coreboot-kgpe-d16/payloads/libpayload/drivers/usb
Rajmohan Mani 1528ffa57c libpayload: xhci: Add delay to get reset working more reliably
Existing Intel xHCI controllers require a delay of 1 ms,
after setting the CMD_RESET bit in command register, before
accessing any HC registers. This allows the HC to complete
the reset operation and be ready for HC register access.
Without this delay, the subsequent HC register access,
may result in a system hang, very rarely.

Verified CherryView / Braswell platforms go through over
1000 warm reboot cycles (which was not possible without
this patch), without any xHCI reset hang in depthcharge.

BRANCH=None
BUG=None
TEST=Verified CherryView / Braswell platforms go through
over 1000 warm reboot cycles, without any xHCI reset hang
in depthcharge.

Change-Id: I8eff5115ca52738bdcf8bc65fbfb2a5f60a0abe1
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 3e7ea70df36e3bf35a6ee1297640900ee76bfdac
Original-Change-Id: Id681a19d0eedb0e2c29e259c5467bcde577e3460
Original-Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/310022
Original-Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/12325
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
2015-11-05 17:40:30 +01:00
..
TODO
dwc2.c tree: drop last paragraph of GPL copyright header 2015-10-31 21:37:39 +01:00
dwc2.h tree: drop last paragraph of GPL copyright header 2015-10-31 21:37:39 +01:00
dwc2_private.h tree: drop last paragraph of GPL copyright header 2015-10-31 21:37:39 +01:00
dwc2_rh.c tree: drop last paragraph of GPL copyright header 2015-10-31 21:37:39 +01:00
ehci.c libpayload: usb: dwc2: support split transaction 2015-07-16 22:39:59 +02:00
ehci.h
ehci_private.h libpayload: EHCI: Support root-hub TT feature 2015-03-23 17:57:40 +01:00
ehci_rh.c libpayload: EHCI: Support root-hub TT feature 2015-03-23 17:57:40 +01:00
generic_hub.c
generic_hub.h
ohci.c libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
ohci.h
ohci_private.h
ohci_rh.c
quirks.c Remove empty lines at end of file 2015-06-08 00:55:07 +02:00
uhci.c
uhci.h
uhci_private.h
uhci_rh.c libpayload: Improve sanity checking in UHCI driver 2015-02-23 21:59:25 +01:00
usb.c libpayload: usb: Retry get_descriptor() on failure 2015-10-27 15:00:16 +01:00
usb_dev.c
usbhid.c libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
usbhub.c libpayload: usb: Add support for SuperSpeed hubs 2015-07-18 09:40:48 +02:00
usbinit.c libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
usbmsc.c libpayload: usbmsc: Add small delay during initialization to fix CZ60 2015-10-29 21:06:45 +01:00
xhci.c libpayload: xhci: Add delay to get reset working more reliably 2015-11-05 17:40:30 +01:00
xhci.h
xhci_commands.c libpayload: usb: Support MTK xHCI host controller 2015-06-03 11:11:59 +02:00
xhci_debug.c libpayload: usb: Add support for SuperSpeed hubs 2015-07-18 09:40:48 +02:00
xhci_devconf.c libpayload: usb: Add support for SuperSpeed hubs 2015-07-18 09:40:48 +02:00
xhci_events.c libpayload: xhci: Carry over fixes from Chromium tree 2015-08-14 15:14:09 +02:00
xhci_private.h libpayload: usb: xhci: Count new Max Scratchpad Bufs bits from XHCI 1.1 2015-08-14 15:17:30 +02:00
xhci_rh.c libpayload: usb: xhci: Fix list of cleared port change bits 2015-08-14 15:18:16 +02:00