Document the clock properties required by the at91 i2c bus driver.
Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com>
Acked-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>