rtc/ds1307.c thas the following code fragment.

#if CFG_I2C_SPEED > 100000 # error The DS1307 is specified only up to 100kHz! #endif

Although, the datasheet says the part is 100kHz only, newer parts operates at 400kHz as well. I would like to eliminate this section of code (or at least change the #error to #warning).

Leave the decision to use this part above 100kHz (and pros and cons) to the board designer!

I will send a patch for this... Any comments?

Best regards, Tolunay