summaryrefslogtreecommitdiffstats
path: root/include/asm-arm/arch-at91rm9200/at91sam926x_mc.h
blob: 7d94968b5d5722f32bccacebea7c8921ab82f391 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
 * include/asm-arm/arch-at91rm9200/at91sam926x_mc.h
 *
 * Memory Controllers (SMC, SDRAMC) - System peripherals registers.
 * Based on AT91SAM9261 datasheet revision D.
 *
 * 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 AT91SAM926x_MC_H
#define AT91SAM926x_MC_H

/* SDRAM Controller (SDRAMC) registers */
#define AT91_SDRAMC_MR		(AT91_SDRAMC + 0x00)	/* SDRAM Controller Mode Register */
#define		AT91_SDRAMC_MODE	(0xf << 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		(AT91_SDRAMC + 0x04)	/* SDRAM Controller Refresh Timer Register */
#define		AT91_SDRAMC_COUNT	(0xfff << 0)		/* Refresh Timer Counter */

#define AT91_SDRAMC_CR		(AT91_SDRAMC + 0x08)	/* 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		(0xf <<  8)		/* Write Recovery Delay */
#define		AT91_SDRAMC_TRC		(0xf << 12)		/* Row Cycle Delay */
#define		AT91_SDRAMC_TRP		(0xf << 16)		/* Row Precharge Delay */
#define		AT91_SDRAMC_TRCD	(0xf << 20)		/* Row to Column Delay */
#define		AT91_SDRAMC_TRAS	(0xf << 24)		/* Active to Precharge Delay */
#define		AT91_SDRAMC_TXSR	(0xf << 28)		/* Exit Self Refresh to Active Delay */

#define AT91_SDRAMC_LPR		(AT91_SDRAMC + 0x10)	/* 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 Strenght */
#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		(AT91_SDRAMC + 0x14)	/* SDRAM Controller Interrupt Enable Register */
#define AT91_SDRAMC_IDR		(AT91_SDRAMC + 0x18)	/* SDRAM Controller Interrupt Disable Register */
#define AT91_SDRAMC_IMR		(AT91_SDRAMC + 0x1C)	/* SDRAM Controller Interrupt Mask Register */
#define AT91_SDRAMC_ISR		(AT91_SDRAMC + 0x20)	/* SDRAM Controller Interrupt Status Register */
#define		AT91_SDRAMC_RES		(1 << 0)		/* Refresh Error Status */

#define AT91_SDRAMC_MDR		(AT91_SDRAMC + 0x24)	/* 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


/* Static Memory Controller (SMC) registers */
#define AT91_SMC_SETUP(n)	(AT91_SMC + 0x00 + ((n)*0x10))	/* Setup Register for CS n */
#define		AT91_SMC_NWESETUP	(0x3f << 0)			/* NWE Setup Length */
#define			AT91_SMC_NWESETUP_(x)	((x) << 0)
#define		AT91_SMC_NCS_WRSETUP	(0x3f << 8)			/* NCS Setup Length in Write Access */
#define			AT91_SMC_NCS_WRSETUP_(x)	((x) << 8)
#define		AT91_SMC_NRDSETUP	(0x3f << 16)			/* NRD Setup Length */
#define			AT91_SMC_NRDSETUP_(x)	((x) << 16)
#define		AT91_SMC_NCS_RDSETUP	(0x3f << 24)			/* NCS Setup Length in Read Access */
#define			AT91_SMC_NCS_RDSETUP_(x)	((x) << 24)

#define AT91_SMC_PULSE(n)	(AT91_SMC + 0x04 + ((n)*0x10))	/* Pulse Register for CS n */
#define		AT91_SMC_NWEPULSE	(0x7f <<  0)			/* NWE Pulse Length */
#define			AT91_SMC_NWEPULSE_(x)	((x) << 0)
#define		AT91_SMC_NCS_WRPULSE	(0x7f <<  8)			/* NCS Pulse Length in Write Access */
#define			AT91_SMC_NCS_WRPULSE_(x)((x) << 8)
#define		AT91_SMC_NRDPULSE	(0x7f << 16)			/* NRD Pulse Length */
#define			AT91_SMC_NRDPULSE_(x)	((x) << 16)
#define		AT91_SMC_NCS_RDPULSE	(0x7f << 24)			/* NCS Pulse Length in Read Access */
#define			AT91_SMC_NCS_RDPULSE_(x)((x) << 24)

#define AT91_SMC_CYCLE(n)	(AT91_SMC + 0x08 + ((n)*0x10))	/* Cycle Register for CS n */
#define		AT91_SMC_NWECYCLE	(0x1ff << 0 )			/* Total Write Cycle Length */
#define			AT91_SMC_NWECYCLE_(x)	((x) << 0)
#define		AT91_SMC_NRDCYCLE	(0x1ff << 16)			/* Total Read Cycle Length */
#define			AT91_SMC_NRDCYCLE_(x)	((x) << 16)

#define AT91_SMC_MODE(n)	(AT91_SMC + 0x0c + ((n)*0x10))	/* Mode Register for CS n */
#define		AT91_SMC_READMODE	(1 <<  0)			/* Read Mode */
#define		AT91_SMC_WRITEMODE	(1 <<  1)			/* Write Mode */
#define		AT91_SMC_EXNWMODE	(3 <<  5)			/* NWAIT Mode */
#define			AT91_SMC_EXNWMODE_DISABLE	(0 << 5)
#define			AT91_SMC_EXNWMODE_FROZEN	(2 << 5)
#define			AT91_SMC_EXNWMODE_READY		(3 << 5)
#define		AT91_SMC_BAT		(1 <<  8)			/* Byte Access Type */
#define			AT91_SMC_BAT_SELECT		(0 << 8)
#define			AT91_SMC_BAT_WRITE		(1 << 8)
#define		AT91_SMC_DBW		(3 << 12)			/* Data Bus Width */
#define			AT91_SMC_DBW_8			(0 << 12)
#define			AT91_SMC_DBW_16			(1 << 12)
#define			AT91_SMC_DBW_32			(2 << 12)
#define		AT91_SMC_TDF		(0xf << 16)			/* Data Float Time. */
#define			AT91_SMC_TDF_(x)		((x) << 16)
#define		AT91_SMC_TDFMODE	(1 << 20)			/* TDF Optimization - Enabled */
#define		AT91_SMC_PMEN		(1 << 24)			/* Page Mode Enabled */
#define		AT91_SMC_PS		(3 << 28)			/* Page Size */
#define			AT91_SMC_PS_4			(0 << 28)
#define			AT91_SMC_PS_8			(1 << 28)
#define			AT91_SMC_PS_16			(2 << 28)
#define			AT91_SMC_PS_32			(3 << 28)

#endif
OpenPOWER on IntegriCloud