Problem: On AM62L, we added a mechanism to completely disable DPI PCLK and DPI data lines when DPI is not used. This feature didn't exist for other SoC and was added to AM62L. For more details, developer has tested the above logic and disabled DPI through the following register:

• DPI enable
  • DSS_VP1_CONTROL Register (address 3020 A004h, bit# 6)

Implications: If we don't set the above bit, DPI is still internally active and our 3.3V rail has significant power draw. We need to ensure that the above bit is set in Linux when DPI is not used or DSI is being used.developer has the power numbers and it's significant enough to make an impact.

Ask: Add logic in the driver to read the DT entry and set the enable/disable bits based on the DT entry(if DPI is used or not).

Fixed by:
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/?h=ti-linux-6.12.y&id=dbdccb2b5d79f2da96532d7490ae0ecba9aaf842