[bootlin/training-materials updates] master: Boot time labs: need to use a power supply, not USB (a5c434fd)

[Michael Opdenacker]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/a5c434fdac009ddf0e0f558a5fece59d309e7209

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commit a5c434fdac009ddf0e0f558a5fece59d309e7209
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Tue Oct 26 13:21:18 2021 +0200

    Boot time labs: need to use a power supply, not USB
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


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a5c434fdac009ddf0e0f558a5fece59d309e7209
 labs/boot-time-board-setup/boot-time-board-setup.tex | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/labs/boot-time-board-setup/boot-time-board-setup.tex b/labs/boot-time-board-setup/boot-time-board-setup.tex
index a6efdbf9..2443afd9 100644
--- a/labs/boot-time-board-setup/boot-time-board-setup.tex
+++ b/labs/boot-time-board-setup/boot-time-board-setup.tex
@@ -88,10 +88,11 @@ you wish to exit \code{picocom}, press \code{[Ctrl][a]} followed by
 There should be nothing on the serial line so far, as the board is not
 powered up yet.
 
-It is now time to power up your board by plugging in the mini-USB
-(BeagleBone Black case) or micro-USB (BeagleBone Black Wireless case)
-cable supplied by your instructor (with your PC or a USB power supply at the
-other end of the cable).
+It is now time to power up your board to its power supply through
+the 5.5mm barrel jack connector (see our shopping list slide).
+This is important instead of using a USB device power cable.
+Otherwise you may not have enough power to drive the LCD cape
+and your board may not boot any more.
 
 See what messages you get on the serial line. You should see U-boot
 start on the serial line.