1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Header file for the Atmel DDR/SDR SDRAM Controller |
4 | * |
5 | * Copyright (C) 2010 Atmel Corporation |
6 | * Nicolas Ferre <nicolas.ferre@atmel.com> |
7 | */ |
8 | #ifndef AT91SAM9_DDRSDR_H |
9 | #define AT91SAM9_DDRSDR_H |
10 | |
11 | #define AT91_DDRSDRC_MR 0x00 /* Mode Register */ |
12 | #define AT91_DDRSDRC_MODE (0x7 << 0) /* Command Mode */ |
13 | #define AT91_DDRSDRC_MODE_NORMAL 0 |
14 | #define AT91_DDRSDRC_MODE_NOP 1 |
15 | #define AT91_DDRSDRC_MODE_PRECHARGE 2 |
16 | #define AT91_DDRSDRC_MODE_LMR 3 |
17 | #define AT91_DDRSDRC_MODE_REFRESH 4 |
18 | #define AT91_DDRSDRC_MODE_EXT_LMR 5 |
19 | #define AT91_DDRSDRC_MODE_DEEP 6 |
20 | |
21 | #define AT91_DDRSDRC_RTR 0x04 /* Refresh Timer Register */ |
22 | #define AT91_DDRSDRC_COUNT (0xfff << 0) /* Refresh Timer Counter */ |
23 | |
24 | #define AT91_DDRSDRC_CR 0x08 /* Configuration Register */ |
25 | #define AT91_DDRSDRC_NC (3 << 0) /* Number of Column Bits */ |
26 | #define AT91_DDRSDRC_NC_SDR8 (0 << 0) |
27 | #define AT91_DDRSDRC_NC_SDR9 (1 << 0) |
28 | #define AT91_DDRSDRC_NC_SDR10 (2 << 0) |
29 | #define AT91_DDRSDRC_NC_SDR11 (3 << 0) |
30 | #define AT91_DDRSDRC_NC_DDR9 (0 << 0) |
31 | #define AT91_DDRSDRC_NC_DDR10 (1 << 0) |
32 | #define AT91_DDRSDRC_NC_DDR11 (2 << 0) |
33 | #define AT91_DDRSDRC_NC_DDR12 (3 << 0) |
34 | #define AT91_DDRSDRC_NR (3 << 2) /* Number of Row Bits */ |
35 | #define AT91_DDRSDRC_NR_11 (0 << 2) |
36 | #define AT91_DDRSDRC_NR_12 (1 << 2) |
37 | #define AT91_DDRSDRC_NR_13 (2 << 2) |
38 | #define AT91_DDRSDRC_NR_14 (3 << 2) |
39 | #define AT91_DDRSDRC_CAS (7 << 4) /* CAS Latency */ |
40 | #define AT91_DDRSDRC_CAS_2 (2 << 4) |
41 | #define AT91_DDRSDRC_CAS_3 (3 << 4) |
42 | #define AT91_DDRSDRC_CAS_25 (6 << 4) |
43 | #define AT91_DDRSDRC_RST_DLL (1 << 7) /* Reset DLL */ |
44 | #define AT91_DDRSDRC_DICDS (1 << 8) /* Output impedance control */ |
45 | #define AT91_DDRSDRC_DIS_DLL (1 << 9) /* Disable DLL [SAM9 Only] */ |
46 | #define AT91_DDRSDRC_OCD (1 << 12) /* Off-Chip Driver [SAM9 Only] */ |
47 | #define AT91_DDRSDRC_DQMS (1 << 16) /* Mask Data is Shared [SAM9 Only] */ |
48 | #define AT91_DDRSDRC_ACTBST (1 << 18) /* Active Bank X to Burst Stop Read Access Bank Y [SAM9 Only] */ |
49 | |
50 | #define AT91_DDRSDRC_T0PR 0x0C /* Timing 0 Register */ |
51 | #define AT91_DDRSDRC_TRAS (0xf << 0) /* Active to Precharge delay */ |
52 | #define AT91_DDRSDRC_TRCD (0xf << 4) /* Row to Column delay */ |
53 | #define AT91_DDRSDRC_TWR (0xf << 8) /* Write recovery delay */ |
54 | #define AT91_DDRSDRC_TRC (0xf << 12) /* Row cycle delay */ |
55 | #define AT91_DDRSDRC_TRP (0xf << 16) /* Row precharge delay */ |
56 | #define AT91_DDRSDRC_TRRD (0xf << 20) /* Active BankA to BankB */ |
57 | #define AT91_DDRSDRC_TWTR (0x7 << 24) /* Internal Write to Read delay */ |
58 | #define AT91_DDRSDRC_RED_WRRD (0x1 << 27) /* Reduce Write to Read Delay [SAM9 Only] */ |
59 | #define AT91_DDRSDRC_TMRD (0xf << 28) /* Load mode to active/refresh delay */ |
60 | |
61 | #define AT91_DDRSDRC_T1PR 0x10 /* Timing 1 Register */ |
62 | #define AT91_DDRSDRC_TRFC (0x1f << 0) /* Row Cycle Delay */ |
63 | #define AT91_DDRSDRC_TXSNR (0xff << 8) /* Exit self-refresh to non-read */ |
64 | #define AT91_DDRSDRC_TXSRD (0xff << 16) /* Exit self-refresh to read */ |
65 | #define AT91_DDRSDRC_TXP (0xf << 24) /* Exit power-down delay */ |
66 | |
67 | #define AT91_DDRSDRC_T2PR 0x14 /* Timing 2 Register [SAM9 Only] */ |
68 | #define AT91_DDRSDRC_TXARD (0xf << 0) /* Exit active power down delay to read command in mode "Fast Exit" */ |
69 | #define AT91_DDRSDRC_TXARDS (0xf << 4) /* Exit active power down delay to read command in mode "Slow Exit" */ |
70 | #define AT91_DDRSDRC_TRPA (0xf << 8) /* Row Precharge All delay */ |
71 | #define AT91_DDRSDRC_TRTP (0x7 << 12) /* Read to Precharge delay */ |
72 | |
73 | #define AT91_DDRSDRC_LPR 0x1C /* Low Power Register */ |
74 | #define AT91_DDRSDRC_LPCB (3 << 0) /* Low-power Configurations */ |
75 | #define AT91_DDRSDRC_LPCB_DISABLE 0 |
76 | #define AT91_DDRSDRC_LPCB_SELF_REFRESH 1 |
77 | #define AT91_DDRSDRC_LPCB_POWER_DOWN 2 |
78 | #define AT91_DDRSDRC_LPCB_DEEP_POWER_DOWN 3 |
79 | #define AT91_DDRSDRC_CLKFR (1 << 2) /* Clock Frozen */ |
80 | #define AT91_DDRSDRC_LPDDR2_PWOFF (1 << 3) /* LPDDR Power Off */ |
81 | #define AT91_DDRSDRC_PASR (7 << 4) /* Partial Array Self Refresh */ |
82 | #define AT91_DDRSDRC_TCSR (3 << 8) /* Temperature Compensated Self Refresh */ |
83 | #define AT91_DDRSDRC_DS (3 << 10) /* Drive Strength */ |
84 | #define AT91_DDRSDRC_TIMEOUT (3 << 12) /* Time to define when Low Power Mode is enabled */ |
85 | #define AT91_DDRSDRC_TIMEOUT_0_CLK_CYCLES (0 << 12) |
86 | #define AT91_DDRSDRC_TIMEOUT_64_CLK_CYCLES (1 << 12) |
87 | #define AT91_DDRSDRC_TIMEOUT_128_CLK_CYCLES (2 << 12) |
88 | #define AT91_DDRSDRC_APDE (1 << 16) /* Active power down exit time */ |
89 | #define AT91_DDRSDRC_UPD_MR (3 << 20) /* Update load mode register and extended mode register */ |
90 | |
91 | #define AT91_DDRSDRC_MDR 0x20 /* Memory Device Register */ |
92 | #define AT91_DDRSDRC_MD (7 << 0) /* Memory Device Type */ |
93 | #define AT91_DDRSDRC_MD_SDR 0 |
94 | #define AT91_DDRSDRC_MD_LOW_POWER_SDR 1 |
95 | #define AT91_DDRSDRC_MD_LOW_POWER_DDR 3 |
96 | #define AT91_DDRSDRC_MD_LPDDR3 5 |
97 | #define AT91_DDRSDRC_MD_DDR2 6 /* [SAM9 Only] */ |
98 | #define AT91_DDRSDRC_MD_LPDDR2 7 |
99 | #define AT91_DDRSDRC_DBW (1 << 4) /* Data Bus Width */ |
100 | #define AT91_DDRSDRC_DBW_32BITS (0 << 4) |
101 | #define AT91_DDRSDRC_DBW_16BITS (1 << 4) |
102 | |
103 | #define AT91_DDRSDRC_DLL 0x24 /* DLL Information Register */ |
104 | #define AT91_DDRSDRC_MDINC (1 << 0) /* Master Delay increment */ |
105 | #define AT91_DDRSDRC_MDDEC (1 << 1) /* Master Delay decrement */ |
106 | #define AT91_DDRSDRC_MDOVF (1 << 2) /* Master Delay Overflow */ |
107 | #define AT91_DDRSDRC_MDVAL (0xff << 8) /* Master Delay value */ |
108 | |
109 | #define AT91_DDRSDRC_HS 0x2C /* High Speed Register [SAM9 Only] */ |
110 | #define AT91_DDRSDRC_DIS_ATCP_RD (1 << 2) /* Anticip read access is disabled */ |
111 | |
112 | #define AT91_DDRSDRC_DELAY(n) (0x30 + (0x4 * (n))) /* Delay I/O Register n */ |
113 | |
114 | #define AT91_DDRSDRC_WPMR 0xE4 /* Write Protect Mode Register [SAM9 Only] */ |
115 | #define AT91_DDRSDRC_WP (1 << 0) /* Write protect enable */ |
116 | #define AT91_DDRSDRC_WPKEY (0xffffff << 8) /* Write protect key */ |
117 | #define AT91_DDRSDRC_KEY (0x444452 << 8) /* Write protect key = "DDR" */ |
118 | |
119 | #define AT91_DDRSDRC_WPSR 0xE8 /* Write Protect Status Register [SAM9 Only] */ |
120 | #define AT91_DDRSDRC_WPVS (1 << 0) /* Write protect violation status */ |
121 | #define AT91_DDRSDRC_WPVSRC (0xffff << 8) /* Write protect violation source */ |
122 | |
123 | #endif |
124 | |