Jean, On Tue, Jan 17, 2012 at 20:36:55, Jean Delvare wrote: > On Tue, 17 Jan 2012 14:49:01 +0000, Srinivasan, Nageswari wrote: > > We have a slave device which requires more than 500 registers > > to be configured. (kind of bulk write) So, looking for an option > > of configuring all of them in single command. > > How long will it take? You should ask yourself if it really OK to block > the bus for so long. > > What happens if you configure the chip in several goes? The time > penalty shouldn't be that big and I can't believe a chip can't be > configured one register after the other (or at least group by group.) > > If you really have to do it all in one go (and even if not) you should > check if the chip supports register address pointer autoincrement > (or block writes.) This would let you write several register values in > one message, so you no longer have to send 500 messages, plus this > would be faster than your current strategy. > Thanks. Will try these options. > -- > Jean Delvare > Nageswari -- 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
