Quote:
Originally Posted by DomesticExtremis
So the task is to figure out what is causing this error and preventing the boting of my ereader.
It is plausible that a broken and shorted substrate could pull down a voltage somewhere and cause the error seen, so we cannot eliminate that fully yet. However, it is far more likely that either the chip itself is faulty or that some support component or power supply circuitry for it is faulty
|
The PMIC seems fine (it is already initialized in u-boot) and all it does is fault handling using a
https://en.wikipedia.org/wiki/Undervoltage-lockout threshold.
If you have the equipment you can measure PMIC Vin and see if it is above minimum (3.0v).
What I'm not able to figure out is the other error (this one on the EPDC framebuffer driver):
Code:
epdfbdc_set_width_height(1439): new DCSize(3342336)>original DCSize(3317760) !
I know
it is tagged as an error in kernel code but I'm not sure if that is the cause, a consequence of another circuitry error or totally unrelated.
I'm wondering what happens if you boot your device without the ribbon cable connected to the screen (do it at your own risk, ofc).