On 2017-08-11 12:21, Jagan Teki wrote:
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
I've a 1.5 years old OPi Zero that was running uboot 2017.01 so far. I just tried to update to 2018.05, also using the new defconfig. The result was that uboot got stuck early during the first lines of output. Then I changed the DRAM clock back to 672, and things seem to work find.
Are we facing different board revisions that need different settings, or could the lowering be incorrect?
Jan