Update of /cvsroot/blob/blob/include/blob/arch
In directory usw-pr-cvs1:/tmp/cvs-serv19527
Modified Files:
shannon.h
Log Message:
added led diag gpio and instructions for shannon
Index: shannon.h
===================================================================
RCS file: /cvsroot/blob/blob/include/blob/arch/shannon.h,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -d -r1.6 -r1.7
--- shannon.h 15 Jan 2002 01:59:34 -0000 1.6
+++ shannon.h 26 Feb 2002 08:39:57 -0000 1.7
@@ -39,9 +39,37 @@
/* GPIO for the LED */
-#define LED_GPIO (0x00000000) /* safe mode: no GPIO, no LED */
-
+#define LED_GPIO (0x00040000) /* GPIO 18, codec (ucb1300) reset */
+/* to connect this up, you'll need an LED and a resistor (100ohm - 1k will probably do)
+ *
+ * o o o =\ =o o o o o o ___________ \
+ * 33| | \ \ |//| | | 1////-33 \ \ \ |/--\o
+ * --+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-- |||| --+-+-+-+-+-+-+
+ * | : : : : : : : : : : : : : : : : : | |||| | : : : : : : :
+ * --+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-- |||| --+-+-+-+-+-+-+
+ * <-- front 34o o o o o|o o J601 o|||||||| o 2|||| 34o J600o|o|o|o back -->
+ * | / /\ /\o|o|o|o| |||| | | | |
+ * || ||
+ * || ||
+ * GPIO18 GND
+ *
+ * This is supposed to be ascii art of the daughter board rotated 90 degrees clockwise.
+ * An LED and resistor should be connected between the two vias indicated by GPIO18 and
+ * GND. These vias are on either side of the J601 silk label. The circuit should be connected
+ * as shown below (other interpretations sholud work as well).
+ *
+ *
+ * |\ |
+ * GPIO18 o---/\/\/\---| >|---------o GND
+ * |/ |
+ *
+ * R1 D1
+ *
+ *
+ * A little excessive description maybe, but I don't want anyone blowing up their tux :)
+ *
+ */
/* Shannon memory layout is a bit precious because we want to be able
* to load blob at the correct location for both 8 and 32MB
* SODIMMs. We assume that the following amount of memory is at least
|
