On 07.10.2013 16:02, Erik Faye-Lund wrote: > So the question is really how the hardware treats writes to > non-existent registers. My guess would be that they are simply not > recorded, and if that's the case it doesn't matter what we do. And > doing an unconditional AND is faster than doing a bit-test followed by > a conditional branch. Hardware ignores writes to non-existent registers. Sometimes non-existent registers are taken into use in future versions, though. Terje -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html