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325 bytes added ,  23:18, 27 May 2020
→‎CFG9_SDMMCCTL: ARM11 SD card access hype.
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== CFG9_SDMMCCTL ==
 
== CFG9_SDMMCCTL ==
CFG9_SDMMCCTL controls power. Also controls SD card detect?
+
This register controls power of multiple ports/controllers and allows to map controller 3 to ARM9 or ARM11. The SD card can be accessed on ARM11 by clearing bit 8 and 9.
    
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
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|-
 
|-
 
| 0
 
| 0
| SD slot power.
+
| Controller 1/3 port 0 power (SD card) (1=off)
 
| Process9
 
| Process9
 
|-
 
|-
 
| 1
 
| 1
| eMMC power? NAND init hangs if set.
+
| Controller 1 port 1 power (eMMC) (1=off)
 
| Process9
 
| Process9
 
|-
 
|-
 +
| 2
 +
| Controller 2 port 0 power (WiFi SDIO) (1=off)
 +
| Process9
 +
|-
 +
| 3
 +
| Controller 3 port 1 power? Set at cold boot.
 +
| -
 
|-
 
|-
| 2-3
+
| 4-5
| Other power supplies?
+
| Unused.
| Process9
+
| -
 
|-
 
|-
 
| 6
 
| 6
| Never used by anything. Set at cold boot.
+
| Wifi port related? Pull up? Set at cold boot.
|
+
| -
 
|-
 
|-
 
| 8
 
| 8
| ? This bit seems to do nothing.
+
| Controller 3 mapping (0=ARM9 0x10007000, 1=ARM11 0x10100000)
 
| Process9
 
| Process9
 
|-
 
|-
 
| 9
 
| 9
| If not set force pulls all SD card lines high.
+
| SD card controller select (0=0x10007000/0x10100000, 1=0x10006000)
 
| Process9
 
| Process9
 +
|-
 +
| 10-15
 +
| Unused.
 +
| -
 
|}
 
|}
  
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