diff options
Diffstat (limited to 'board/sunxi/Kconfig')
-rw-r--r-- | board/sunxi/Kconfig | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig index da4e8ba..4a21589 100644 --- a/board/sunxi/Kconfig +++ b/board/sunxi/Kconfig @@ -41,6 +41,15 @@ config DRAM_CLK Set the dram clock speed, valid range 240 - 480, must be a multiple of 24. +if MACH_SUN5I || MACH_SUN7I +config DRAM_MBUS_CLK + int "sunxi mbus clock speed" + default 300 + ---help--- + Set the mbus clock speed. The maximum on sun5i hardware is 300MHz. + +endif + config DRAM_ZQ int "sunxi dram zq value" default 123 if MACH_SUN4I || MACH_SUN5I || MACH_SUN6I || MACH_SUN8I @@ -56,6 +65,40 @@ config DRAM_EMR1 ---help--- Set the dram controller emr1 value. +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. + choice prompt "sunxi dram timings" default DRAM_TIMINGS_VENDOR_MAGIC |