diff options
| author | Rajesh Bhagat <rajesh.bhagat@nxp.com> | 2018-01-17 16:13:07 +0530 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2018-01-23 11:20:28 -0800 |
| commit | 75ad48153f29d54359a47bc06be6a64fbecead56 (patch) | |
| tree | 8196d9a63a8ef2d4a5a6524bf5af90dff1e47449 /board/freescale/ls1088a | |
| parent | 554d33f3db3cdbb02f440ab3b667ff2bc3cfa2b1 (diff) | |
ls1088a: ddr: configure DDR for 0.9v for VID support
When VID feature is supported, check the contents of fuse register
and configure DDR operate at 0.9v.
Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'board/freescale/ls1088a')
| -rw-r--r-- | board/freescale/ls1088a/ddr.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/board/freescale/ls1088a/ddr.c b/board/freescale/ls1088a/ddr.c index e24bfd557c..2240454ec8 100644 --- a/board/freescale/ls1088a/ddr.c +++ b/board/freescale/ls1088a/ddr.c @@ -13,6 +13,23 @@ DECLARE_GLOBAL_DATA_PTR; +#if defined(CONFIG_VID) && (!defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)) +static void fsl_ddr_setup_0v9_volt(memctl_options_t *popts) +{ + int vdd; + + vdd = get_core_volt_from_fuse(); + /* Nothing to do for silicons doesn't support VID */ + if (vdd < 0) + return; + + if (vdd == 900) { + popts->ddr_cdr1 |= DDR_CDR1_V0PT9_EN; + debug("VID: configure DDR to support 900 mV\n"); + } +} +#endif + void fsl_ddr_board_options(memctl_options_t *popts, dimm_params_t *pdimm, unsigned int ctrl_num) @@ -87,6 +104,10 @@ found: popts->addr_hash = 1; popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_60ohm); +#if defined(CONFIG_VID) && (!defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD)) + fsl_ddr_setup_0v9_volt(popts); +#endif + popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_60ohm) | DDR_CDR2_VREF_TRAIN_EN | DDR_CDR2_VREF_RANGE_2; } |