diff options
author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-08-05 11:14:15 -0400 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-08-07 04:55:48 -0400 |
commit | a09e64fbc0094e3073dbb09c3b4bfe4ab669244b (patch) | |
tree | 69689f467179891b498bd7423fcf61925173db31 /arch/arm/plat-omap/include/mach/sdrc.h | |
parent | a1b81a84fff05dbfef45b7012c26e1fee9973e5d (diff) |
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-omap/include/mach/sdrc.h')
-rw-r--r-- | arch/arm/plat-omap/include/mach/sdrc.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/mach/sdrc.h b/arch/arm/plat-omap/include/mach/sdrc.h new file mode 100644 index 000000000000..787b7acec546 --- /dev/null +++ b/arch/arm/plat-omap/include/mach/sdrc.h | |||
@@ -0,0 +1,75 @@ | |||
1 | #ifndef ____ASM_ARCH_SDRC_H | ||
2 | #define ____ASM_ARCH_SDRC_H | ||
3 | |||
4 | /* | ||
5 | * OMAP2/3 SDRC/SMS register definitions | ||
6 | * | ||
7 | * Copyright (C) 2007 Texas Instruments, Inc. | ||
8 | * Copyright (C) 2007 Nokia Corporation | ||
9 | * | ||
10 | * Written by Paul Walmsley | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or modify | ||
13 | * it under the terms of the GNU General Public License version 2 as | ||
14 | * published by the Free Software Foundation. | ||
15 | */ | ||
16 | |||
17 | #include <mach/io.h> | ||
18 | |||
19 | /* SDRC register offsets - read/write with sdrc_{read,write}_reg() */ | ||
20 | |||
21 | #define SDRC_SYSCONFIG 0x010 | ||
22 | #define SDRC_DLLA_CTRL 0x060 | ||
23 | #define SDRC_DLLA_STATUS 0x064 | ||
24 | #define SDRC_DLLB_CTRL 0x068 | ||
25 | #define SDRC_DLLB_STATUS 0x06C | ||
26 | #define SDRC_POWER 0x070 | ||
27 | #define SDRC_MR_0 0x084 | ||
28 | #define SDRC_RFR_CTRL_0 0x0a4 | ||
29 | |||
30 | /* | ||
31 | * These values represent the number of memory clock cycles between | ||
32 | * autorefresh initiation. They assume 1 refresh per 64 ms (JEDEC), 8192 | ||
33 | * rows per device, and include a subtraction of a 50 cycle window in the | ||
34 | * event that the autorefresh command is delayed due to other SDRC activity. | ||
35 | * The '| 1' sets the ARE field to send one autorefresh when the autorefresh | ||
36 | * counter reaches 0. | ||
37 | * | ||
38 | * These represent optimal values for common parts, it won't work for all. | ||
39 | * As long as you scale down, most parameters are still work, they just | ||
40 | * become sub-optimal. The RFR value goes in the opposite direction. If you | ||
41 | * don't adjust it down as your clock period increases the refresh interval | ||
42 | * will not be met. Setting all parameters for complete worst case may work, | ||
43 | * but may cut memory performance by 2x. Due to errata the DLLs need to be | ||
44 | * unlocked and their value needs run time calibration. A dynamic call is | ||
45 | * need for that as no single right value exists acorss production samples. | ||
46 | * | ||
47 | * Only the FULL speed values are given. Current code is such that rate | ||
48 | * changes must be made at DPLLoutx2. The actual value adjustment for low | ||
49 | * frequency operation will be handled by omap_set_performance() | ||
50 | * | ||
51 | * By having the boot loader boot up in the fastest L4 speed available likely | ||
52 | * will result in something which you can switch between. | ||
53 | */ | ||
54 | #define SDRC_RFR_CTRL_165MHz (0x00044c00 | 1) | ||
55 | #define SDRC_RFR_CTRL_133MHz (0x0003de00 | 1) | ||
56 | #define SDRC_RFR_CTRL_100MHz (0x0002da01 | 1) | ||
57 | #define SDRC_RFR_CTRL_110MHz (0x0002da01 | 1) /* Need to calc */ | ||
58 | #define SDRC_RFR_CTRL_BYPASS (0x00005000 | 1) /* Need to calc */ | ||
59 | |||
60 | |||
61 | /* | ||
62 | * SMS register access | ||
63 | */ | ||
64 | |||
65 | |||
66 | #define OMAP242X_SMS_REGADDR(reg) (void __iomem *)IO_ADDRESS(OMAP2420_SMS_BASE + reg) | ||
67 | #define OMAP243X_SMS_REGADDR(reg) (void __iomem *)IO_ADDRESS(OMAP243X_SMS_BASE + reg) | ||
68 | #define OMAP343X_SMS_REGADDR(reg) (void __iomem *)IO_ADDRESS(OMAP343X_SMS_BASE + reg) | ||
69 | |||
70 | /* SMS register offsets - read/write with sms_{read,write}_reg() */ | ||
71 | |||
72 | #define SMS_SYSCONFIG 0x010 | ||
73 | /* REVISIT: fill in other SMS registers here */ | ||
74 | |||
75 | #endif | ||