I don't think anybody's ever asked us about it, much less worked on it. Looks like HS mode was defined in I2C V2.0 in 1998. Would you be working on a bit-banging driver or is here an I2C bus master out there supporting HS mode? If you are going to write a driver please keep in touch and let us know how it's going and what API extensions you propose. If a bit-banger big desision is to mod and/or start from i2c-algo-bit or i2c-algo-biths. algo-bit is 33% duty cycle, biths is 50% duty cycle and in theory can go faster. However i2c spec says HS mode is 33% duty cycle. Go figure. See TODO for more info. mds Woodruff, Richard wrote: > Hello, > > I just started grep'ing around to see if HS I2C support is implemented > and have not found anything. > > Has any one used this with Linux before? The Spec would indicate that a > slow/fast preamble of sorts is used followed by fast data transfers. > > We will likely add a driver if none exists, but knowing its been done > before is always comforting. > > Regards/Thanks, > Richard W. >
