auxdisplay: Add I2C gpio expander example

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The hd44780 displays are often used with pcf8574 based I/O expanders.
Add example to documentation.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Ralf Schlatterbeck <rsc@runtux.com>
[Added Suggested-by tag]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

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Ralf Schlatterbeck 2021-05-19 13:54:51 +02:00 • committed by Miguel Ojeda

parent 614124bea7

commit c784e46c84

1 changed files with 30 additions and 1 deletions

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Documentation/devicetree/bindings/auxdisplay/hit,hd44780.yaml

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