On Fri, Nov 22, 2013 at 03:51:41PM +0100, Ludovic Desroches wrote: > Hi Wolfram, > > On Fri, Nov 22, 2013 at 03:33:51PM +0100, Wolfram Sang wrote: > > On Fri, Nov 22, 2013 at 03:07:08PM +0100, ludovic.desroches@xxxxxxxxx wrote: > > > From: Ludovic Desroches <ludovic.desroches@xxxxxxxxx> > > > > > > There are still I2C unexpected behaviors which are solved by reducing TWI > > > internal frequency. > > > > > > Cc: <stable@xxxxxxxxxxxxxxx> #3.10+ > > > Signed-off-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxx> > > > > I think the commit message needs more details. Is this a true bugfix > > because the real bus frequency was too high because of the wrong > > divider? Is this a workaround which makes things work but will make the > > bus frequency slower than it should be? > > This fix doesn't concern the i2c bus frequency, only the internal IP frequency. > > TWI has been validated at 66MHz. With some devices, transfer hangs during i2c > frame transmission. This issue disappears when reducing the internal frequency > of the IP. Maybe there is some oversampling on i2c signals. > Unfortunately, I have no clear status about the root cause that's why > the commit message was imprecise. This paragraph is a way better commit message IMO :)
Attachment:
signature.asc
Description: Digital signature
