Re: [U-Boot] [PATCH] sunxi: reduce Orange Pi Zero DRAM clock speed

On Mon, Jul 24, 2017 at 1:44 AM, Clément Bœsch u@pkh.me wrote:

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 e7d6aa0b74b7f4d08ee68da8a586c76c761348e2.

Applied to u-boot-sunxi/master

thanks!