Re: [PATCH 0/3] add CPUs OPPs to sun8i a83t

[Maxime Ripard]

On Wed, Feb 28, 2018 at 02:11:19PM +0100, Quentin Schulz wrote:
> Hi all,
> 
> The Allwinner A83T is an octacore A7 divided in two clusters of 4 A7,
> each cluster having its own regulator and clock.
> 
> Let's add the OPPs for each cluster so that we can use cpufreq on this SoC.
> 
> The operating points were found in Allwinner BSP and fex files and have
> been tested on a TBS A711 with cpuburn and cpufreq-ljt-stress-test.
> 
> Note that there are a few OPPs that are missing:
> 
> 1608000000Hz with 920000mV
> 1800000000Hz with 1000000mV
> 2016000000Hz with 1080000mV
> 
> These OPPs are pretty unstable but it might be due to the SoC quickly
> overheating (till the board completely shuts down).
> It seems[1] impossible to reach those frequencies with none or passive
> cooling, so better leave them out by default.
> 
> It's still possible to add those OPPs on a per-board basis though.
> 
> [1] http://linux-sunxi.org/User:Tkaiser#First_steps_with_Banana_Pi_M3

Applied all three. The patch 3/3 wasn't ordered properly, so I fixed
it, and I removed the newline pointed out by Thomas.

Thanks!
Maxime

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

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