# SPDX-License-Identifier: GPL-2.0-only # Generic Aspeed preram driver - Just enough UART initialisation code for # preram phase. config SUPERIO_ASPEED_COMMON_PRE_RAM bool default n config SUPERIO_ASPEED_HAS_UART_DELAY_WORKAROUND bool default n config SUPERIO_ASPEED_USE_UART_DELAY_WORKAROUND bool "Workaround for BMC serial console setup bug" depends on CONSOLE_SERIAL && SUPERIO_ASPEED_HAS_UART_DELAY_WORKAROUND default y help Some mainboards with an ASPEED BMC have scrambled console output in early boot phases because the serial output routing is not set up fast enough by the BMC. By enabling this a delay of 500ms gets added before setting up the console and before any console output gets printed. Note: this problem may disappear with future BMC firmware versions. Another approach is using a different BMC firmware like OpenBMC, u-bmc, ...