On 2017-08-03 15:44, Andrew Lunn wrote: > On Thu, Aug 03, 2017 at 12:00:27PM +0200, Peter Rosin wrote: >> Hi! >> >> Texas has apparently made copies for some of the NXP devices >> handled by the drivers/i2c/muxes/i2c-mux-pca954x.c driver. > > This happens a lot in the i2c space. Look at all the at24 EEPROM > clones. Yet they all use the same compatible string. Errhm, no they don't. Hint, try $ git grep 'compatible.*,24c' There are all sorts of manufacturers in use. atmel, microchip, onsemi, st, etc. There are also "bad" manufacturers such as 'at,24c64' and "bad" parts such as 'atmel,at24c16'. It's a mess. Anyway, the only reason that ever works is because of loose matching by the i2c core (it falls back to ignoring the manufacturer or something like that, but I'm not sure about the exact details). IIUC there is ongoing work to get rid of that loose matching, and adding more of it is not the way forward. Cheers, peda
