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We are using AM4378 Process for our HMI Board, We have plan to configure DSS_OUT for 24 bit So that it can support both 18 bit Displays and also 24 bit Displays. Main intention of this approach is avoid any future software change. If 18 bit LCD is connected then DSS OUT_0 & DSS OUT_1 will be dummy for Blue color, Similar 2 bits will be dummy for Green and also for Red. Before we implement this change, we would like to hear from users or TI if this configuration was tried earlier and was it successful?
Regards,
Balaji A
Yes, this is the correct configuration. When connecting an 18-bit display you simply do not connect the 2 least senior bits of each color.