On Sat, May 20, 2017 at 02:24:56PM +0700, Thang Q. Nguyen wrote: > XHCI specification 1.1 does not require xHCI 1.0 compliant controllers > to always enable hardware USB2 LPM. > However, the current xHCI driver always enable it by setting HLE=1 when > seeing HLC=1. This makes certain xHCI controllers that have broken USB2 > HW LPM fail to work as there is no way to disable this feature. > This patch adds support to control disabling USB2 Hardware LPM via > DT/ACPI attribute. > > Signed-off-by: Tung Nguyen <tunguyen@xxxxxxx> > Signed-off-by: Thang Q. Nguyen <tqnguyen@xxxxxxx> > --- > Changes since v1: > - Update DT/ACPI attribute and corresponding codes from HLE to LPM to > be consistent with other attribute names. > --- > Documentation/devicetree/bindings/usb/usb-xhci.txt | 1 + Acked-by: Rob Herring <robh@xxxxxxxxxx> > drivers/usb/host/xhci-plat.c | 3 +++ > drivers/usb/host/xhci.c | 7 ++++++- > drivers/usb/host/xhci.h | 1 + > 4 files changed, 11 insertions(+), 1 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
