dts: question about how to configure PIO used as i2c irq

On 10:53 Mon 15 Oct     , Bo Shen wrote:

Hi All,
  When moving atmel qt1070 linux driver with DT support. The atmel
qt1070 is an I2C device. I meet the following questions.

  The qt1070 DT node
  --<--------------
  qt1070: keyboard at 1b {
        compatible = "atmel,qt1070";
        reg = <0x1b>;
        interrupt-parent = <&pioA>;
        interrupts = <7 0x0>;
  };
  -->--------------

  DT will parse this node and map irq, the i2c_client->irq. This can
be used directly in atmel qt1070 driver. However, the PIO which used
as irq need configure as a PIO input. Now, we can not use
irq_to_gpio() function to convert irq to gpio. So, if we can not
configure this gpio.

  If we configure the pio in board-dt.c, I think this is not a good
place. For example, if the kernel image support multiplatform, while
on these platform, using different pio for qt1070, so this will
cause only one platform can use qt1070.

  So, for this question, how should I solve it? Would you please
give me some advice?

I already reply you in private 4 times

you have only 2 choice pass the gpio and manage in c
or configure the gpio as input in the xlate or map of the gpio drivers and the
mux via pinctrl

Best Regards,
J.