Enabling ODT is required to suppress reflection of the data signal on DDR write operation. SolidRun Armada 388 SoM only connects M_ODT[0] even when both chip-select are used.
Enable ODT[0] for both chip-select during write only. Original work by Baruch Siach [1] and Chris Packham [2]. [1] https://github.com/SolidRun/u-boot-armada38x/commit/aba763a611e69fbcc4e229659da9d84f16b39814 [2] https://github.com/SolidRun/u-boot-armada38x/commit/dbaf09590df9add19e738d2de03c0f2d0d8f5433 Signed-off-by: Josua Mayer <jo...@solid-run.com> --- board/solidrun/clearfog/clearfog.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/board/solidrun/clearfog/clearfog.c b/board/solidrun/clearfog/clearfog.c index 2dbd071abd9f29cee97fb813a67d0190a620bd32..67b60d2e7b43331383b6a01b13693b29b21129be 100644 --- a/board/solidrun/clearfog/clearfog.c +++ b/board/solidrun/clearfog/clearfog.c @@ -161,7 +161,7 @@ static struct mv_ddr_topology_map board_topology_map = { {0}, /* timing parameters */ { {0} }, /* electrical configuration */ {0,}, /* electrical parameters */ - 0, /* ODT configuration */ + 0x30000, /* ODT configuration */ 0x3, /* clock enable mask */ }; --- base-commit: 3881c6b90350b0b04085ad46ef64989b43967eef change-id: 20241127-a388-sr-som-odt-89f8dd6b6410 Best regards, -- Josua Mayer <jo...@solid-run.com>
