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| author | Faisal Hassan <quic_faisalh@quicinc.com> | 2024-11-29 20:34:22 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-04 18:09:41 +0300 |
| commit | 04d5b4c23f3b7cbf44a71a338dae0c7aabd86c29 (patch) | |
| tree | 64f5d91ce54c944b639a4c5c775cd928ec244e29 /scripts/kernel-doc | |
| parent | a787bffff5d14545c8e2d061b6f7839ede8ead19 (diff) | |
| download | linux-04d5b4c23f3b7cbf44a71a338dae0c7aabd86c29.tar.xz | |
usb: dwc3: core: Disable USB2 retry for DWC_usb31 1.80a and prior
STAR 9001346572 addresses a USB 2.0 endpoint blocking issue in host mode
for controller versions DWC_usb31 1.70a and 1.80a. This issue affects
devices on both high-speed and full-speed bus instances. When all
endpoint caches are filled and a single active endpoint receives
continuous NAK responses, data transfers to other endpoints may get
blocked.
To resolve this, for controller versions DWC_usb31 1.70a and 1.80a, the
GUCTL3 bit[16] (USB2.0 Internal Retry Disable) is set to 1. This bit
disables the USB2.0 internal retry feature and ensures proper eviction
handling in the host controller endpoind cache. The GUCTL3[16] register
function is available only from DWC_usb31 version 1.70a.
Signed-off-by: Faisal Hassan <quic_faisalh@quicinc.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20241129173422.20063-1-quic_faisalh@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/kernel-doc')
0 files changed, 0 insertions, 0 deletions