fix(stm32mp1): deconfigure UART RX pins

Those pins are configured by ROM code, for serial boot use cases.
Their configs are reset if the boot is done on UART, but not on USB.
This should then be done in TF-A. This has to be done after clock
init, and before console is configured.

Signed-off-by: Yann Gautier <>
Change-Id: I29a9694e25fcf1665360dd71f73937f769c43b52
3 files changed