Jetson TX2: TCA9539 device tree reference for interrupt

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
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1

Hello,

We have developed a dual channel video card by help of jetson Tx-2 Eval board design. So for interrupt we are using TCA9539 GPIO Expander.

As I can see that in attached schematic U28.19 and U28.20 is configured as input and use for interrupt.

I downloaded L4T and tried to understand interrupt implementation in the device tree but did not found any reference for the same.

Please provided reference device tree source file where i can configure TCA9539 pins as input and used for interrupt purpose.

tca9539 schematic
tca9539 schematic1398×786 77.9 KB

Looking forward for your kind support.

Thanks and Regards,
Vikas Dwivedi

3

hello vikas.wfh,

please refer to Topic 154412 for an example of interrupt gpio.
thanks