Re: [PATCH v5 1/1] usb:host:xhci support option to disable the xHCI USB2 HW LPM

2017-08-18 Thread Mathias Nyman
On 17.08.2017 06:19, Thang Q. Nguyen wrote: On Tue, Aug 8, 2017 at 11:27 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

Re: [PATCH v5 1/1] usb:host:xhci support option to disable the xHCI USB2 HW LPM

2017-08-16 Thread Thang Q. Nguyen
On Tue, Aug 8, 2017 at 11:27 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

[PATCH v5 1/1] usb:host:xhci support option to disable the xHCI USB2 HW LPM

2017-08-07 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