On 10/11/2018 09:09 AM, Ludwig Zenz wrote:
> Hello Marek,
Hello Ludwig,
>>> From: Ludwig Zenz <lz...@dh-electronics.de>
>>>
>>> Support 1GIB + 2GIB DDR3 with 64bit bus width and 512MIB + 1GIB with 32bit
>>> bus width
>>>
>>> Signed-off-by: Ludwig Zenz <lz...@dh-electronics.de>
>>> ---
>>> board/dhelectronics/dh_imx6/dh_imx6_spl.c | 191
>>> +++++++++++++++++++++++++++---
>>> 1 file changed, 173 insertions(+), 18 deletions(-)
>>>
>>> diff --git a/board/dhelectronics/dh_imx6/dh_imx6_spl.c
>>> b/board/dhelectronics/dh_imx6/dh_imx6_spl.c
>> [...]
>>
>> This patch causes memory instability on 1GiB MX6Q part.
>>
>> Can you check that and fix it ? Thanks.
>
> Can you tell me more about the error? How do you test this? Did you run a git
> bisect?
>
> We did tests in a climate chamber with this configuration (with the MX6Q and
> all others).
>
> I think there is only one change that could make a difference:
>
> static const struct mx6_ddr3_cfg dhcom_mem_ddr_2g = {
> ...
> - .trcd = 1312,
> + .trcd = 1375,
> ....
In this particular case, the board exhibited random instability. Try
running memtester in linux for a few days, maybe some board that you
have will start exhibiting this too.
--
Best regards,
Marek Vasut
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