On Wed, Aug 14, 2013 at 09:53:16PM -0500, Peter A. Bigot wrote: > On 07/09/2013 02:43 AM, Naumann Andreas wrote: > >In chapter 'Advisory 2.1 USB Host Clock Drift Causes USB Spec Non-compliance > >in Certain Configurations' of the TI Errata it is recommended to use certain > >div/mult values for the DPLL5 clock setup. > >So far u-boot used the old 34xx values, so I added the errata recommended > >values specificly for 36xx init only. > >Also, the FSEL registers exist no longer, so removed them from init. > > > >Tested this on a AM3703 board with 19.2MHz oscillator, which previously > >couldnt lock the dpll5 (kernel complained). As a consequence the EHCI USB > >port wasnt usable in U-Boot and kernel. With this patch, kernel panics > >disappear and USB working fine in u-boot and kernel. > > > >Signed-off-by: Andreas Naumann <anaum...@ultratronik.de> > > While this patch works with Linux that has been patched for this > erratum, it will cause problems with some unpatched versions of > Linux.
Right. So Linux also needs to be patched for the erratum. -- Tom
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