Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755620AbbG1M4I (ORCPT ); Tue, 28 Jul 2015 08:56:08 -0400 Received: from down.free-electrons.com ([37.187.137.238]:58452 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751698AbbG1M4G (ORCPT ); Tue, 28 Jul 2015 08:56:06 -0400 Date: Tue, 28 Jul 2015 14:55:45 +0200 From: Maxime Ripard To: Timo Sigurdsson Cc: hdegoede@redhat.com, wens@csie.org, galak@codeaurora.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org, ijc+devicetree@hellion.org.uk, linux-arm-kernel@lists.infradead.org, linux-sunxi@googlegroups.com, pawel.moll@arm.com, linux@arm.linux.org.uk, robh+dt@kernel.org Subject: Re: [linux-sunxi] [RFC] ARM: dts: sunxi: Add regulators and board-specific operating points for LeMaker BananaPi Message-ID: <20150728125545.GC2564@lukather> References: <1437960486-2809-1-git-send-email-public_timo.s@silentcreek.de> <55B5E6DB.8020009@redhat.com> <20150727123653.36C046C8007E@dd34104.kasserver.com> <55B62A1B.6030601@redhat.com> <20150728090216.892076C80D94@dd34104.kasserver.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ChCJQocta8D2pgCp" Content-Disposition: inline In-Reply-To: <20150728090216.892076C80D94@dd34104.kasserver.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2450 Lines: 69 --ChCJQocta8D2pgCp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jul 28, 2015 at 11:02:16AM +0200, Timo Sigurdsson wrote: > Hi, >=20 > 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 t= he > >> voltage to go that low in the regulator settings ? > >=20 > > I'm on vacation now, so apologies for the bad formatting. > >=20 > > 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. > >=20 > > At least that is how Maxime and I > > interpreted them. >=20 > 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= =20 > cannot handle the frequency regardless of the higher voltage. Agreed. Maxime --=20 Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com --ChCJQocta8D2pgCp Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVt3vRAAoJEBx+YmzsjxAgjOIP/1Ux5k885gY5nYmpQRKugM8i xkzmyMRNTi+dDMxn/gQ+1mxtZ0ZCJdHifHWLHsCv8YKvRFaSoNLfyKorF8QB7POb XAxwukLFU+Gok+9R1p0juuoIFlhdaUvqHLoWrMyVpxpB+G29SVfPPNrCvXujXIna +ESaDSRU0ZIHWrc6OFjOlYmQBk3njEM0mneQwxWf96veM93jZlax6l6W6yXoOFYZ SF03WpEiD+ensQGUGM/oynCSODz/0PRpkvRp5jWSLR8ICMzleiE5T8KLD+zuUoc3 qGDZMgi/rDdWawfYllGFR6+mlfhmJjuf/akIymXN7dTFVbiQEE66UAXv7DdhPmSi zsWsApg+8PrIcMwh8m/zmH6kUKLkqkO5y/67qWdLL25l/duAKys9YOWn4xfMncVe 9sgLHelD/Q2czvY+B4h8ojmo3d0HGm5z977tlxw3P4HqDOlhaYhJBHDoR7JYFk5b 9tclrjqhbVCxHp9ISX6QM8msPvRqlPeE53c7quGa32Voa4H/He9xor+0UNYFnm1n 7SRelOJEVqfHHKhiYMUNICIXCfqpCt34HTFNOKX3pTHrKon0VyA25SpWulcG/Rha 26AwMKNwUfWhR61bz24Vi8VJo+wFsWz0un2/wWrPBR1IehMYsBjnBYDgDrncFC2L WRXtp1uhACLNhBaEiqZA =ILNY -----END PGP SIGNATURE----- --ChCJQocta8D2pgCp-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/