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drivers: add bindings for all existing mcp23xxx variants

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This allows getting rid of the ngpios property, which is implicit in the
part number. It also prepares for configuring pins as open-drain on
supporting chips in the next commit.

Signed-off-by: Armin Brauns <armin.brauns@embedded-solutions.at>
This commit is contained in:
Armin Brauns 2024-03-13 09:14:28 +00:00 • committed by Carles Cufí
commit 054cc09c88
16 changed files with 146 additions and 46 deletions
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6
doc/releases/migration-guide-4.0.rst
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@ -45,6 +45,12 @@ Device Drivers and Devicetree
* The ``compatible`` of the LiteX uart controller has been renamed from
``litex,uart0`` to :dtcompatible:`litex,uart`. (:github:`74522`)
* The devicetree bindings for the Microchip ``mcp23xxx`` series have been split up. Users of
``microchip,mcp230xx`` and ``microchip,mcp23sxx`` should change their devicetree ``compatible``
values to the specific chip variant, e.g. :dtcompatible:`microchip,mcp23017`.
The ``ngpios`` devicetree property has been removed, since it is implied by the model name.
(:github:`65797`)
Controller Area Network (CAN)
=============================