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[0/2] usb: xhci: addition of timing quirk

Message ID 1511284690-3878-1-git-send-email-awallis@codeaurora.org
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Series usb: xhci: addition of timing quirk | expand

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Adam Wallis Nov. 21, 2017, 5:18 p.m. UTC 
On systems that allow CPUs to run at an extremely reduced frequency,
it is possible to create an "interrupt" storm by USB settings that are not
ideal at these speeds. This patch series introduces a quirk bit that currently
only touches the Interrupt Control register but might be used in the future
with other similar registers. This change allows for firmware (or scripts)
to set these registers as required in place of using hard-coded values
which might not be ideal for all platforms.

Adam Wallis (2):
  usb: xhci: add relaxed timing quirk bit
  usb: host: xhci-plat: check relaxed timing quirk bit

 Documentation/devicetree/bindings/usb/usb-xhci.txt |  1 +
 drivers/usb/host/xhci-plat.c                       |  3 +++
 drivers/usb/host/xhci.c                            | 25 +++++++++++++++-------
 drivers/usb/host/xhci.h                            |  1 +
 4 files changed, 22 insertions(+), 8 deletions(-)