From: Adam Wallis <awallis-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mathias Nyman
<mathias.nyman-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: timur-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org
Subject: [PATCH 0/2] usb: xhci: addition of timing quirk
Date: Tue, 21 Nov 2017 12:18:08 -0500 [thread overview]
Message-ID: <1511284690-3878-1-git-send-email-awallis@codeaurora.org> (raw)
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(-)
--
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Qualcomm Technologies, Inc. is a member of the
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next reply other threads:[~2017-11-21 17:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-21 17:18 Adam Wallis [this message]
[not found] ` <1511284690-3878-1-git-send-email-awallis-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-11-21 17:18 ` [PATCH 1/2] usb: xhci: add relaxed timing quirk bit Adam Wallis
[not found] ` <1511284690-3878-2-git-send-email-awallis-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-11-21 19:11 ` Rob Herring
2017-11-21 19:49 ` Adam Wallis
[not found] ` <f200ce55-ac67-02f9-4dbf-7a3ba5b52b39-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-11-21 20:06 ` Rob Herring
[not found] ` <CAL_JsqLZgnTTEiLXD8ZOK-0qd58i16e7h_-2yjHN+zRFfqvH4Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-11-22 0:07 ` Adam Wallis
[not found] ` <32f8dc7e-9fde-5e45-1570-a9ec372579fa-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-11-22 15:24 ` Mathias Nyman
[not found] ` <ee0ca959-1812-a4e4-346f-d57a1fdade13-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-11-22 19:56 ` Adam Wallis
2017-11-22 23:32 ` Adam Wallis
[not found] ` <3c44d4d0-e10c-bacc-8e7f-df04bed5dc21-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-11-23 10:59 ` Mathias Nyman
[not found] ` <c46e19a2-4b37-473c-a563-6fddf0c62070-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-11-23 14:35 ` Adam Wallis
2017-11-21 17:18 ` [PATCH 2/2] usb: host: xhci-plat: check " Adam Wallis
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