When VID feature is supported, check the contents of fuse register
and configure DDR operate at 0.9v.
Signed-off-by: Ashish Kumar <ashish.ku...@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bha...@nxp.com>
---
Changes in v8:
- Changed fsl_ddr_setup_0v9_volt function to static
- Moved printf to debug for DDR voltage adjustment
None
board/freescale/ls1088a/ddr.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/board/freescale/ls1088a/ddr.c b/board/freescale/ls1088a/ddr.c
index e24bfd5..2240454 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;
}
--
2.7.4
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