Hello Nick, On 08/15/2014 06:08 PM, Nick Dyer wrote: >> >> Any comments on this? I would really appreciate if you can expand on how >> this DT property is supposed to be used so I can re-spin the atmel support >> patch for Peach boards. > > The below patch improves the documentation for the gpio-property. Stephen > Warren has a good example here: > https://github.com/swarren/linux-tegra/commit/09789801 > > trackpad@4b { > compatible = "atmel,maxtouch"; > reg = <0x4b>; > interrupt-parent = <&gpio>; > interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>; > linux,gpio-keymap = <0 0 0 BTN_LEFT>; > }; > > This maps BTN_LEFT to the 4th bit of the T19 message. I haven't looked up > what GPIO number that corresponds to on the mXT224SL that he has, it varies > with the particular maXTouch device you have. > > Hope this helps. > Thanks a lot for the patch and the pointer to Stephen's DTS. I'll do some experimentation then to figure out the right values since I don't have proper documentation. Fortunately the Chrome OS 3.8 downstream driver works on -next so I can use evdev to compare if both drivers behave the same. > Signed-off-by: Nick Dyer <nick.dyer@xxxxxxxxxxx> Best regards, Javier -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
