Hi Robert, On Mon, Jun 24, 2019 at 4:44 AM Robert Chiras <robert.chiras@xxxxxxx> wrote: > > You did not handle the "power" regulator. > There is no need for a power regulator. I am sure the panel requires power to be applied so that it can work :-) > > Can't you simply remove them? > The reset gpio pin is shared between the DSI display controller and Looking at the imx8mq-evk schematics it is not clear for me what pin in shared between the OLED display and touch screen. Could you please clarify which pin you are referring to? > touch controller, both found on the same panel. Since, the touch driver > also acceses this gpio pin, in some cases the display can be put to > sleep, but the touch is still active. This is why, during suspend I > release the gpio resource, and I have to take it back in resume. > Without this release/acquire mechanism during suspend/resume, stress- > tests showed some failures: the resume freezes completly. Looking at the imx8mq-evk dts from the vendor tree I see that the touchscreen is not supported in mainline yet. Maybe there is a better way to solve this, so what if you don't introduce the suspend/resume hooks for now and then we revisit this after the touchscreen driver is added?
