[bootlin/training-materials updates] master: Kernel labs: highlight to power the board through the PC (8a4828c2)

[Michael Opdenacker]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/8a4828c23c21ab3d2d3e0babf5aef1915b4ed835

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commit 8a4828c23c21ab3d2d3e0babf5aef1915b4ed835
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Thu Mar 31 16:50:46 2022 +0200

    Kernel labs: highlight to power the board through the PC
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


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8a4828c23c21ab3d2d3e0babf5aef1915b4ed835
 labs/kernel-board-setup/kernel-board-setup.tex | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/labs/kernel-board-setup/kernel-board-setup.tex b/labs/kernel-board-setup/kernel-board-setup.tex
index 9fbf0110..f10ffd11 100644
--- a/labs/kernel-board-setup/kernel-board-setup.tex
+++ b/labs/kernel-board-setup/kernel-board-setup.tex
@@ -144,11 +144,15 @@ board download files, such as the kernel image and Device Tree Binary
 (DTB), using the TFTP protocol through a network connection.
 
 As this course supports both the BeagleBone Black and BeagleBone Black
-Wireless boards, we're keeping things simple by using Ethernet of USB
+Wireless boards, we're keeping things simple by using Ethernet over USB
 device as this works for both boards (as the Wireless board has no
 native Ethernet port). So, networking will work through the USB device
 cable that is already used to power up the board.
 
+{\bf Caution}: For the following to work, make sure that your board
+is powered by a USB port on your PC. Otherwise, networking over USB
+cannot work.
+
 \section{Network configuration on the target}
 Now, let's configure networking in U-Boot: