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ARM Chumby: Add list of available GPIOs and their meaning 

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Juergen Beisert 2010-12-21 12:25:21 +01:00 committed by Sascha Hauer
parent 5f10852e76
commit 31a43f8e23
1 changed files with 85 additions and 0 deletions
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arch/arm/boards/chumby_falconwing/falconwing.c
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@ -390,4 +390,89 @@ make ARCH=arm CROSS_COMPILE=armv5compiler
partition or you can do it in the classic way: mkfs on it, mount it and copy
all required data and programs into it.
@section gpio_falconwing Available GPIOs
The Falconwing uses some GPIOs to control various features. With the regular
GPIO commands these features can be controlled at @a barebox's runtime.
<table width="100%" border="1" cellspacing="1" cellpadding="3">
<tr>
<td>No</td>
<td>Direction</td>
<td>Function</td>
<td>Reset</td>
<td>Set</td>
</tr>
<tr>
<td>8</td>
<td>Output</td>
<td>Switch Audio Amplifier</td>
<td>Off</td>
<td>On</td>
</tr>
<tr>
<td>11</td>
<td>Input</td>
<td>Head Phone Detection</td>
<td>TBD</td>
<td>TBD</td>
</tr>
<tr>
<td>14</td>
<td>Input</td>
<td>Unused (J113)</td>
<td>User</td>
<td>User</td>
</tr>
<tr>
<td>15</td>
<td>Input</td>
<td>Unused (J114)</td>
<td>User</td>
<td>User</td>
</tr>
<tr>
<td>26</td>
<td>Output</td>
<td>USB Power</td>
<td>TBD</td>
<td>TBD</td>
</tr>
<tr>
<td>27</td>
<td>Input</td>
<td>Display Connected</td>
<td>Display<br>Attached</td>
<td>Display<br>Disconnected</td>
</tr>
<tr>
<td>29</td>
<td>Output</td>
<td>USB HUB Reset</td>
<td>TBD</td>
<td>TBD</td>
</tr>
<tr>
<td>50</td>
<td>Output</td>
<td>Display Reset</td>
<td>Display<br>Reset</td>
<td>Display<br>Running</td>
</tr>
<tr>
<td>60</td>
<td>Output</td>
<td>Display Backlight</td>
<td>Backlight<br>Off</td>
<td>Backlight<br>On (100 %)</td>
</tr>
<tr>
<td>62</td>
<td>Input</td>
<td>Bend</td>
<td>Not pressed</td>
<td>Pressed</td>
</tr>
</table>
*/