC_CAS_2	(2 << 5)45#define			AT91_SDRAMC_CAS_3	(3 << 5)46#define		AT91_SDRAMC_DBW		(1 << 7)		/* Data Bus Width */47#define			AT91_SDRAMC_DBW_32	(0 << 7)48#define			AT91_SDRAMC_DBW_16	(1 << 7)49#define		AT91_SDRAMC_TWR		(0xf <<  8)		/* Write Recovery Delay */50#define		AT91_SDRAMC_TRC		(0xf << 12)		/* Row Cycle Delay */51#define		AT91_SDRAMC_TRP		(0xf << 16)		/* Row Precharge Delay */52#define		AT91_SDRAMC_TRCD	(0xf << 20)		/* Row to Column Delay */53#define		AT91_SDRAMC_TRAS	(0xf << 24)		/* Active to Precharge Delay */54#define		AT91_SDRAMC_TXSR	(0xf << 28)		/* Exit Self Refresh to Active Delay */55 56#define AT91_SDRAMC_LPR		0x10	/* SDRAM Controller Low Power Register */57#define		AT91_SDRAMC_LPCB		(3 << 0)	/* Low-power Configurations */58#define			AT91_SDRAMC_LPCB_DISABLE		059#define			AT91_SDRAMC_LPCB_SELF_REFRESH		160#define			AT91_SDRAMC_LPCB_POWER_DOWN		261#define			AT91_SDRAMC_LPCB_DEEP_POWER_DOWN	362#define		AT91_SDRAMC_PASR		(7 << 4)	/* Partial Array Self Refresh */63#define		AT91_SDRAMC_TCSR		(3 << 8)	/* Temperature Compensated Self Refresh */64#define		AT91_SDRAMC_DS			(3 << 10)	/* Drive Strength */65#define		AT91_SDRAMC_TIMEOUT		(3 << 12)	/* Time to define when Low Power Mode is enabled */66#define			AT91_SDRAMC_TIMEOUT_0_CLK_CYCLES	(0 << 12)67#define			AT91_SDRAMC_TIMEOUT_64_CLK_CYCLES	(1 << 12)68#define			AT91_SDRAMC_TIMEOUT_128_CLK_CYCLES	(2 << 12)69 70#define AT91_SDRAMC_IER		0x14	/* SDRAM Controller Interrupt Enable Register */71#define AT91_SDRAMC_IDR		0x18	/* SDRAM Controller Interrupt Disable Register */72#define AT91_SDRAMC_IMR		0x1C	/* SDRAM Controller Interrupt Mask Register */73#define AT91_SDRAMC_ISR		0x20	/* SDRAM Controller Interrupt Status Register */74#define		AT91_SDRAMC_RES		(1 << 0)		/* Refresh Error Status */75 76#define AT91_SDRAMC_MDR		0x24	/* SDRAM Memory Device Register */77#define		AT91_SDRAMC_MD		(3 << 0)		/* Memory Device Type */78#define			AT91_SDRAMC_MD_SDRAM		079#define			AT91_SDRAMC_MD_LOW_POWER_SDRAM	180 81#endif82