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2021-06-09auxdisplay: Add I2C gpio expander exampleRalf Schlatterbeck-1/+30
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>
2020-05-28dt-bindings: auxdisplay: hd44780: Convert to json-schemaGeert Uytterhoeven-0/+96
Convert the Hitachi HD44780 Character LCD Controller Device Tree binding documentation to json-schema. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Rob Herring <robh@kernel.org>