Hi Viresh, On Fri, May 4, 2012 at 3:10 PM, Viresh Kumar <viresh.kumar@xxxxxx> wrote: > Add i2c bus recovery infrastructure to i2c adapters as specified in the i2c > protocol Rev. 03 section 3.16 titled "Bus clear". > > http://www.nxp.com/documents/user_manual/UM10204.pdf > > Sometimes during operation i2c bus hangs and we need to give dummy clocks to > slave device to start the transfer again. Now we may have capability in the bus > controller to generate these clocks or platform may have gpio pins which can be > toggled to generate dummy clocks. This patch supports both. > > This patch also adds in generic bus recovery routines gpio or scl line based > which can be used by bus controller. In addition controller driver may provide > its own version of the bus recovery routine. > It might me worth how was this tested? Was both the approaches given a try? Also it might help if one of the drivers currently doing it is ported to the framework. Just a suggestion not an objection to the patch. > Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxx> > --- > Documentation/i2c/bus-recovery | 87 ++++++++++++++++++++++ -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
