linux-kernel - Re: [linux-sunxi] [RFC] ARM: dts: sunxi: Add regulators and board-specific operating points for LeMaker BananaPi

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Message-Id: <20150727123653.36C046C8007E@dd34104.kasserver.com>
Date:	Mon, 27 Jul 2015 14:36:53 +0200 (CEST)
From:	public_timo.s@...entcreek.de
To:	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linux@....linux.org.uk, maxime.ripard@...e-electrons.com,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
	hdegoede@...hat.com
Cc:	wens@...e.org
Subject: Re: [linux-sunxi] [RFC] ARM: dts: sunxi: Add regulators and board-specific operating points for LeMaker BananaPi

Hi again,

one more thing...

Hans de Goede schrieb am 27.07.2015 10:07:
> IMHO we should just stick with the standard operating points unless we know
> that there are stability issues with them (such as e.g. on the A10 OlinuxIno
> Lime).

If we stick to the standard operating points, shouldn't we honor their voltages
as well? If we set the minimum voltage for dcdc2 to 1.0V (as you did) or 1.05V
(as I did), this means that the lowest operating point of 144MHz@...V defined
in sun7i-a20.dtsi (and with my definition the 312MHz opp as well) will not be
available because cpufreq-dt simply ignores operating points that aren't within
the set voltage range for that regulator.


Regards,

Timo


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