Activity
From 07/07/2026 to 08/05/2026
07/22/2026
- HW 02:55 PM Software Development: RE: AM62A: Getting the Splash Screen to Appear Earlier
- I explicitly set CONFIG_DRM_FBDEV_EMULATION=n and that was what worked to get rid of the trash since the display does not reset until a little bit into the kernel starting. At this point it seems more an issue with the way the panel driv...
- JC 01:24 PM Software Development: RE: AM62A: Getting the Splash Screen to Appear Earlier
- I wonder if the biggest piece were missing is the disabling CONFIG_DRM_FBDEV_EMULATION step they highlight.
- HW 12:45 PM Software Development: RE: AM62A: Getting the Splash Screen to Appear Earlier
- The display after U-boot resets so the splash screen right now does not persist and the display does not come back on until just before the display manager starts.
The framebuffer handoff however seems to work. Adding the framebuffer ...
07/21/2026
- JC 07:54 PM Software Development: RE: AM62A: Getting the Splash Screen to Appear Earlier
- How is linux framebuffer hand off going?
07/10/2026
- JC 08:15 PM Software Development: RE: AM62A: Getting the Splash Screen to Appear Earlier
- Okay good to hear.
- HW 08:05 PM Software Development: RE: AM62A: Getting the Splash Screen to Appear Earlier
- The changes work great, got it working with our display no problem!
I see what you mean with the scrambled splashscreen, I was going to start following the documentation for handing the frame buffer off to Linux and see what happens w... - JC 04:06 PM Software Development: RE: Getting the Splash Screen to Appear Earlier
- https://support.criticallink.com/gitweb/?p=u-boot-ti.git;a=shortlog;h=refs/heads/2025.01-am62a-hdmi-splash
Here are my changes so far, pushed to a test branch, please test it and let me know.
This loads a splash.bmp.gz from the boo...
07/09/2026
- JC 08:01 PM Software Development: RE: Getting the Splash Screen to Appear Earlier
- I have made some good progress on this today. I've got to do some cleanup but i'll try to push a test branch for you to test. Note i'm using our devkit with the hdmi output but I believe switching to your touchscreen should be straight...
- JC 01:27 PM Software Development: RE: Getting the Splash Screen to Appear Earlier
- Note one thing I ran into is the ti-dss driver in 2025 u-boot, doesn't currently support switching to video port 1 (where the 62a connected the VOUT pins). There is a upstream patch to add this support so I'm testing if it can be backpo...
- HW 12:54 PM Software Development: RE: Getting the Splash Screen to Appear Earlier
- I am also attaching the Linux dts, I know the bindings are a little different for the u-boot drivers so I tried to match as closely as possible for the panel and backlight nodes
07/08/2026
- JC 07:50 PM Software Development: RE: Getting the Splash Screen to Appear Earlier
- Can you share the changes you've made so far as a patch/diff?
- HW 06:57 PM Software Development: RE: Getting the Splash Screen to Appear Earlier
- I was able to create nodes in the u-boot device tree for my panel, pwm-backlight, and the video driver (dss).
In drivers/video/tidss/tidss_drv.c added the compatible line for the am62a7 so the tidss driver can bind properly
07/07/2026
- JC 01:32 PM Software Development: RE: Getting the Splash Screen to Appear Earlier
- Our som.c is mostly a copy of their evm.c
https://support.criticallink.com/gitweb/?p=u-boot-ti.git;a=blob;f=board/cl/mitysom-62x/som.c;h=a4ba0e88f4c3fc4f537efc095bf9e6069109ecd5;hb=refs/heads/mitysom-u-boot-2025.01#l199 - HW 01:07 PM Software Development: RE: Getting the Splash Screen to Appear Earlier
- Just for some clarification, the documentation says to modify board/ti/am62ax/evm.c to change the SPL init function and enable video even in custom boards based on the am62ax SoC. Is all board configuration contained within the board/cl ...