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Add a very abridged version of SX150x driver from Linux. New, "pinctrl"
version of the driver was used as a base. As it was already mentioned
this driver supports very limited amount of the original functionality,
and the following are the features that were dropped:
- Interrupt support
- Support for any chip other that SX150x (due to lack of HW to test
with)
- Any pinctlr-like functions: pull-up/pull-down, open-drain,
etc. configuration
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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