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-rw-r--r--doc/board/emulation/qemu-arm.rst10
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/board/emulation/qemu-arm.rst b/doc/board/emulation/qemu-arm.rst
index ca751d4af4..8d7fda10f1 100644
--- a/doc/board/emulation/qemu-arm.rst
+++ b/doc/board/emulation/qemu-arm.rst
@@ -80,3 +80,13 @@ can be enabled with the following command line parameters:
-drive if=none,file=disk.img,id=mydisk -device nvme,drive=mydisk,serial=foo
These have been tested in QEMU 2.9.0 but should work in at least 2.5.0 as well.
+
+Debug UART
+----------
+
+The debug UART on the ARM virt board uses these settings::
+
+ CONFIG_DEBUG_UART=y
+ CONFIG_DEBUG_UART_PL010=y
+ CONFIG_DEBUG_UART_BASE=0x9000000
+ CONFIG_DEBUG_UART_CLOCK=0