We have attached ar1021 i2c touch controller to our product which uses Kontron SMARC Soc. How can I define it in device tree?
ar1021 i2c touch controller's interrupt line is connected to the pin P109 which is defined in 'SMARC sMAX6i' manual as
Pin
| Signal
| Direction
| Termination
| Type/tol
| Controller
| Controller PIn name
| Port dl
| Port solo
| iomux instance
|
|---|
| P109 | GPIO1 / CAM1_PWR# | Bi-Dir | PU-470k | CMOS / VDD_IO | iMX6 | EIM_DA1 | GPIO3_IO01 | GPIO3_IO01 | ALT5 / ALT5 |
I have tried define ar1021 in device tree as below. Driver loads proberly but interrupt callback function is never called.
| | ar1021@4D { |
| | | |
| | | compatible = "microchip,ar1021-i2c"; | | | | |
| | | |
| | | reg = <0x4D>; |
| | | |
| | | interrupt-parent = <&gpio3>; |
| | | |
| | | interrupts = <1 IRQ_TYPE_EDGE_FALLING>; |
| | | |
| | | wakeup-gpios = <&gpio3 1 IRQ_TYPE_LEVEL_HIGH>; | | | |
};
Problem seems to be that interrupt for PIN P109 is not defined correctly. Any ideas?
