diff --git a/meta-raspberrypi/docs/extra-build-config.md b/meta-raspberrypi/docs/extra-build-config.md
index 128753d..5786f3a 100644
--- a/meta-raspberrypi/docs/extra-build-config.md
+++ b/meta-raspberrypi/docs/extra-build-config.md
@@ -155,6 +155,16 @@
 be overridden to select the exact kernel image type (eg. zImage) and u-boot
 command (eg. bootz) to be used.
 
+To operate correctly, U-Boot requires `enable_uart=1` in `config.txt` file for
+the following boards:
+* Raspberry Pi Zero W
+* Raspberry Pi 3 32-bit
+* Raspberry Pi 3 64-bit
+* Raspberry Pi 4 32-bit
+* Raspberry Pi 4 64-bit
+It means that, for those boards, `RPI_USE_U_BOOT = "1"` is not compatible with
+`ENABLE_UART = "0"`.
+
 ## Image with Initramfs
 
 To build an initramfs image:
diff --git a/meta-raspberrypi/recipes-bsp/bootfiles/rpi-config_git.bb b/meta-raspberrypi/recipes-bsp/bootfiles/rpi-config_git.bb
index 22fce77..8b7fbb8 100644
--- a/meta-raspberrypi/recipes-bsp/bootfiles/rpi-config_git.bb
+++ b/meta-raspberrypi/recipes-bsp/bootfiles/rpi-config_git.bb
@@ -178,13 +178,27 @@
     fi
 
     # UART support
-    if [ "${ENABLE_UART}" = "1" ] || [ "${ENABLE_UART}" = "0" ] ; then
+    if [ "${ENABLE_UART}" = "1" ] || [ "${ENABLE_UART}" = "0" ]; then
         echo "# Enable UART" >>$CONFIG
         echo "enable_uart=${ENABLE_UART}" >>$CONFIG
     elif [ -n "${ENABLE_UART}" ]; then
         bbfatal "Invalid value for ENABLE_UART [${ENABLE_UART}]. The value for ENABLE_UART can be 0 or 1."
     fi
 
+    # U-Boot requires "enable_uart=1" for various boards to operate correctly
+    # cf https://source.denx.de/u-boot/u-boot/-/blob/v2023.04/arch/arm/mach-bcm283x/Kconfig?ref_type=tags#L65
+    if [ "${RPI_USE_U_BOOT}" = "1" ] && [ "${ENABLE_UART}" != "1" ]; then
+        case "${UBOOT_MACHINE}" in
+            rpi_0_w_defconfig|rpi_3_32b_config|rpi_4_32b_config|rpi_arm64_config)
+                if [ "${ENABLE_UART}" = "0" ]; then
+                    bbfatal "Invalid configuration: RPI_USE_U_BOOT requires to enable the UART in config.txt for ${MACHINE}"
+                fi
+                echo "# U-Boot requires UART" >>$CONFIG
+                echo "enable_uart=1" >>$CONFIG
+                ;;
+        esac
+    fi
+
     # Infrared support
     if [ "${ENABLE_IR}" = "1" ]; then
         echo "# Enable infrared" >>$CONFIG
diff --git a/meta-raspberrypi/recipes-core/udev/udev-rules-rpi.bb b/meta-raspberrypi/recipes-core/udev/udev-rules-rpi.bb
index 42cfcdd..3ae4385 100644
--- a/meta-raspberrypi/recipes-core/udev/udev-rules-rpi.bb
+++ b/meta-raspberrypi/recipes-core/udev/udev-rules-rpi.bb
@@ -3,16 +3,17 @@
 LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
 
 SRC_URI = " \
-	file://99-com.rules \
+	git://github.com/RPi-Distro/raspberrypi-sys-mods;protocol=https;branch=master \
 	file://can.rules \
 	"
+SRCREV = "5ce3ef2b7f377c23fea440ca9df0e30f3f8447cf"
 
-S = "${WORKDIR}"
+S = "${WORKDIR}/git"
 
 INHIBIT_DEFAULT_DEPS = "1"
 
 do_install () {
     install -d ${D}${sysconfdir}/udev/rules.d
-    install -m 0644 ${WORKDIR}/99-com.rules ${D}${sysconfdir}/udev/rules.d/
+    install -m 0644 ${S}/etc.armhf/udev/rules.d/99-com.rules ${D}${sysconfdir}/udev/rules.d/
     install -m 0644 ${WORKDIR}/can.rules ${D}${sysconfdir}/udev/rules.d/
 }
diff --git a/meta-raspberrypi/recipes-core/udev/udev-rules-rpi/99-com.rules b/meta-raspberrypi/recipes-core/udev/udev-rules-rpi/99-com.rules
deleted file mode 100644
index ddd1e17..0000000
--- a/meta-raspberrypi/recipes-core/udev/udev-rules-rpi/99-com.rules
+++ /dev/null
@@ -1,21 +0,0 @@
-KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
-	ALIASES=/proc/device-tree/aliases; \
-	if cmp -s $$ALIASES/uart0 $$ALIASES/serial0; then \
-		echo 0;\
-	elif cmp -s $$ALIASES/uart0 $$ALIASES/serial1; then \
-		echo 1; \
-	else \
-		exit 1; \
-	fi\
-'", SYMLINK+="serial%c"
-
-KERNEL=="ttyS0", PROGRAM="/bin/sh -c '\
-	ALIASES=/proc/device-tree/aliases; \
-	if cmp -s $$ALIASES/uart1 $$ALIASES/serial0; then \
-		echo 0; \
-	elif cmp -s $$ALIASES/uart1 $$ALIASES/serial1; then \
-		echo 1; \
-	else \
-		exit 1; \
-	fi \
-'", SYMLINK+="serial%c"