diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 97eed808..c8811a3c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -111,43 +111,12 @@ jobs:
                 make -j$(nproc)
                 find . -name "u-boot-with-spl.bin" | xargs -I{} cp -av {} ${GITHUB_WORKSPACE}/output/u-boot-with-spl-meles-4g.bin
 
-                # mainline support
-                make clean
-                make light_lpi4a_defconfig
-                sed -i 's#thead/light-lpi4a.dtb#thead/th1520-lichee-pi-4a.dtb#' .config
-                make -j$(nproc)
-                find . -name "u-boot-with-spl.bin" | xargs -I{} cp -av {} ${GITHUB_WORKSPACE}/output/u-boot-with-spl-lpi4a-main.bin
-
-                make clean
-                make light_lpi4a_16g_defconfig
-                sed -i 's#thead/light-lpi4a-16gb.dtb#thead/th1520-lichee-pi-4a-16g.dtb#' .config
-                make -j$(nproc)
-                find . -name "u-boot-with-spl.bin" | xargs -I{} cp -av {} ${GITHUB_WORKSPACE}/output/u-boot-with-spl-lpi4a-16g-main.bin
-
-                make clean
-                make light_lpi4a_cluster_defconfig
-                sed -i 's#thead/light-lpi4a-cluster.dtb#thead/th1520-lichee-cluster-4a.dtb#' .config
-                make -j$(nproc)
-                find . -name "u-boot-with-spl.bin" | xargs -I{} cp -av {} ${GITHUB_WORKSPACE}/output/u-boot-with-spl-lc4a-main.bin
-
-                make clean
-                make light_lpi4a_cluster_16g_defconfig
-                sed -i 's#thead/light-lpi4a-cluster-16gb.dtb#thead/th1520-lichee-cluster-4a-16g.dtb#' .config
-                make -j$(nproc)
-                find . -name "u-boot-with-spl.bin" | xargs -I{} cp -av {} ${GITHUB_WORKSPACE}/output/u-boot-with-spl-lc4a-16g-main.bin
-
                 # 8g emmc support
                 sed -i 's/name=swap,size=4096MiB,type=swap/name=swap,size=2MiB,type=swap/' include/configs/light-c910.h
                 make clean
                 make light_lpi4a_defconfig
                 make -j$(nproc)
                 find . -name "u-boot-with-spl.bin" | xargs -I{} cp -av {} ${GITHUB_WORKSPACE}/output/u-boot-with-spl-lpi4a_8gemmc.bin
-
-                make clean
-                make light_lpi4a_defconfig
-                sed -i 's#thead/light-lpi4a.dtb#thead/th1520-lichee-pi-4a.dtb#' .config
-                make -j$(nproc)
-                find . -name "u-boot-with-spl.bin" | xargs -I{} cp -av {} ${GITHUB_WORKSPACE}/output/u-boot-with-spl-lpi4a-main_8gemmc.bin
               popd
               tree ${GITHUB_WORKSPACE}/output