MIMXRT1160_EVK touch screen not working

[RafalHalik]

MIMXRT1160_EVK touch screen not working

[DerekSnell]

I also prepped this draft PR #75294 to enable the display shields for the mimxrt1160_evk. After #75193 merges, I will submit it. But since the merge window is currently closed for the v3.7.0 release, likely that PR will not merge until after the release.

[DerekSnell]

Hi @RafalHalik ,
Thank you for sharing all the details. I think I see the issue. Your workaround to fix this involved setting the pinmux settings. Looking at the pinctrl settings, I think there is a typo. Can you try correcting this line in mimxrt1160_evk.dtsi? Set to pinmux_lpi2c5

&lpi2c5 {
	status = "okay";
        pinctrl-0 = <&pinmux_lpi2c1>;   // fix this line

I submitted #75193 to update this. Please confirm if this resolves the issue. Thanks

[RafalHalik]

Hey @DerekSnell ,
Thanks for the quick reply! Great spot did not even notice this before. Unfortunately this change does not fix the issue, I still need to set up the i2c line manually.

[RafalHalik]

I have also checked i2c bus using the i2c_shell commands without my additional code but with the typo fix. No devices are found on the i2c@40c34000 bus further making me think the setup commands are omitted by the init phase of zephyr:

However with the changes I mentioned previously I can see 2 devices.

[DerekSnell]

Thanks, @RafalHalik

I found a rk055hdmipi4ma0 shield, and this time replicated the issue as you reported it. The problem was the input buffers for the LPI2C5 pads were not enabled in the MIMXRT1160-EVK pinctrl.

I updated #75193. I tested samples/subsys/display/lvgl, and the touch controller works now.

Thank you for reporting this