From b6bde930901b1375264865b979507eb25806cb77 Mon Sep 17 00:00:00 2001 From: Haiying Wang Date: Wed, 29 Sep 2010 13:31:36 -0400 Subject: [PATCH] mpc8569mds: fix some ddr settings Enable half drive strength, set RTT to 60Ohm and set write leveling override. Signed-off-by: Haiying Wang Signed-off-by: Kumar Gala --- board/freescale/mpc8569mds/ddr.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/board/freescale/mpc8569mds/ddr.c b/board/freescale/mpc8569mds/ddr.c index e938788..e3f5b4a 100644 --- a/board/freescale/mpc8569mds/ddr.c +++ b/board/freescale/mpc8569mds/ddr.c @@ -77,8 +77,18 @@ void fsl_ddr_board_options(memctl_options_t *popts, popts->write_data_delay = 2; /* - * Factors to consider for half-strength driver enable: - * - number of DIMMs installed + * Enable half drive strength */ - popts->half_strength_driver_enable = 0; + popts->half_strength_driver_enable = 1; + + /* Write leveling override */ + popts->wrlvl_en = 1; + popts->wrlvl_override = 1; + popts->wrlvl_sample = 0xa; + popts->wrlvl_start = 0x4; + + /* Rtt and Rtt_W override */ + popts->rtt_override = 1; + popts->rtt_override_value = DDR3_RTT_60_OHM; + popts->rtt_wr_override_value = 0; /* Rtt_WR= dynamic ODT off */ } -- 2.7.4