[U-Boot] [PATCH] configs: Lower Lamobo R1 DRAM clock rate to 384 MHz

[Maxime Ripard]

On Fri, Jun 15, 2018 at 10:52:39PM +0200, Paul Kocialkowski wrote:
> When running at 432 MHz, the Lamobo R1 DRAM tends to get corrupted under
> stressing workloads. Reducing the clock rate to 384 MHz results in
> significantly-improved stability.
> 
> One reliable way to trigger a corruption at 432 MHz is to run
> I/O-intensive operations on an attached SATA disk. The same operations
> when operating the DRAM at 384 MHz typically go fine.
> 
> For some unexplained reason, running at 408 MHz worsens the situation.
> 
> Signed-off-by: Paul Kocialkowski <contact at paulk.fr>

What RAM settings are used by the Allwinner BSP, and can you reproduce
the issue there if they are the same?

Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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