+config DRAM_ODT_EN
+ int "sunxi dram odt_en value"
+ default 0
+ ---help---
+ Set the dram controller odt_en parameter. This can be used to
+ enable/disable the ODT feature.
+
+config DRAM_TPR3
+ hex "sunxi dram tpr3 value"
+ default 0
+ ---help---
+ Set the dram controller tpr3 parameter. This parameter configures
+ the delay on the command lane and also phase shifts, which are
+ applied for sampling incoming read data. The default value 0
+ means that no phase/delay adjustments are necessary. Properly
+ configuring this parameter increases reliability at high DRAM
+ clock speeds.
+
+config DRAM_DQS_GATING_DELAY
+ hex "sunxi dram dqs_gating_delay value"
+ default 0
+ ---help---
+ Set the dram controller dqs_gating_delay parmeter. Each byte
+ encodes the DQS gating delay for each byte lane. The delay
+ granularity is 1/4 cycle. For example, the value 0x05060606
+ means that the delay is 5 quarter-cycles for one lane (1.25
+ cycles) and 6 quarter-cycles (1.5 cycles) for 3 other lanes.
+ The default value 0 means autodetection. The results of hardware
+ autodetection are not very reliable and depend on the chip
+ temperature (sometimes producing different results on cold start
+ and warm reboot). But the accuracy of hardware autodetection
+ is usually good enough, unless running at really high DRAM
+ clocks speeds (up to 600MHz). If unsure, keep as 0.
+