[U-Boot] [PATCH] tegra: paz00: add device tree support

Marc Dietrich marvin24 at gmx.de
Tue May 22 23:15:46 CEST 2012


On Tuesday 22 May 2012 10:58:37 Stephen Warren wrote:
> On 05/22/2012 10:14 AM, Stephen Warren wrote:
> > On 05/22/2012 02:04 AM, Marc Dietrich wrote:
> >> Hi Stephen,
> >> 
> >> Am Montag, 21. Mai 2012, 14:04:37 schrieb Stephen Warren:
> >>> From: Stephen Warren <swarren at nvidia.com>
> >>> 
> >>> ... to enable USB host support, which enables Ethernet support.
> >>> 
> >>> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> >> 
> >> while adding usb support is fine, I see no reason to add smsc95xx support
> >> because contrary to harmony, paz00 does not contain an ethernet port.
> > 
> > Is the SMSC95xx only an internal part, or could it be present on a
> > user-pluggable USB dongle? I wasn't sure, so I left it in.
> 
> Looking at the driver (and the Linux kernel driver and SMSC's website),
> it supports both the standalone USB->Ethernet 9500 chip that's likely to
> be in USB Ethernet dongles, and various combo USB hub + Ethernet chips
> that are found on motherboards (e.g. Harmony). As such, I think it's
> reasonable to leave this config option enabled on Paz00 and other Tegra
> boards even when such a chip isn't on the board itself. Do you agree?

Following this argument would mean to enable all current (and future) usb 
devices and we end up with an u-boot which is to heavy to swim. I only have a 
mcs7830 which is unfortunately not supported. Do you have a SMSC95xx based usb 
adapter or plan to get one? In this case I think it would be ok to enable it, 
otherwise I tend to disagree here. On the other hand, given that you kindly 
take care of the paz00 code, the decision is up to you. 

Just my two cents,

Marc



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