bb2e8108e1
This driver supports only basic timekeeping functionality. It completely replaces the ds133x driver. It can also replace the ds1374 driver, but that will take a few other changes in MIPS code and config, and will be committed separately. It does NOT replace the existing ds1307 driver, which provides access to some of the extended features on the 1307 chip, such as controlling the square wave output signal. If both ds1307 and ds13rtc drivers are present, the ds1307 driver will outbid and win control of the device. This driver can be configured with FDT data, or by using hints on non-FDT systems. In addition to the standard hints for i2c devices, it requires a "chiptype" string of the form "dallas,ds13xx" where 'xx' is the chip id (i.e., the same format as FDT compat strings).
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