Add waveshare dtbo and bootconfig for 2.8inch RPi LCD (A)

.buildbot/openwrt/build.sh

@@ -146,8 +146,13 @@ make image PROFILE=${PROFILE} EXTRA_IMAGE_NAME="dualeth" \
      PACKAGES="${PACKAGES}" DISABLED_SERVICES="dropbear" FILES="files" || exit 1
 
 
-sed -i "s|,i2c_csi_dsi||g" ${BOOTSOURCE}/current.txt
 sed -i "s/CONFIG_TARGET_ROOTFS_PARTSIZE=.*/CONFIG_TARGET_ROOTFS_PARTSIZE=768/g" .config
+cp ${pwd}/overlays/waveshare32b.dtbo ${OVERLAYSOURCE}
+cp ${pwd}/overlays/waveshare.txt ${BOOTSOURCE}/current.txt
+cp ${OVERLAYSOURCE}/Makefile ${OVERLAYSOURCE}/Makefile.orig
+pushd ${KERNELSOURCE}
+git apply ${pwd}/patches/overlay-add-waveshare.patch
+popd
 
 make image PROFILE=${PROFILE} EXTRA_IMAGE_NAME="waveshare" \
      PACKAGES=" \
@@ -160,8 +165,10 @@ make image PROFILE=${PROFILE} EXTRA_IMAGE_NAME="waveshare" \
 
 cp ${pwd}/overlays/sensing.txt ${BOOTSOURCE}/current.txt
 cp ${pwd}/overlays/*.dtbo ${OVERLAYSOURCE}
+rm ${OVERLAYSOURCE}/waveshare32b.dtbo
 cp config.txt ${BOOTCONFIG}
 echo "include current.txt" >> ${BOOTCONFIG}
+cp ${OVERLAYSOURCE}/Makefile.orig ${OVERLAYSOURCE}/Makefile
 pushd ${KERNELSOURCE}
 git apply ${pwd}/patches/overlay-add.patch
 popd

overlays/waveshare.txt

@@ -0,0 +1,21 @@
+dtparam=i2c_vc=on
+dtoverlay=i2c-rtc,pcf85063a
+
+# Waveshare config-32 for 2.8inch RPi LCD (A)
+
+enable_uart=1
+# Enable audio (loads snd_bcm2835)
+dtparam=audio=on
+dtoverlay=waveshare32b:rotate=270
+# uncomment if hdmi display is not detected and composite is being output
+hdmi_force_hotplug=1
+hdmi_group=2
+hdmi_mode=1
+hdmi_mode=87
+hdmi_cvt 480 320 60 6 0 0 0
+hdmi_drive=2
+
+[all]
+
+[cm4]
+otg_mode=1

patches/overlay-add-waveshare.patch

@@ -0,0 +1,10 @@
+--- a/arch/arm64/boot/dts/overlays/Makefile	2023-07-04 16:38:37.955239160 +0300
++++ b/arch/arm64/boot/dts/overlays/Makefile	2023-07-04 16:40:54.058192471 +0300
+@@ -3,6 +3,7 @@
+ dtb-$(CONFIG_ARCH_BCM2835) += overlay_map.dtb
+ 
+ dtbo-$(CONFIG_ARCH_BCM2835) += \
++	waveshare32b.dtbo \
+ 	act-led.dtbo \
+ 	adafruit18.dtbo \
+ 	adau1977-adc.dtbo \