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Diffstat (limited to 'board/sunxi/Kconfig')
| -rw-r--r-- | board/sunxi/Kconfig | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig index adbd2b5..da4e8ba 100644 --- a/board/sunxi/Kconfig +++ b/board/sunxi/Kconfig @@ -55,6 +55,38 @@ config DRAM_EMR1 default 4 if MACH_SUN5I || MACH_SUN7I ---help--- Set the dram controller emr1 value. + +choice + prompt "sunxi dram timings" + default DRAM_TIMINGS_VENDOR_MAGIC + ---help--- + Select the timings of the DDR3 chips. + +config DRAM_TIMINGS_VENDOR_MAGIC + bool "Magic vendor timings from Android" + ---help--- + The same DRAM timings as in the Allwinner boot0 bootloader. + +config DRAM_TIMINGS_DDR3_1066F_1333H + bool "JEDEC DDR3-1333H with down binning to DDR3-1066F" + ---help--- + Use the timings of the standard JEDEC DDR3-1066F speed bin for + DRAM_CLK <= 533MHz and the timings of the DDR3-1333H speed bin + for DRAM_CLK > 533MHz. This covers the majority of DDR3 chips + used in Allwinner A10/A13/A20 devices. In the case of DDR3-1333 + or DDR3-1600 chips, be sure to check the DRAM datasheet to confirm + that down binning to DDR3-1066F is supported (because DDR3-1066F + uses a bit faster timings than DDR3-1333H). + +config DRAM_TIMINGS_DDR3_800E_1066G_1333J + bool "JEDEC DDR3-800E / DDR3-1066G / DDR3-1333J" + ---help--- + Use the timings of the slowest possible JEDEC speed bin for the + selected DRAM_CLK. Depending on the DRAM_CLK value, it may be + DDR3-800E, DDR3-1066G or DDR3-1333J. + +endchoice + endif config SYS_CONFIG_NAME |