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Integrate linux-seco-rk/fxl6408

GitBot requested to merge linux-seco-rk/fxl6408 into kirkstone

Commit: https://git.seco.com/edgehog/bsp/rockchip/linux-seco-rk/-/commit/a8fc702dcea9afd240b691dea44c0042b9f612c0

[DEFCONFIG][GPIO] add support for FXL6408 GPIO expander

activate the driver for FXL6408 in seco_linux_defconfig

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Commit: https://git.seco.com/edgehog/bsp/rockchip/linux-seco-rk/-/commit/6e94930377ec4e15fbb61d2e406928540c8a9b0c

[DRIVER] fxl6408: add I2C GPIO expander driver

Add minimal driver for Fairchild FXL6408 8-bit I2C-controlled GPIO expander using the generic regmap based GPIO driver (GPIO_REGMAP).

The driver implements setting the GPIO direction, reading inputs and writing outputs.

In addition to that the FXL6408 has the following functionalities:

  • allows to monitor input ports for data transitions with an interrupt pin
  • all inputs can be configured with pull-up or pull-down resistors

Code from linux 6.5

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