Commit graph

5 commits

Author SHA1 Message Date
Dinh Nguyen
b5ab663a69 usb: dwc2: disable erroneous overcurrent condition
For the case where an external VBUS is used, we should enable the external
VBUS comparator in the driver. This would prevent an unnecessary overcurrent
error which would then disable the host port.

The overcurrent condition was happening on the SoCFPGA Cyclone5 devkit, thus
USB was not working on the devkit. This patch fixes that problem.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2016-03-05 02:21:36 +01:00
Stefan Brüns
d2ff51b372 usb: dwc2: Add SPLIT INTERRUPT transaction support
CSPLITs for INTERRUPT transactions have to be scheduled in each microframe
following the SSPLIT. INTERRUPT transfers are executed in the next even/
odd microframe depending on the HCCHAR_ODDFRM flag.

As there are no handshakes for INTERRUPT SSPLITs the SSPLIT may have
failed (transport error) without the error being detected by the host
driver. If the last CSPLIT is not received within 4 microframes after the
SSPLIT there was a transaction error and the complete transaction has
to be restarted.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
2016-01-23 16:21:11 +01:00
Peter Griffin
5cfd6c002a usb: dwc2: Add support for v3 snpsid value
This has been tested to the extent that I can enumerate
a asix usb networking adapter and boot a kernel over usb
on the 96boards hikey u-boot port I'm currently doing.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
2015-05-29 12:41:04 +02:00
Stephen Warren
4748cce573 usb: dwc2: detect device speed correctly
This doesn't make my LS keyboard work any better, but it does at least
report the correct speed in "usb tree".

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-04-14 05:47:59 +02:00
Oleksandr Tymoshenko
6e9e06260d usb: dwc2: Add driver for Synopsis DWC2 USB IP block
This is the USB host controller used on the Altera SoCFPGA and Raspbery Pi.

This code has three checkpatch warnings, but to make sure it stays at least
readable and clear, these are not fixed. These bugs are in the USB request
handling combinatorial logic, so any abstracting of those is out of question.

Tested on DENX MCV (Altera SoCFPGA 5CSFXC6C6U23C8N) and RPi B+ (BCM2835).

Signed-off-by: Oleksandr Tymoshenko <gonzo@bluezbox.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Pavel Machek <pavel@denx.de>
Cc: Vince Bridgers <vbridger@altera.com>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2014-10-22 22:01:58 +02:00