Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1470437

[RFT PATCH v3 0/3] usb: dwc2: Fix core reset and force mode delays

Show all headers | View raw

This series tries to account for a delay from the IDDIG debounce
filter when switching modes. This delay is a function of the PHY clock
speed and can range from 5-50 ms. This delay must be taken into
account on core reset and force modes. A full explanation is provided
in the patch commit log and code comments.

Patch 1 is a prerequisite to this fix.

Patch 2 implements the delay for core reset.

Patch 3 implements the delay for set/clear force modes.

Appreciate any testing, especially on RK3188 and RPi platforms.

Patch 1-2 can probably be merged right now as they shouldn't break
anything.

Patch 3 should solve RPi issues, but has problems in RK3188 that need
to be debugged.

v3:
* Added tested-bys for patch 1-2
* Fixed an issue where a function was not returning a value
* Dropped patch 4

v2:
* Broke up the last patch of the original series

Regards,
John

John Youn (3):
  usb: dwc2: gadget: Only initialize device if in device mode
  usb: dwc2: Add delay to core soft reset
  usb: dwc2: Properly account for the force mode delays

 drivers/usb/dwc2/core.c   | 128 ++++++++++++++++++++++++++++++++++++++++------
 drivers/usb/dwc2/core.h   |   1 +
 drivers/usb/dwc2/gadget.c |   7 ++-
 drivers/usb/dwc2/hw.h     |   1 +
 4 files changed, 118 insertions(+), 19 deletions(-)

-- 
2.9.0

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[RFT PATCH v3 0/3] usb: dwc2: Fix core reset and force mode delays John Youn <johnyoun@synopsys.com> - 2016-08-25 23:30 +0200
  [RFT PATCH v3 3/3] usb: dwc2: Properly account for the force mode delays John Youn <johnyoun@synopsys.com> - 2016-08-25 23:30 +0200

csiph-web