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To use the debug UART we have to call debug_uart_init() in the SPL. Do so as soon as possible. As an example, here is how you can use it on a LS1028A SoC: CONFIG_DEBUG_UART=y CONFIG_DEBUG_UART_BASE=0x21c0500 CONFIG_DEBUG_UART_CLOCK=200000000 Signed-off-by: Michael Walle <michael@walle.cc> Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
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