I have added a MCP2515 CAN controller to the SPI bus on J10 using GPIO_46/CS1 as the interrupt gpio pin. I have added the in tree driver into the kernel. I have requested gpio 46 as the interrupt pin, but it is not taking effect. However, when it does request the gpio, you can see contention on the pin.
What do I need to do in order to configure GPIO_46 as an input gpio to use as an interrupt for this device? Below is the DT node that I am using.
+&qupv3_se14_spi {
-
status = "ok"; -
can_spi: can@0 { -
compatible = "microchip,mcp2515"; -
reg = <0>; -
interrupt-parent = <&tlmm>; -
interrupts = <46 0x8>; -
clocks = <&clk12M>; -
spi-max-frequency = <8000000>; -
};
+};
Thanks in advance!
Paul