[PATCH v5 3/7] ARM: dts: Exynos542x/5800: add CPU OPP properties

Viresh Kumar viresh.kumar at linaro.org
Thu Dec 10 19:32:53 PST 2015

On 11-12-15, 00:25, Javier Martinez Canillas wrote:
> The problem is that the big and LITTLE cores have different ordering per SoCs:
> - Exynos5420 and Exynos5800: cpu0-3 (Cortex-A15) and cpu4-7 (Coretx-A7)
> - Exynos5422: cpu0-3 (Cortex-A7) and cpu4-7 (Cortex-A15)
> So the OPP tables are set in this DTSI file, to prevent the OPP tables
> in the Exynos5422 to be inverted for the cluster 0 and 1.

Oh dude, that's really *ugly*. :)

Reusing files/definitions is fine to the point where things are
readable. But you have screwed it up so very badly.

Over that, why can't you keep cpu0-3 as A7 and 4-7 as a15 for all the
cases? The only worrying thing for you should be that CPU0 within the
kenrel should be controllable, right? i.e. you want a A15 to boot 5800
and A7 to boot 5422.

If yes, than you could have kept the CPUs in 5422 as:
0-3: A7
4-7: A15

and in 5420 as:
4-7: A15
0-3: A7

Wouldnt' that work ?


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