diff --git a/configs/aarch64_classic_defconfig b/configs/aarch64_classic_defconfig
index c6aee739..b4ed0aea 100644
--- a/configs/aarch64_classic_defconfig
+++ b/configs/aarch64_classic_defconfig
@@ -26,11 +26,14 @@ BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.5.6"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="${BR2_EXTERNAL_INFIX_PATH}/board/aarch64/linux_defconfig"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
-BR2_LINUX_KERNEL_INTREE_DTS_NAME="marvell/armada-3720-espressobin marvell/armada-3720-espressobin-emmc marvell/armada-3720-espressobin-v7 marvell/armada-3720-espressobin-v7-emmc marvell/armada-3720-espressobin-ultra marvell/cn9130-crb-A marvell/cn9130-crb-B sparx5_pcb135_emmc_no_psci"
-BR2_LINUX_KERNEL_CUSTOM_DTS_PATH="${BR2_EXTERNAL_INFIX_PATH}/board/aarch64/dts/microchip/sparx5_pcb135_emmc_no_psci.dts"
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="alder/alder marvell/armada-3720-espressobin marvell/armada-3720-espressobin-emmc marvell/armada-3720-espressobin-v7 marvell/armada-3720-espressobin-v7-emmc marvell/armada-3720-espressobin-ultra marvell/cn9130-crb-A marvell/cn9130-crb-B microchip/sparx5_pcb135_emmc_no_psci"
+BR2_LINUX_KERNEL_CUSTOM_DTS_OVERLAY="${BR2_EXTERNAL_INFIX_PATH}/board/aarch64/dts"
+BR2_LINUX_KERNEL_DTB_KEEP_DIRNAME=y
 BR2_LINUX_KERNEL_INSTALL_TARGET=y
 BR2_PACKAGE_BUSYBOX_CONFIG="${BR2_EXTERNAL_INFIX_PATH}/board/common/busybox_defconfig"
 BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
+BR2_PACKAGE_STRACE=y
+BR2_PACKAGE_STRESS_NG=y
 BR2_PACKAGE_JQ=y
 BR2_PACKAGE_MDIO_TOOLS=y
 BR2_PACKAGE_RNG_TOOLS=y
@@ -46,6 +49,7 @@ BR2_PACKAGE_AVAHI=y
 # BR2_PACKAGE_AVAHI_AUTOIPD is not set
 BR2_PACKAGE_AVAHI_DAEMON=y
 BR2_PACKAGE_AVAHI_DEFAULT_SERVICES=y
+BR2_PACKAGE_CHRONY=y
 BR2_PACKAGE_DHCPCD=y
 BR2_PACKAGE_DNSMASQ=y
 BR2_PACKAGE_DROPBEAR=y