boards: devicetree: replace 'zephyr,touch' chosen property with the 'touch' DT alias

[JarmouniA]

zephyr,touch chosen property is currently used only by the samples/subsys/input/draw_touch_events and not used by any in-tree driver, subsystem, or module.
Hence, it is not justified to keep this chosen property as it only creates confusion and leads users to wrongly assume that setting this property produces some effect in Zephyr internals.

[faxe1008]

Hmm not sure about this one. I had in mind to add a feature inside of the gluecode to create a pointer input pseudo device, if a newly added Kconfig symbol LV_Z_POINTER_FROM_CHOSEN is set.

This would allow us to remove the lvgl input pointer from intree dts. As much as I like LVGL (given I am maintaining our fork 🙃) I kinda dislike the fact the device trees contain the pseudo devices by default. In consequence this makes LVGL a non-optional module (kind of) and this feels wrong to me.

[JarmouniA]

I had in mind to add a feature inside of the gluecode to create a pointer input pseudo device, if a newly added Kconfig symbol LV_Z_POINTER_FROM_CHOSEN is set.

Wouldn't that not work for multiple displays? :)

This would allow us to remove the lvgl input pointer from intree dts. As much as I like LVGL (given I am maintaining our fork 🙃) I kinda dislike the fact the device trees contain the pseudo devices by default.

As stated here #86815 (comment), I believe there isn't another practical way around it for the time being.

In consequence this makes LVGL a non-optional module (kind of) and this feels wrong to me.

I agree that's not ideal.

[JarmouniA]

@kartben @decsny would love to get your thoughts on this.

[sonarqubecloud]

Please retry analysis of this Pull-Request directly on SonarQube Cloud