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msm8953-mainline / linux

Linux mainline kernel with WIP patches for msm8953 devices
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Xiaomi-daisy: Ilitek ili7807-fdhplus display not working #23

Closed apolemus closed 2 years ago

apolemus commented 2 years ago

With yesterday built kernel from here the ili7807-fhdplus display on my Xiaomi Mi A2 Lite (daisy) doesn’t come up (except for some blue artefacts). I’m using lk2nd and am able to ssh into the device (I’ll add the dmesg log after boot). Some time ago I already tested out the patches of #21 with the same outcome. Without the patches, it is not booting until ssh.

Am I missing something or is this still WIP?

dmesg_daisy_20211113.log

alikates commented 2 years ago

Hello, I think the kernel is okay and the issues is with lk2nd. The ili7807-fhdplus panel was tested with a similar driver for the fhd variant before creating the fhdplus variant driver. I forgot to change it in lk2nd. So I'm gonna open a PR to lk2nd, but if you want it soon I'm writing a quick fix to my personal fork here https://gitlab.com/alikates/lk2nd

apolemus commented 2 years ago

Hello, thanks a lot for your time! I tried your lk2nd ‘daisy’ tree with last commit 2019f490 but the issue persists. I also tried to change qcom,mdss_dsi_ili7807_fhd_video to qcom,mdss_dsi_ili7807_fhdplus_video (as lk2nd tells it to me) in the msm8953-xiaomi-daisy.dts because that seemed suspicious to me. But that also doesn’t solve it.

I am willing to test anything. I bought the phone for testing purposes. But am new to all this so can’t really help actively yet.

alikates commented 2 years ago

Okay, i have cleaned up a bit the daisy branch, you should do a git fetch and git reset to the remote branch because i fixed the old commit and had to force-push. Also the goal here is to not get this lines:

[    2.219795] msm 1a00000.mdss: bound 1a01000.mdp (ops mdp5_ops)
[    2.226668] msm_dsi_manager_register: failed to register mipi dsi host for DSI 0: -517

They probably mean that the kernel is not finding the panel because the name is wrong or maybe the panel selection is not working properly.

Kiciuk commented 2 years ago

Thats probe defer. Its waiting for something. backlight/supplies it also rekt cat /sys/kernel/debug/devices_deferred

apolemus commented 2 years ago

That gives:

# cat /sys/kernel/debug/devices_deferred
1a01000.mdp 
c051000.sound-card  
200f000.spmi:pmic@0:temp-alarm@2400
apolemus commented 2 years ago

I’m really sorry! Obviously I forgot to actually compile the panel driver. But at least the lk2nd issue got addressed. But the touchscreen probe still fails:

edt_ft5x06 1-0038: supply iovcc not found, using dummy regulator
...
edt_ft5x06 1-0038: touchscreen probe failed

Sorry again!