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MYON II add display support for U-Boot

Mikhail Vanyulin requested to merge seco_lf_v2021.04_develop_myon2-imx8mm-add-video-support into seco_lf_v2021.04

This MR enables the video output support on Myon II board.

As it was requested by SECO to split the original Myon II MR into two parts:

  • generic support of Myon II board;
  • video support on Myon II board.
Message from email As we are in a hurry for the next release of CleaOS, we have decided to split video support for Myon2, for the moment, and keep it for the next release. Therefore, I'm asking you to split the MR in two, one for the general support of Myon2 and one for video support. The first one will be integrated as soon as possible, while the second one will take some more time, for analysis and testing.

In this MR, following adjustments are made by reworking/updating the code from SECO NE:

  • added a driver MIPI DSI bridge which will handle connected displays;
  • added a display detection routine;
  • added support for various MIPI displays;
  • ported patches for mxsfb driver;
  • adjusted clocks;
  • enabled video appropriate drivers in U-Boot config;
  • enabled support of splash screen/logo;
  • got rid of outdated routines in the code developed by SECO NE;
  • actualized README for U-Boot.

MR for base Myon II support: !152 (merged)

Edited by Mikhail Vanyulin

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