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What drivers or bootloader code in the AM335x WEC 7 BSP uses the MCASP0 pins?

The problem I have is that for our internal circuit testing, we are changing all our used Andromeda pins to GPIO pins and we excluded our custom drivers that were able to mux this pin as PWM, ECAP and QEP modes. But somehow, when muxed as GPIO (mode 7), these pins are unable to toggle. So my doubt is that some other internal drivers are overriding my muxing. But this behavior could have been masked because our additional drivers are able to override those settings.

Any ideas or experience you guy have that are similar to this?