menuconfig ASPEED_RAM bool "ASPEED SDRAM configuration" depends on RAM && ARCH_ASPEED default ARCH_ASPEED help Configuration options for DDR SDRAM on ASPEED systems. RAM initialisation is always built in for the platform. This menu allows customisation of the configuration used. if ASPEED_RAM config ASPEED_DDR4_DUALX8 bool "Enable Dual X8 DDR4 die" depends on ASPEED_RAM help Say Y if dual X8 DDR4 die is used on the board. The ASPEED DDRM SRAM controller needs to know if the memory chip mounted on the board is dual x8 die or not, otherwise it may get the wrong size of the memory space. config ASPEED_BYPASS_SELFTEST depends on ASPEED_RAM depends on ASPEED_AST2600 bool "Bypass self test during initialization" help Say Y here to bypass DRAM self test to speed up the boot time. config ASPEED_ECC bool "ASPEED SDRAM ECC" depends on ASPEED_RAM depends on ASPEED_AST2600 help Enable SDRAM ECC function. This configures the SDRAM controller to perform error detection and correction, sacrificing 1/9th of the installed RAM to do so. config ASPEED_ECC_SIZE int "ECC size: 0=driver auto-caluated" depends on ASPEED_ECC default 0 help SDRAM size with the error correcting code enabled. The unit is in Megabytes. Noted that only the 8/9 of the configured size can be used by the system. The remaining 1/9 will be used by the ECC engine. If the size is set to 0, the sdram driver will calculate the SDRAM size and set the whole range be ECC enabled. choice prompt "AST2600 DDR4 target date rate" default ASPEED_DDR4_1600 depends on ASPEED_RAM depends on ASPEED_AST2600 config ASPEED_DDR4_400 bool "400Mbps" help select DDR4 target data rate at 400M config ASPEED_DDR4_800 bool "800Mbps" help select DDR4 target data rate at 800M config ASPEED_DDR4_1333 bool "1333Mbps" help select DDR4 target data rate at 1333M config ASPEED_DDR4_1600 bool "1600Mbps" help select DDR4 target data rate at 1600M endchoice endif # End of ASPEED_RAM