New kernel drivers and device migrations (#563)

2026-07-14 20:26:57 +02:00
parent 955416dac8
commit 8af6204ba1
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+# TCA9535 / TCA9539 I/O expander
+
+A driver for the TI `TCA9535` and `TCA9539` 16-bit I2C-bus I/O expanders. Both parts
+share the same PCA9555-compatible register map (differing only in package and interrupt
+pin): two 8-bit ports for input, output, polarity inversion, and direction, addressed as
+pins 0-15 (port 0 = pins 0-7, port 1 = pins 8-15).
+
+It does not support pull-up/down resistors or high-impedance outputs; requesting those
+flags returns `ERROR_NOT_SUPPORTED`.
+
+License: [Apache v2.0](LICENSE-Apache-2.0.md)