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Device migrations, driver migrations and more (#575)

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Ken Van Hoeylandt
2026-07-20 23:43:17 +02:00
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Drivers/ch422g-module/README.md
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# CH422G I/O expander
A driver for the `CH422G` I2C-bus I/O expander by WCH, commonly used on Waveshare ESP32
display boards to drive display/touch reset and enable lines.
Exposes EXIO0-7 as a `GPIO_CONTROLLER_TYPE` device. The chip has no register to configure
per-pin direction and no readback for its output register, so only output pins are supported
and the driver keeps a local shadow of the last written value.
License: [Apache v2.0](LICENSE-Apache-2.0.md)