wandboard pin:

gistfile1.txt

<aholler> there was a version of the rfkill-driver which printed a message
* RzR ([email protected]) has joined #wandboard
<aholler> +       /* GPIO for detecting C1 revision of Wandboard */
<aholler> +       wand_rev_gpio = of_get_named_gpio(pdev->dev.of_node, "wand-rev-gpio", 0);
<aholler> +       if (!gpio_is_valid(wand_rev_gpio)) {
<aholler> +
<aholler> +               dev_err(&pdev->dev, "incorrect Wandboard revision check gpio (%d)\n",
<aholler> +                               wand_rev_gpio);
<aholler> +               return -EINVAL;
<aholler> +       }
<aholler> wand-rev-gpio = <&gpio2 28 0>;