Re: [PATCH 4/4] cpu_cooling: Drop static-power related stuff

From: Daniel Lezcano
Date: Tue Nov 21 2017 - 13:05:57 EST

On 21/11/2017 19:00, Javi Merino wrote:
> Hi,
> On Tue, Nov 21, 2017 at 08:57:06AM -0800, Eduardo Valentin wrote:
> [snip]
>> As I said before, the minimal you guys (ARM and Linaro) can do is to at
>> least upstream the Juno code! as a reference. Come on guys? what is
>> preventing you to upstream Juno model?
> As Ionela pointed out earlier in the thread, the cpufreq driver for Juno
> was not acceptable for mainline because it used platform specific code.
> When it was converted to cpufreq-dt, the static power was left behind
> because it can't be represented in device tree. This is because there
> isn't a function that works for every SoC, different process nodes
> (among other things) will need different functions. So it can't be just
> a bunch of coefficients in DT, we need a function. Hence the callback.

The DT could contain the coef and a compatible string for a specific
polynomial computation callback. I imagine we should not have a lot of
different equations, no ?

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