Simon Glass e5901c94e3 dm: gpio: Add a function to read an ID from a list of GPIOs ...

For board IDs a common approach is to set aside several GPIOs for use in
determining the board ID. This can provide information about board features
and the revision.

Add a function that turns a list of GPIOs into an integer by assigning
each GPIO to a single bit.

Signed-off-by: Simon Glass <sjg@chromium.org>

2014-11-21 07:24:11 +01:00

8.9 KiB

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