On 06/16/2015 09:40 AM, Silvan Wicki wrote: > The Datasheet mentions on page 31 that the bits 10-31 must be read as > don't care and written as 0. > https://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf > > We cannot guarantee that we reed bits 10-31 as always 0 (becuase the > datasheet says read as don't care). We clear the bits with a bitmask to > prevent writing back unknown data at the reserved bits. I guess that's true. Acked-by: Stephen Warren <swarren@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html