reproduce (this is a W=1 build):
        git checkout ea01f446f0682a5e7bd7a275889a890b7e0c6e02
        b4 shazam https://lore.kernel.org/r/20261008-aspeed_pcie_phy-v1-2-96764937aef0@aspeedtech.com

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=csky olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=csky SHELL=/bin/bash drivers/phy/aspeed/