[U-Boot] [PATCH 1/6] armv8: Make COUNTER_FREQUENCY optional

Stephen Warren swarren at wwwdotorg.org
Thu Aug 20 17:32:05 CEST 2015


On 08/20/2015 03:42 AM, Thierry Reding wrote:
> From: Thierry Reding <treding at nvidia.com>
>
> Some platforms have the means to determine the counter frequency at
> runtime, so give them an opportunity to do so.

Aside from the one comment I already made, the series,

Acked-by: Stephen Warren <swarren at nvidia.com>
Tested-by: Stephen Warren <swarren at nvidia.com>

I validated that the calculated clk_m rate is correct on p2371-2180 when 
booted under L4T's nvtboot. I didn't validate the programming of 
cntfrq_el0, since I'm booting at EL2 not EL3. Still, that part is 
trivial and the same code as in start.S.

Tom, this series would replace my patch "ARM: tegra: fix 
COUNTER_FREQUENCY for T210". Or perhaps apply my patch then fix up the 
minor conflicts when applying this series. That would at least document 
the fact that COUNTER_FREQUENCY was wrong in all the initial header 
files, in case someone looks back at old git versions.


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