ARM: imx: Update DRAM timings with inline ECC on Data Modul i.MX8M Plus eDM SBC

2023-12-14T18:29:08Z

Import DRAM timings generated by the DDR tool 3.31 which introduce assorted tweaks to the DRAM controller settings. Furthermore, enable DBI to improve noise resilience of the DRAM bus by reducing the number of bit changes on the bus. Reduce the DRAM rate to 3600 MTps to remove all remaining correctable errors reported by EDAC . It is not entirely clear why the slightly faster setting does produce sporadic correctable errors, while this one does not, but this could be related to simpler PLL setting at 3600 MTps. Enable inline ECC which is necessary to detect ECC errors and collect statistics by the EDAC driver in Linux. This reduces the DRAM size by 64 MiB for each 512 MiB of DRAM, so for a 4 GiB device the available DRAM size becomes 3.5 GiB . Signed-off-by: Marek Vasut Reviewed-by: Fabio Estevam

ARM: imx: Factor common code out of Data Modul i.MX8M Mini eDM SBC

2023-01-30T22:23:02Z

Pull common.c into common subdirectory of the board file, since this code can be reused by other Data Modul SBCs. Drop the include of lpddr4_timing.h, which is unneeded. Signed-off-by: Marek Vasut

u-boot.git/board/data_modul/common, branch v2024.01

ARM: imx: Update DRAM timings with inline ECC on Data Modul i.MX8M Plus eDM SBC

ARM: imx: Factor common code out of Data Modul i.MX8M Mini eDM SBC