Michal Lenc b005f844f5 ioexpander: add support for ISO1I813T expander
This commit adds basic support for electrically isolated 8 bit expander.
The expander communicates with the MCU via SPI interface. Both single
and multiple pin read are supported.

Signed-off-by: Michal Lenc <michallenc@seznam.cz>
2023-08-29 17:35:59 +08:00
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