From: Neil Armstrong <narmstrong@baylibre.com>
To: balbi@kernel.org, khilman@baylibre.com
Cc: linux-amlogic@lists.infradead.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Neil Armstrong <narmstrong@baylibre.com>
Subject: [PATCH 0/3] arm64: g12-common: parkmode_disable_ss_quirk on DWC3 controller
Date: Mon, 14 Oct 2019 16:17:15 +0200 [thread overview]
Message-ID: <20191014141718.22603-1-narmstrong@baylibre.com> (raw)
In certain circumstances, the XHCI SuperSpeed instance in park mode
can fail to recover, thus on Amlogic G12A/G12B/SM1 SoCs when there is high
load on the single XHCI SuperSpeed instance, the controller can crash like:
xhci-hcd xhci-hcd.0.auto: xHCI host not responding to stop endpoint command.
xhci-hcd xhci-hcd.0.auto: Host halt failed, -110
xhci-hcd xhci-hcd.0.auto: xHCI host controller not responding, assume dead
xhci-hcd xhci-hcd.0.auto: xHCI host not responding to stop endpoint command.
hub 2-1.1:1.0: hub_ext_port_status failed (err = -22)
xhci-hcd xhci-hcd.0.auto: HC died; cleaning up
usb 2-1.1-port1: cannot reset (err = -22)
Setting the PARKMODE_DISABLE_SS bit in the DWC3_USB3_GUCTL1 mitigates
the issue. The bit is described as :
"When this bit is set to '1' all SS bus instances in park mode are disabled"
Neil Armstrong (3):
doc: dt: bindings: usb: dwc3: Update entries for disabling SS
instances in park mode
usb: dwc3: gadget: Add support for disabling SS instances in park mode
arm64: dts: g12-common: add parkmode_disable_ss_quirk on DWC3
controller
Documentation/devicetree/bindings/usb/dwc3.txt | 2 ++
arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi | 1 +
drivers/usb/dwc3/core.c | 5 +++++
drivers/usb/dwc3/core.h | 4 ++++
4 files changed, 12 insertions(+)
--
2.22.0
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next reply other threads:[~2019-10-14 14:17 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-14 14:17 Neil Armstrong [this message]
2019-10-14 14:17 ` [PATCH 1/3] doc: dt: bindings: usb: dwc3: Update entries for disabling SS instances in park mode Neil Armstrong
2019-10-23 20:11 ` Rob Herring
2019-11-11 0:38 ` Tim
2019-11-11 1:58 ` Jun Li
2019-11-11 14:05 ` Tim
2019-11-12 1:48 ` Jun Li
2019-11-12 9:00 ` Neil Armstrong
2019-11-12 10:51 ` Jun Li
2019-11-12 20:03 ` Thinh Nguyen
2019-12-10 8:55 ` Neil Armstrong
2019-12-11 0:45 ` Tim
2019-12-20 9:58 ` Tim
2019-10-14 14:17 ` [PATCH 2/3] usb: dwc3: gadget: Add support " Neil Armstrong
2019-10-14 14:17 ` [PATCH 3/3] arm64: dts: g12-common: add parkmode_disable_ss_quirk on DWC3 controller Neil Armstrong
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