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

From: John Youn
Date: Thu Aug 25 2016 - 17:26:45 EST

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

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

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

* Broke up the last patch of the original series


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(-)