08-19-2023, 04:26 AM
@lupyuen I am still following the nicely documented steps for PP display, thank you again! I came across RSB/PMIC requirements for the power. I started to implement RSB, but from another document it sounds like it should have a clock activated. I dont see where that is done, which got me wondering if the pmic/rsb is already somehow set up before we reach the NuttX image at boot time? ie currently I am following the original build scripts/steps we discussed, and manually copy the new Image.gz to my SD card, but there are other files already there. I think when I tried something this low level on the Rpi4 there was also a bit of assembly to bring the chip up to the point it could run the loaded program. Is that a part of NuttX, or built into the PP? I assume there must be some code somewhere that is reading the SD card... How is it working please?