Op 16-01-2025 om 16:40 schreef Andy Shevchenko:
On some platforms (Intel-based and AFAIK ARM-based) the EPs in the gadget
(USB Device Controller mode) may be reserved for some special means, such as
tracing. This series extends DT schema and driver to avoid using those.
Without this the USB gadget mode won't work properly (those devices that
"luckily" allocated the reserved EPs).
Ferry already tested the privately sent PoC of this, but I ask him again to
re-test this version which is slightly different.
Andy Shevchenko (3):
dt-bindings: usb: dwc3: Add a property to reserve endpoints
usb: dwc3: gadget: Add support for snps,reserved-endpoints property
usb: dwc3: gadget: Skip endpoints ep[18]{in,out} on Intel Merrifield
.../devicetree/bindings/usb/snps,dwc3.yaml | 10 +++++
drivers/usb/dwc3/dwc3-pci.c | 9 +++++
drivers/usb/dwc3/gadget.c | 38 ++++++++++++++++++-
3 files changed, 56 insertions(+), 1 deletion(-)
Yes I retested this now on v6.13.0-rc7 Intel Merrifield and found no
problems. Skipping the tracing end point has definitely always been
needed on this platform. Thanks!
Tested-by: Ferry Toth <fntoth@xxxxxxxxx>
