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doc: riscv: debug UART for MAIX

Provide the required settings for the debug UART.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Heinrich Schuchardt 3 년 전
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  1. 10 0
      doc/board/sipeed/maix.rst

+ 10 - 0
doc/board/sipeed/maix.rst

@@ -262,6 +262,16 @@ Boot Sequence
    stage.
 8. The boot hart jumps to ``0x80000000``.
 
+Debug UART
+^^^^^^^^^^
+
+The Debug UART is provided with the following settings::
+
+    CONFIG_DEBUG_UART=y
+    CONFIG_DEBUG_UART_SIFIVE=y
+    CONFIG_DEBUG_UART_BASE=0x38000000
+    CONFIG_DEBUG_UART_CLOCK=390000000
+
 Resetting the board
 ^^^^^^^^^^^^^^^^^^^