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Update README

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Gregory Nutt
2015-08-21 12:32:34 -06:00
parent c0881c36a3
commit 435277ed3a
1 changed files with 6 additions and 12 deletions
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configs/samv71-xult/README.txt
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@@ -110,19 +110,12 @@ for additional issues specific to a particular configuration.
Setting write through mode eliminates the need for cleaning the D-Cache. Setting write through mode eliminates the need for cleaning the D-Cache.
If only reloading and invalidating are done, then there is no problem. If only reloading and invalidating are done, then there is no problem.
5. The USBHS device controller driver (DCD) is complete but non-functional. 5. The USBHS device controller driver (DCD) is also fully functional. It
At this point, work has stopped because I am stuck. The problem is that has only be tested with the CDC/ACM driver as described below. Like
bus events are not occurring: Nothing is detected by the USBHS when the the Ethernet driver:
host is connected; no activity is seen on the bus by a USB analyzer when
the host is connected. Possibilities: (1) the pull-ups on DM and DP are
not working. This would prevent the host from detecting the presence of
the device. The DETACH bit is, however, being correctly cleared and the
USB is in the suspend sate. Or (2) some issue with clocking or
configuration of the UTMI. I see nothing wrong in this case. I have
done extensive comparison of the Atmel sample code and study of the data
sheet, but I have not found the key to
solving this.
- This driver does not work reliably with the write back D-Cache. The
write-through D-Cache must be enabled.
6. The full port for audio support is code complete: WM8904 driver, 6. The full port for audio support is code complete: WM8904 driver,
SSC/I2C driver, and CS2100-CP driver. But this code is untested. The SSC/I2C driver, and CS2100-CP driver. But this code is untested. The
WM8904 interface was taken directly from the SAMA5D4-EK and may well WM8904 interface was taken directly from the SAMA5D4-EK and may well
@@ -1864,3 +1857,4 @@ Configuration sub-directories
- Line spacing in the NxTerm window is too much. This is probably - Line spacing in the NxTerm window is too much. This is probably
a font-related issue too. a font-related issue too.