[Bug 1876265] Re: Ubuntu Raspberry dpi18 display

[Dave Jones]

We removed the usercfg.txt split back in groovy, and have had no further
complaints of dtoverlays not functioning. Is this still an issue? I'll
mark this incomplete for now just in case anyone's still experiencing
this (unfortunately I don't have a DPI display to replicate this
specifically).

** Changed in: u-boot (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1876265

Title:
  Ubuntu Raspberry dpi18 display

Status in u-boot package in Ubuntu:
  Incomplete

Bug description:
  I installed the Ubuntu 20.04 Raspberry version

  I tried to modify firmware/usrconfig.txt. Always the same result...

  After modifiying the desired configuration and reboot, the RPI4 enters
  a loop trying to boot: the color image blinks, and immediately turns
  off. Then boot again, a blink of the colored image, turn off... and so
  on.

  
  dtoverlay=i2c-gpio,bus=3,i2c_gpio_sda=23,i2c_gpio_scl=24,i2c_gpio_delay_us=2

  # DPI Video Setup
  dtoverlay=dpi18
  overscan_left=0
  overscan_right=0
  overscan_top=0
  overscan_bottom=0
  framebuffer_width=854
  framebuffer_height=480
  enable_dpi_lcd=1
  display_default_lcd=1
  dpi_group=2
  dpi_mode=87

  dpi_output_format=458773
  hdmi_timings=854 0 14 4 12 480 0 2 3 9 0 0 0 60 0 32000000 3

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