From 16736c2312bff2a35707c411c3dba91de86751a9 Mon Sep 17 00:00:00 2001
From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Date: Tue, 5 Apr 2022 16:14:27 +0200
Subject: [PATCH] doc: debug UART for RISC-V QEMU virt machine
Provide settings for enabling the debug UART of the virt machine on
RISC-V QEMU.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
---
doc/board/emulation/qemu-riscv.rst | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/doc/board/emulation/qemu-riscv.rst b/doc/board/emulation/qemu-riscv.rst
index ae998810c8..782f37251c 100644
--- a/doc/board/emulation/qemu-riscv.rst
+++ b/doc/board/emulation/qemu-riscv.rst
@@ -132,3 +132,13 @@ An attached disk can be emulated in RISC-V virt machine by adding::
-device ide-hd,drive=mydisk,bus=ahci.0
You will have to run 'scsi scan' to use it.
+
+Debug UART
+----------
+
+The following settings provide a debug UART for the virt machine::
+
+ CONFIG_DEBUG_UART=y
+ CONFIG_DEBUG_UART_NS16550=y
+ CONFIG_DEBUG_UART_BASE=0x10000000
+ CONFIG_DEBUG_UART_CLOCK=3686400
--
2.39.5