On 25/06/13 14:22, Linus Walleij wrote: > Can't we just try to come up with a patch that nails down the meaning of > slew rate in some meaningful manner then? > > So according to: > http://en.wikipedia.org/wiki/Slew_rate > a proper expression for slew rate would be dV/dt i.e. > something like microvolts per microsecond (which then just > becomes volts/second). > > What we need to figure out is what range will be applicable within > reasonable doubt for current scenarios and the next few years. > > What are your datasheets specifying here, and what would be > a proper measure?
My datasheet says: 0: slow (half frequency) 1: fast I just got a reply back from a hardware engineer, who said that the relationship with the actual volts/usec will depend on both the drive strength and the load on the pad, and that a definite answer probably requires running a simulation. Cheers James -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
