Boot time labs: use /delete-node/ instead of manual edit of dtsi

Much cleaner! Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
bootlin · Jun 21, 2021 · 31e055f · 31e055f
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diff --git a/lab-data/boot-time/kernel/data/am335x-boneblack-lcd43.dts b/lab-data/boot-time/kernel/data/am335x-boneblack-lcd43.dts
@@ -101,6 +101,14 @@
 			};
 };
 
+&lcdc {
+			/delete-node/ port;
+};
+
+&tda19988 {
+			/delete-node/ ports;
+};
+
 &epwmss2 {
 			/* Parent to ecap */
 			status = "okay";

diff --git a/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex b/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex
@@ -71,15 +71,6 @@ \section{Adding support for the 4.3" LCD cape}
 You now have to modify \code{arch/arm/boot/dts/Makefile} so that
 the new DTS file gets compiled too.
 
-There is another thing you need to do to make the Linux framebuffer work
-on the LCD display, avoiding conflicts with HDMI:
-
-Open \code{arch/arm/boot/dts/am335x-boneblack-common.dtsi} and remove:
-\begin{itemize}
-\item The \code{port} subnode under the \code{lcdc} node.
-\item The \code{ports} subnode under the \code{tda19988} node.
-\end{itemize}
-
 \section{Configuring the Linux kernel}
 
 First, lets pick the default kernel configuration for boards with a TI