[U-Boot] [PATCH] omap-common: SYS_BOOT fallback logic correction

Tom Rini trini at konsulko.com
Thu Aug 27 01:06:01 CEST 2015


On Thu, Aug 27, 2015 at 12:59:31AM +0200, Paul Kocialkowski wrote:
> Le mercredi 26 août 2015 à 09:23 -0400, Tom Rini a écrit :
> > On Wed, Aug 26, 2015 at 12:51:07PM +0200, Paul Kocialkowski wrote:
> > 
> > [snip]
> > > On all OMAP platforms, USB peripheral loading is done via bulk USB and I
> > > suspect it is the same on am33xx platforms.
> > 
> > Actually no! :(
> > 
> > On OMAP3/4/5 (so dra7xx/am57xx) it's the same bulk USB.  On
> > AM33xx/AM43xx it's (in ROM) USB RNDIS.  That's why on am33xx/am43xx we
> > continue on with USB RNDIS (which is what SPL_USBETH_SUPPORT implements,
> > not the other USB "ethernet" class).
> 
> Interesting. So with this in mind, would it be acceptable to assume that
> BOOT_DEVICE_USB and BOOT_DEVICE_USBETH are always two distinct boot
> devices and thus not have to care about whether they're equal or not and
> just assume they're not, like any other BOOT_DEVICE?
> 
> This would greatly simplify the logic and make everything more readable.
> 
> I can submit a new patch set in that direction tomorrow.

Yes, lets go with that.

-- 
Tom
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