Re: [PATCH v3 1/1] usb:host:xhci support option to disable the xHCI USB2 HW LPM

2017-07-08 Thread Greg Kroah-Hartman
On Sun, Jul 09, 2017 at 12:38:19PM +0700, Thang Q. Nguyen wrote: > On Fri, Jun 23, 2017 at 10:02 AM, Thang Q. Nguyen wrote: > > XHCI specification 1.1 does not require xHCI-compliant controllers > > to always enable hardware USB2 LPM. However, the current xHCI > > driver always enable it when seei

Re: [PATCH v3 1/1] usb:host:xhci support option to disable the xHCI USB2 HW LPM

2017-07-08 Thread Thang Q. Nguyen
On Fri, Jun 23, 2017 at 10:02 AM, Thang Q. Nguyen wrote: > XHCI specification 1.1 does not require xHCI-compliant controllers > to always enable hardware USB2 LPM. However, the current xHCI > driver always enable it when seeing HLC=1. > This patch supports an option for users to control disabling

Re: [PATCH v3 1/1] usb:host:xhci support option to disable the xHCI USB2 HW LPM

2017-06-26 Thread Rob Herring
On Fri, Jun 23, 2017 at 10:02:12AM +0700, Thang Q. Nguyen wrote: > XHCI specification 1.1 does not require xHCI-compliant controllers > to always enable hardware USB2 LPM. However, the current xHCI > driver always enable it when seeing HLC=1. > This patch supports an option for users to control dis

[PATCH v3 1/1] usb:host:xhci support option to disable the xHCI USB2 HW LPM

2017-06-22 Thread Thang Q. Nguyen
XHCI specification 1.1 does not require xHCI-compliant controllers to always enable hardware USB2 LPM. However, the current xHCI driver always enable it when seeing HLC=1. This patch supports an option for users to control disabling USB2 Hardware LPM via DT/ACPI attribute. This option is needed in