Endianness of multi-bit 'gpios' property?
Timur Tabi
timur at freescale.com
Wed Aug 8 06:39:22 EST 2012
When a 'gpios' property defines multiple GPIO pins, is there any kind of
expectation on the endian order of those pins? For example, take this:
gpios = <&gpio0 0 0
&gpio0 1 0>;
If I write a value of "2" to this GPIO pair, should I expect a value of 1
to be written to pin 0 and a value of 0 written to pin 1 (i.e.
big-endian), or the other way around?
I'm seeing some code that interprets the bits as big-endian, and some code
that interprets it as little-endian.
--
Timur Tabi
Linux kernel developer at Freescale
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