Hi, On Tue, Dec 2, 2014 at 6:46 PM, Wolfram Sang <[email protected]> wrote: > >> But given the bugs, it will be useful to just disable it if the system >> doesn't >> require repeated start. > > What do you do when disable repeated start? Sending STOP and START? If > so, this is really something different than repeated start. By using > I2C_FUNC_I2C a user expects repeated start, so if the HW does not > support it, we should say so and don't try to emulate it with something > different. >
Yes, we send stop. Using repeated start, when number of messages passed > 1, HOLD bit is set by the driver. This is an indication to the controller not to send a STOP. If we disable repeated start, the driver will not set HOLD bit. All the messages are sent but with START and a STOP for each of them. Regards, Harini -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
