在 2017-10-31二的 09:09 +0100，Maxime Ripard写道： > On Tue, Oct 31, 2017 at 03:56:08PM +0800, Icenowy Zheng wrote: > > When I use Orange Pi Prime to do some heavy compliation tasks, the > > gcc > > compiler sometimes mysteriously segfaults, and memtester catches > > memory > > error. As the lima-memtester cannot support H5 (Mali-450 GPU > > equipped), > > there's no really reliable way to detect DRAM stability except try > > and > > error. > > > > Lower the DDR frequency to 624MHz seems to solved the issue. > > > > Set the default frequency to 624MHz in the defconfig, as 672MHz is > > observed to be unstable at least on my board. > > > > Signed-off-by: Icenowy Zheng <[email protected]> > > What is the value used in the fex file?
When testing with BSP images made by Orange Pi, I found that in newer images they secretly tweaked the DDR freq of Orange Pi PC2 and Prime to 624MHz. This is found by checking pll-dram frequency after booting. > > Maxime > -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
