2 * include/asm-arm/arch-at91rm9200/at91sam926x_mc.h
4 * Memory Controllers (SMC, SDRAMC) - System peripherals registers.
5 * Based on AT91SAM9261 datasheet revision D.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
13 #ifndef AT91SAM926x_MC_H
14 #define AT91SAM926x_MC_H
16 /* SDRAM Controller (SDRAMC) registers */
17 #define AT91_SDRAMC_MR (AT91_SDRAMC + 0x00) /* SDRAM Controller Mode Register */
18 #define AT91_SDRAMC_MODE (0xf << 0) /* Command Mode */
19 #define AT91_SDRAMC_MODE_NORMAL 0
20 #define AT91_SDRAMC_MODE_NOP 1
21 #define AT91_SDRAMC_MODE_PRECHARGE 2
22 #define AT91_SDRAMC_MODE_LMR 3
23 #define AT91_SDRAMC_MODE_REFRESH 4
24 #define AT91_SDRAMC_MODE_EXT_LMR 5
25 #define AT91_SDRAMC_MODE_DEEP 6
27 #define AT91_SDRAMC_TR (AT91_SDRAMC + 0x04) /* SDRAM Controller Refresh Timer Register */
28 #define AT91_SDRAMC_COUNT (0xfff << 0) /* Refresh Timer Counter */
30 #define AT91_SDRAMC_CR (AT91_SDRAMC + 0x08) /* SDRAM Controller Configuration Register */
31 #define AT91_SDRAMC_NC (3 << 0) /* Number of Column Bits */
32 #define AT91_SDRAMC_NC_8 (0 << 0)
33 #define AT91_SDRAMC_NC_9 (1 << 0)
34 #define AT91_SDRAMC_NC_10 (2 << 0)
35 #define AT91_SDRAMC_NC_11 (3 << 0)
36 #define AT91_SDRAMC_NR (3 << 2) /* Number of Row Bits */
37 #define AT91_SDRAMC_NR_11 (0 << 2)
38 #define AT91_SDRAMC_NR_12 (1 << 2)
39 #define AT91_SDRAMC_NR_13 (2 << 2)
40 #define AT91_SDRAMC_NB (1 << 4) /* Number of Banks */
41 #define AT91_SDRAMC_NB_2 (0 << 4)
42 #define AT91_SDRAMC_NB_4 (1 << 4)
43 #define AT91_SDRAMC_CAS (3 << 5) /* CAS Latency */
44 #define AT91_SDRAMC_CAS_1 (1 << 5)
45 #define AT91_SDRAMC_CAS_2 (2 << 5)
46 #define AT91_SDRAMC_CAS_3 (3 << 5)
47 #define AT91_SDRAMC_DBW (1 << 7) /* Data Bus Width */
48 #define AT91_SDRAMC_DBW_32 (0 << 7)
49 #define AT91_SDRAMC_DBW_16 (1 << 7)
50 #define AT91_SDRAMC_TWR (0xf << 8) /* Write Recovery Delay */
51 #define AT91_SDRAMC_TRC (0xf << 12) /* Row Cycle Delay */
52 #define AT91_SDRAMC_TRP (0xf << 16) /* Row Precharge Delay */
53 #define AT91_SDRAMC_TRCD (0xf << 20) /* Row to Column Delay */
54 #define AT91_SDRAMC_TRAS (0xf << 24) /* Active to Precharge Delay */
55 #define AT91_SDRAMC_TXSR (0xf << 28) /* Exit Self Refresh to Active Delay */
57 #define AT91_SDRAMC_LPR (AT91_SDRAMC + 0x10) /* SDRAM Controller Low Power Register */
58 #define AT91_SDRAMC_LPCB (3 << 0) /* Low-power Configurations */
59 #define AT91_SDRAMC_LPCB_DISABLE 0
60 #define AT91_SDRAMC_LPCB_SELF_REFRESH 1
61 #define AT91_SDRAMC_LPCB_POWER_DOWN 2
62 #define AT91_SDRAMC_LPCB_DEEP_POWER_DOWN 3
63 #define AT91_SDRAMC_PASR (7 << 4) /* Partial Array Self Refresh */
64 #define AT91_SDRAMC_TCSR (3 << 8) /* Temperature Compensated Self Refresh */
65 #define AT91_SDRAMC_DS (3 << 10) /* Drive Strenght */
66 #define AT91_SDRAMC_TIMEOUT (3 << 12) /* Time to define when Low Power Mode is enabled */
67 #define AT91_SDRAMC_TIMEOUT_0_CLK_CYCLES (0 << 12)
68 #define AT91_SDRAMC_TIMEOUT_64_CLK_CYCLES (1 << 12)
69 #define AT91_SDRAMC_TIMEOUT_128_CLK_CYCLES (2 << 12)
71 #define AT91_SDRAMC_IER (AT91_SDRAMC + 0x14) /* SDRAM Controller Interrupt Enable Register */
72 #define AT91_SDRAMC_IDR (AT91_SDRAMC + 0x18) /* SDRAM Controller Interrupt Disable Register */
73 #define AT91_SDRAMC_IMR (AT91_SDRAMC + 0x1C) /* SDRAM Controller Interrupt Mask Register */
74 #define AT91_SDRAMC_ISR (AT91_SDRAMC + 0x20) /* SDRAM Controller Interrupt Status Register */
75 #define AT91_SDRAMC_RES (1 << 0) /* Refresh Error Status */
77 #define AT91_SDRAMC_MDR (AT91_SDRAMC + 0x24) /* SDRAM Memory Device Register */
78 #define AT91_SDRAMC_MD (3 << 0) /* Memory Device Type */
79 #define AT91_SDRAMC_MD_SDRAM 0
80 #define AT91_SDRAMC_MD_LOW_POWER_SDRAM 1
83 /* Static Memory Controller (SMC) registers */
84 #define AT91_SMC_SETUP(n) (AT91_SMC + 0x00 + ((n)*0x10)) /* Setup Register for CS n */
85 #define AT91_SMC_NWESETUP (0x3f << 0) /* NWE Setup Length */
86 #define AT91_SMC_NWESETUP_(x) ((x) << 0)
87 #define AT91_SMC_NCS_WRSETUP (0x3f << 8) /* NCS Setup Length in Write Access */
88 #define AT91_SMC_NCS_WRSETUP_(x) ((x) << 8)
89 #define AT91_SMC_NRDSETUP (0x3f << 16) /* NRD Setup Length */
90 #define AT91_SMC_NRDSETUP_(x) ((x) << 16)
91 #define AT91_SMC_NCS_RDSETUP (0x3f << 24) /* NCS Setup Length in Read Access */
92 #define AT91_SMC_NCS_RDSETUP_(x) ((x) << 24)
94 #define AT91_SMC_PULSE(n) (AT91_SMC + 0x04 + ((n)*0x10)) /* Pulse Register for CS n */
95 #define AT91_SMC_NWEPULSE (0x7f << 0) /* NWE Pulse Length */
96 #define AT91_SMC_NWEPULSE_(x) ((x) << 0)
97 #define AT91_SMC_NCS_WRPULSE (0x7f << 8) /* NCS Pulse Length in Write Access */
98 #define AT91_SMC_NCS_WRPULSE_(x)((x) << 8)
99 #define AT91_SMC_NRDPULSE (0x7f << 16) /* NRD Pulse Length */
100 #define AT91_SMC_NRDPULSE_(x) ((x) << 16)
101 #define AT91_SMC_NCS_RDPULSE (0x7f << 24) /* NCS Pulse Length in Read Access */
102 #define AT91_SMC_NCS_RDPULSE_(x)((x) << 24)
104 #define AT91_SMC_CYCLE(n) (AT91_SMC + 0x08 + ((n)*0x10)) /* Cycle Register for CS n */
105 #define AT91_SMC_NWECYCLE (0x1ff << 0 ) /* Total Write Cycle Length */
106 #define AT91_SMC_NWECYCLE_(x) ((x) << 0)
107 #define AT91_SMC_NRDCYCLE (0x1ff << 16) /* Total Read Cycle Length */
108 #define AT91_SMC_NRDCYCLE_(x) ((x) << 16)
110 #define AT91_SMC_MODE(n) (AT91_SMC + 0x0c + ((n)*0x10)) /* Mode Register for CS n */
111 #define AT91_SMC_READMODE (1 << 0) /* Read Mode */
112 #define AT91_SMC_WRITEMODE (1 << 1) /* Write Mode */
113 #define AT91_SMC_EXNWMODE (3 << 4) /* NWAIT Mode */
114 #define AT91_SMC_EXNWMODE_DISABLE (0 << 4)
115 #define AT91_SMC_EXNWMODE_FROZEN (2 << 4)
116 #define AT91_SMC_EXNWMODE_READY (3 << 4)
117 #define AT91_SMC_BAT (1 << 8) /* Byte Access Type */
118 #define AT91_SMC_BAT_SELECT (0 << 8)
119 #define AT91_SMC_BAT_WRITE (1 << 8)
120 #define AT91_SMC_DBW (3 << 12) /* Data Bus Width */
121 #define AT91_SMC_DBW_8 (0 << 12)
122 #define AT91_SMC_DBW_16 (1 << 12)
123 #define AT91_SMC_DBW_32 (2 << 12)
124 #define AT91_SMC_TDF (0xf << 16) /* Data Float Time. */
125 #define AT91_SMC_TDF_(x) ((x) << 16)
126 #define AT91_SMC_TDFMODE (1 << 20) /* TDF Optimization - Enabled */
127 #define AT91_SMC_PMEN (1 << 24) /* Page Mode Enabled */
128 #define AT91_SMC_PS (3 << 28) /* Page Size */
129 #define AT91_SMC_PS_4 (0 << 28)
130 #define AT91_SMC_PS_8 (1 << 28)
131 #define AT91_SMC_PS_16 (2 << 28)
132 #define AT91_SMC_PS_32 (3 << 28)