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 after Port

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 * * See file

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 + * Copyright (c) 2009-2012 NVIDIA

[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

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. Therefore we