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Minor Coding Style Cleanup.

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Signed-off-by: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Wolfgang Denk 2011-02-02 22:36:10 +01:00
parent be9db564de
commit d1a24f0618
8 changed files with 68 additions and 69 deletions
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84
doc/README.fsl-ddr
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@ -2,25 +2,25 @@
Table of interleaving modes supported in cpu/8xxx/ddr/
======================================================
+-------------+---------------------------------------------------------+
| | Rank Interleaving |
| +--------+-----------+-----------+------------+-----------+
|Memory | | | | 2x2 | 4x1 |
|Controller | None | 2x1 lower | 2x1 upper | {CS0+CS1}, | {CS0+CS1+ |
|Interleaving | | {CS0+CS1} | {CS2+CS3} | {CS2+CS3} | CS2+CS3} |
| | Rank Interleaving |
| +--------+-----------+-----------+------------+-----------+
|Memory | | | | 2x2 | 4x1 |
|Controller | None | 2x1 lower | 2x1 upper | {CS0+CS1}, | {CS0+CS1+ |
|Interleaving | | {CS0+CS1} | {CS2+CS3} | {CS2+CS3} | CS2+CS3} |
+-------------+--------+-----------+-----------+------------+-----------+
|None | Yes | Yes | Yes | Yes | Yes |
|None | Yes | Yes | Yes | Yes | Yes |
+-------------+--------+-----------+-----------+------------+-----------+
|Cacheline | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
|Cacheline | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
+-------------+--------+-----------+-----------+------------+-----------+
|Page | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
|Page | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
+-------------+--------+-----------+-----------+------------+-----------+
|Bank | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
|Bank | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
+-------------+--------+-----------+-----------+------------+-----------+
|Superbank | No | Yes | No | No, Only(*)| Yes |
| | | | | {CS0+CS1} | |
|Superbank | No | Yes | No | No, Only(*)| Yes |
| | | | | {CS0+CS1} | |
+-------------+--------+-----------+-----------+------------+-----------+
(*) Although the hardware can be configured with memory controller
interleaving using "2x2" rank interleaving, it only interleaves {CS0+CS1}
@ -116,57 +116,57 @@ in Ohms.
Two slots system
+-----------------------+----------+---------------+-----------------------------+-----------------------------+
| Configuration | |DRAM controller| Slot 1 | Slot 2 |
| Configuration | |DRAM controller| Slot 1 | Slot 2 |
+-----------+-----------+----------+-------+-------+--------------+--------------+--------------+--------------+
| | | | | | Rank 1 | Rank 2 | Rank 1 | Rank 2 |
+ Slot 1 | Slot 2 |Write/Read| Write | Read |-------+------+-------+------+-------+------+-------+------+
| | | | | | Write | Read | Write | Read | Write | Read | Write | Read |
| | | | | | Rank 1 | Rank 2 | Rank 1 | Rank 2 |
+ Slot 1 | Slot 2 |Write/Read| Write | Read |-------+------+-------+------+-------+------+-------+------+
| | | | | | Write | Read | Write | Read | Write | Read | Write | Read |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 75 | 120 | off | off | off | off | off | 30 | 30 |
| | | Slot 1 | off | 75 | 120 | off | off | off | off | off | 30 | 30 |
| Dual Rank | Dual Rank |----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 75 | off | off | 30 | 30 | 120 | off | off | off |
| | | Slot 2 | off | 75 | off | off | 30 | 30 | 120 | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 75 | 120 | off | off | off | 20 | 20 | | |
| | | Slot 1 | off | 75 | 120 | off | off | off | 20 | 20 | | |
| Dual Rank |Single Rank|----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 75 | off | off | 20 | 20 | 120 *| off | | |
| | | Slot 2 | off | 75 | off | off | 20 | 20 | 120 *| off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 75 | 120 *| off | | | off | off | 20 | 20 |
| | | Slot 1 | off | 75 | 120 *| off | | | off | off | 20 | 20 |
|Single Rank| Dual Rank |----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 75 | 20 | 20 | | | 120 | off | off | off |
| | | Slot 2 | off | 75 | 20 | 20 | | | 120 | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 75 | 120 *| off | | | 30 | 30 | | |
| | | Slot 1 | off | 75 | 120 *| off | | | 30 | 30 | | |
|Single Rank|Single Rank|----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 75 | 30 | 30 | | | 120 *| off | | |
| | | Slot 2 | off | 75 | 30 | 30 | | | 120 *| off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Dual Rank | Empty | Slot 1 | off | 75 | 40 | off | off | off | | | | |
| Dual Rank | Empty | Slot 1 | off | 75 | 40 | off | off | off | | | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Empty | Dual Rank | Slot 2 | off | 75 | | | | | 40 | off | off | off |
| Empty | Dual Rank | Slot 2 | off | 75 | | | | | 40 | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
|Single Rank| Empty | Slot 1 | off | 75 | 40 | off | | | | | | |
|Single Rank| Empty | Slot 1 | off | 75 | 40 | off | | | | | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Empty |Single Rank| Slot 2 | off | 75 | | | | | 40 | off | | |
| Empty |Single Rank| Slot 2 | off | 75 | | | | | 40 | off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
Single slot system
+-------------+------------+---------------+-----------------------------+-----------------------------+
| | |DRAM controller| Rank 1 | Rank 2 | Rank 3 | Rank 4 |
| | |DRAM controller| Rank 1 | Rank 2 | Rank 3 | Rank 4 |
|Configuration| Write/Read |-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Write | Read | Write | Read | Write | Read | Write | Read | Write | Read |
| | | Write | Read | Write | Read | Write | Read | Write | Read | Write | Read |
+-------------+------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R1 | off | 75 | 120 *| off | off | off | 20 | 20 | off | off |
| |------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R2 | off | 75 | off | 20 | 120 | off | 20 | 20 | off | off |
| | R1 | off | 75 | 120 *| off | off | off | 20 | 20 | off | off |
| |------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R2 | off | 75 | off | 20 | 120 | off | 20 | 20 | off | off |
| Quad Rank |------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R3 | off | 75 | 20 | 20 | off | off | 120 *| off | off | off |
| |------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R4 | off | 75 | 20 | 20 | off | off | off | 20 | 120 | off |
| | R3 | off | 75 | 20 | 20 | off | off | 120 *| off | off | off |
| |------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R4 | off | 75 | 20 | 20 | off | off | off | 20 | 120 | off |
+-------------+------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R1 | off | 75 | 40 | off | off | off |
| | R1 | off | 75 | 40 | off | off | off |
| Dual Rank |------------+-------+-------+-------+------+-------+------+
| | R2 | off | 75 | 40 | off | off | off |
| | R2 | off | 75 | 40 | off | off | off |
+-------------+------------+-------+-------+-------+------+-------+------+
| Single Rank | R1 | off | 75 | 40 | off |
| Single Rank | R1 | off | 75 | 40 | off |
+-------------+------------+-------+-------+-------+------+
Reference http://www.xrosstalkmag.com/mag_issues/xrosstalk_oct08_final.pdf
http://download.micron.com/pdf/technotes/ddr3/tn4108_ddr3_design_guide.pdf
http://download.micron.com/pdf/technotes/ddr3/tn4108_ddr3_design_guide.pdf