u-boot/configs/orangepi_zero_defconfig
Clément Bœsch 8792a64d87 sunxi: reduce Orange Pi Zero DRAM clock speed
Using `fel-boot-lima-memtester-on-orange-pi-pc 672` on an Orange Pi
without heatsink results in the following error after a few minutes:
  WRITE FAILURE: 0x00200000 != 0xffdfffff at offset 0x0137f47c (bitflip).

Also, the constructor repository (github/orangepi-xunlong) seems to
contain that 624 Mhz clock speed in its u-boot fork. It may be that 672
Mhz is the advertized overclocked speed.

According to http://linux-sunxi.org/Orange_Pi_PC#DRAM_clock_speed_limit
it may be worth decreasing that value with other Orange Pi boards.

See also e7d6aa0b74.

Signed-off-by: Clément Bœsch <u@pkh.me>
[Add s-o-b line]
Signed-off-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2017-08-11 15:43:44 +05:30

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CONFIG_ARM=y
CONFIG_ARCH_SUNXI=y
CONFIG_SPL_SPI_FLASH_SUPPORT=y
CONFIG_MACH_SUN8I_H3=y
CONFIG_DRAM_CLK=624
CONFIG_DRAM_ZQ=3881979
CONFIG_DRAM_ODT_EN=y
# CONFIG_VIDEO_DE2 is not set
CONFIG_DEFAULT_DEVICE_TREE="sun8i-h2-plus-orangepi-zero"
# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
CONFIG_CONSOLE_MUX=y
CONFIG_SPL=y
# CONFIG_CMD_IMLS is not set
# CONFIG_CMD_FLASH is not set
# CONFIG_CMD_FPGA is not set
CONFIG_SPL_SPI_SUNXI=y
CONFIG_SUN8I_EMAC=y
CONFIG_USB_EHCI_HCD=y