MCP2515 CAN device on VOXL2 J10 SPI + gpio

Paul Handrigan

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

Alex Kushleyev

@Paul-Handrigan , please see this post, depending on which board you have (M0054 or M0154), it may not be possible to use GPIO 46 as input :

Issue Reading GPIO 1146 (Pin 6 on J10) on VOXL2

Hi, I'm trying to read values from GPIO 1146 (Pin 6 on J10), but the value always remains the same regardless of whether I connect it to 3.3V (high) or 0V (l...

ModalAI Forum (forum.modalai.com)