Hi, > Did anybody give thoughts to how we could support "smbus" block > transfers with a size up to 0xff ? This is an extension of smbus > that part of the PMbus protocol spec. For completeness, SMBus Spec V3 (released 2015) increased the allowed transfer size to 255 as well. > > Our current code has a lot of places where I2C_SMBUS_BLOCK_MAX is > hard wired. Including down in almost all drivers. > > So it would have to be an evolutionary process. > > I was thinking a message flag along with a functionality bit > maybe ? I have never really scratched my head about this issue yet and don't know of any on-going activity. It is notable, though, that we export I2C_SMBUS_BLOCK_MAX to userspace, too. Regards, Wolfram
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