[PATCH v3 2/2] drm: rcar-du: calculate DPLLCR to be more small jitter

Geert Uytterhoeven geert at linux-m68k.org
Fri Dec 15 08:01:50 UTC 2017

Hi Morimoto-san,

On Fri, Dec 15, 2017 at 2:24 AM, Kuninori Morimoto
<kuninori.morimoto.gx at renesas.com> wrote:
> From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
> In general, PLL has VCO (= Voltage controlled oscillator),
> one of the very important electronic feature called as "jitter"
> is related to this VCO.
> In academic generalism, VCO should be maximum to be more small jitter.
> In high frequency clock, jitter will be large impact.
> Thus, selecting Hi VCO is general theory.

Thanks for your patch!

> One note here is that it should be 2000 < fvco < 4096MHz

2000 Hz? (else it could be misinterpreted that MHz applies to both values).



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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