From: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: Timo Sigurdsson <public_timo.s-fWgRPtSzPNU3WX+qO2AYSQ@public.gmane.org>
Cc: hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
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mark.rutland-5wv7dgnIgG8@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
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robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Subject: Re: [RFC] ARM: dts: sunxi: Add regulators and board-specific operating points for LeMaker BananaPi
Date: Tue, 28 Jul 2015 14:55:45 +0200 [thread overview]
Message-ID: <20150728125545.GC2564@lukather> (raw)
In-Reply-To: <20150728090216.892076C80D94-RzmsueL7+k6AvxNu/8lEInnhMCiq3JZZ@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 1087 bytes --]
On Tue, Jul 28, 2015 at 11:02:16AM +0200, Timo Sigurdsson wrote:
> Hi,
>
> Chen-Yu Tsai schrieb am 27.07.2015 15:14:
> >> ChenYu (in the CC), since you did most of the original work here, do
> >> you know why we have an op at 0.9 volt, but none of our boards allow the
> >> voltage to go that low in the regulator settings ?
> >
> > I'm on vacation now, so apologies for the bad formatting.
> >
> > The OPPs are from a common subset
> > of the settings from the fex files available
> > at the time. Some fex files actually set
> > min and max voltage thus eliminating
> > the highest and lowest OPPs.
> >
> > At least that is how Maxime and I
> > interpreted them.
>
> IMHO for a common maximum opp that's a good approach. But for the lowest
> frequency setting, it would seem more logical to me, to raise the voltage
> to a point where all boards will run fine with them, unless those boards
> cannot handle the frequency regardless of the higher voltage.
Agreed.
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2015-07-28 12:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-27 1:28 [RFC] ARM: dts: sunxi: Add regulators and board-specific operating points for LeMaker BananaPi Timo Sigurdsson
[not found] ` <1437960486-2809-1-git-send-email-public_timo.s-fWgRPtSzPNU3WX+qO2AYSQ@public.gmane.org>
2015-07-27 8:07 ` Hans de Goede
[not found] ` <55B5E6DB.8020009-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-07-27 12:09 ` [linux-sunxi] " public_timo.s-fWgRPtSzPNU3WX+qO2AYSQ
[not found] ` <20150727120918.191F76C82FB4-RzmsueL7+k6AvxNu/8lEInnhMCiq3JZZ@public.gmane.org>
2015-07-27 12:43 ` Hans de Goede
[not found] ` <55B62768.6040403-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-07-28 9:02 ` Timo Sigurdsson
[not found] ` <20150728090209.1D7BC6C80542-RzmsueL7+k6AvxNu/8lEInnhMCiq3JZZ@public.gmane.org>
2015-07-28 12:55 ` Maxime Ripard
2015-07-28 14:57 ` Timo Sigurdsson
2015-07-28 12:49 ` [linux-sunxi] " Maxime Ripard
2015-07-28 14:24 ` Hans de Goede
[not found] ` <55B790BA.5000509-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-07-28 15:09 ` Timo Sigurdsson
[not found] ` <20150728150929.233B56C80391-RzmsueL7+k6AvxNu/8lEInnhMCiq3JZZ@public.gmane.org>
2015-07-28 15:29 ` [linux-sunxi] " Hans de Goede
[not found] ` <55B79FCA.7070907-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-08-02 22:00 ` Timo Sigurdsson
2015-07-28 14:45 ` Timo Sigurdsson
2015-07-27 12:36 ` public_timo.s-fWgRPtSzPNU3WX+qO2AYSQ
[not found] ` <20150727123653.36C046C8007E-RzmsueL7+k6AvxNu/8lEInnhMCiq3JZZ@public.gmane.org>
2015-07-27 12:54 ` [linux-sunxi] " Hans de Goede
[not found] ` <55B62A1B.6030601-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-07-27 13:14 ` Chen-Yu Tsai
[not found] ` <CAGb2v65ApKvrj6K+kw43u=0q6=auTsmQjCXhibgZkW+vd5nDqA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-07-28 9:02 ` Timo Sigurdsson
[not found] ` <20150728090216.892076C80D94-RzmsueL7+k6AvxNu/8lEInnhMCiq3JZZ@public.gmane.org>
2015-07-28 12:55 ` Maxime Ripard [this message]
2015-07-28 15:01 ` Timo Sigurdsson
2015-07-28 23:02 ` Stefan Monnier
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