Title: [6576] trunk/drivers/usb/musb/blackfin.h: task[#2424]add the anomalies notes
- Revision
- 6576
- Author
- cliff
- Date
- 2009-06-04 02:44:42 -0500 (Thu, 04 Jun 2009)
Log Message
task[#2424]add the anomalies notes
Modified Paths
Diff
Modified: trunk/drivers/usb/musb/blackfin.h (6575 => 6576)
--- trunk/drivers/usb/musb/blackfin.h 2009-06-04 07:43:38 UTC (rev 6575)
+++ trunk/drivers/usb/musb/blackfin.h 2009-06-04 07:44:42 UTC (rev 6576)
@@ -14,12 +14,32 @@
* Blackfin specific definitions
*/
-/*
- * Anomaly notes:
- * 05000450 - USB DMA Mode 1 Short Packet Data Corruption:
- * MUSB driver is designed to transfer buffer of N * maxpacket size
- * in DMA mode 1 and leave rest data to the next transfer in DMA
- * mode 0, so we never transmit a short packet in DMA mode 1.
+/* Anomalies notes:
+ *
+ * 05000450 - MUSB driver is designed to transfer buffer of N*maxpacket size
+ * in DMA mode 1 and leave rest data to the next transfer in DMA
+ * mode 0.
+ *
+ * 05000463 - This anomaly doesn't affect this driver,Since it
+ * never uses L1 or L2 memory as data destination.
+ *
+ * 05000464 - This anomaly doesn't affect this driver,Since it
+ * never uses L1 or L2 memory as data source.
+ *
+ * 05000465 - Actually,the anomaly still can be seen when SCLK
+ * is over 100 MHz,and there is no way to workaround
+ * for bulk endpoints,because the wMaxPackSize of bulk
+ * is less than or equal to 512,while the fifo size of
+ * endpoint 5,6,7 is 1024,the double buffer mode is
+ * enabled automatically when these endpoints are used
+ * for bulk OUT.
+ *
+ * 05000466 - This anomaly doesn't affect this driver,Since it
+ * never mixs concurrent DMA and core accesses to the
+ * TX endpoint FIFOs.
+ *
+ * 05000467 - The workaround for this anomaly will introduce another
+ * anomaly - 05000465.
*/
#undef DUMP_FIFO_DATA
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