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balena-os / balena-raspberrypi

Balena support for RaspberryPI boards
https://www.balena.io/os/
Apache License 2.0
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Enable PCA955x IO expander in kernel config #132

Closed shaunmulligan closed 7 years ago

shaunmulligan commented 7 years ago

Amber has a PCA955 IO expander module. This IC has support in linux kernel, so I think we just need to enable: GPIO_PCA953X and GPIO_PCA953X_IRQ

config GPIO_PCA953X
    tristate "PCA953x, PCA955x, TCA64xx, and MAX7310 I/O ports"
    depends on I2C
    help
      Say yes here to provide access to several register-oriented
      SMBus I/O expanders, made mostly by NXP or TI.  Compatible
      models include:

      4 bits:   pca9536, pca9537

      8 bits:   max7310, pca9534, pca9538, pca9554, pca9557,
            tca6408

      16 bits:  pca9535, pca9539, pca9555, tca6416

config GPIO_PCA953X_IRQ
    bool "Interrupt controller support for PCA953x"
    depends on GPIO_PCA953X=y
    help
      Say yes here to enable the pca953x to be used as an interrupt
      controller. It requires the driver to be built in the kernel.
floion commented 7 years ago

Fixed by https://github.com/resin-os/resin-raspberrypi/pull/136

floion commented 7 years ago

Reopening as the PR supposed to fix this had some typos. Should be now fixed by https://github.com/resin-os/resin-raspberrypi/pull/137

floion commented 7 years ago

Closing this item as https://github.com/resin-os/resin-raspberrypi/pull/137 was merged