Re: [U-Boot] [PATCH v4 1/1] tegra: usb: Fix device enumeration problem of USB1

2012-06-21 Thread Marek Vasut
Dear Jim Lin, > >From: Marek Vasut [mailto:marek.va...@gmail.com] > >Sent: Thursday, June 21, 2012 6:16 PM > > > >> --- a/drivers/usb/host/ehci-tegra.c > >> +++ b/drivers/usb/host/ehci-tegra.c > >> @@ -1,5 +1,5 @@ > >> > >> /* > >> > >> - * Copyright (c) 2009 NVIDIA Corporation > >> + * Copyrig

Re: [U-Boot] [PATCH v4 1/1] tegra: usb: Fix device enumeration problem of USB1

2012-06-21 Thread Jim Lin
>From: Marek Vasut [mailto:marek.va...@gmail.com] >Sent: Thursday, June 21, 2012 6:16 PM >> --- a/drivers/usb/host/ehci-tegra.c >> +++ b/drivers/usb/host/ehci-tegra.c >> @@ -1,5 +1,5 @@ >> /* >> - * Copyright (c) 2009 NVIDIA Corporation >> + * Copyright (c) 2009-2012 NVIDIA Corporation >> * >>

Re: [U-Boot] [PATCH v4 1/1] tegra: usb: Fix device enumeration problem of USB1

2012-06-21 Thread Marek Vasut
Dear Jim Lin, > A known hardware issue of USB1 port where bit 1 (connect status > change) of PORTSC register will be set after issuing Port Reset > (like "usb reset" in u-boot command line). > This will be treated as an error and stops later device enumeration. > > Therefore we clear that bit aft

Re: [U-Boot] [PATCH v4 1/1] tegra: usb: Fix device enumeration problem of USB1

2012-06-20 Thread Stephen Warren
On 06/20/2012 09:24 PM, Jim Lin wrote: > A known hardware issue of USB1 port where bit 1 (connect status > change) of PORTSC register will be set after issuing Port Reset > (like "usb reset" in u-boot command line). > This will be treated as an error and stops later device enumeration. > > Therefo

[U-Boot] [PATCH v4 1/1] tegra: usb: Fix device enumeration problem of USB1

2012-06-20 Thread Jim Lin
A known hardware issue of USB1 port where bit 1 (connect status change) of PORTSC register will be set after issuing Port Reset (like "usb reset" in u-boot command line). This will be treated as an error and stops later device enumeration. Therefore we clear that bit after Port Reset in order to p