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Issue #2322
openDisplay panel "LDO25" regulator using 2.8v instead of 3.3v
Start date:
10/07/2022
Due date:
% Done:
0%
Estimated time:
Resolution:
Device:
Galaxy S 3 (I9300), Galaxy S 3 4G (I9305)
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Added by Denis 'GNUtoo' Carikli over 2 years ago. Updated over 2 years ago.
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I was notified on IRC that the LCD regulator is too low:
14:57 < jack_kekzoz[m]> GNUtoo: I think I found an error in the galaxy-s3 dtsi. Ldo25 should be 3.3V not 2.8V 14:58 < jack_kekzoz[m]> See https://github.com/LineageOS/android_kernel_samsung_smdk4412/blob/cm-14.1/arch/arm/mach-exynos/midas-power.c#L410-L473
Once the bug is fixed in Replicant 11, the fix will then need to be upstreamed, so we will should them move this bugreport to the upstream subproject.
Maybe it's also related to the graphics glitch we got before.
I think the voltage was correct for Trats2, which is where the dtsi data for midas devices was forked from. The midas-power.c board file downstream has 2.8V for ldo25 for the "redwood" device, which is apparently another Exynos4412 Tizen device, GT-I8800.
Jack K