From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [RFC PATCH 0/2] cpufreq/regulator: Limit minimum voltage only Date: Mon, 22 Apr 2013 14:25:49 +0100 Message-ID: <20130422132549.GM30351@opensource.wolfsonmicro.com> References: <1366372554-20866-1-git-send-email-taras@ti.com> <20130419162153.GA24066@kahuna> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="W4pDZ/VvazBYHhxQ" Return-path: Content-Disposition: inline In-Reply-To: Sender: cpufreq-owner@vger.kernel.org To: "Bedia, Vaibhav" Cc: "Kondratiuk, Taras" , "Menon, Nishanth" , "Mohammed, Afzal" , "lgirdwood@gmail.com" , "rjw@sisk.pl" , "viresh.kumar@linaro.org" , "shawn.guo@linaro.org" , "cpufreq@vger.kernel.org" , "linux-pm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Strashko, Grygorii" , "Tseglytskyi, Andrii" , "linux-omap@vger.kernel.org" , "AnilKumar, Chimata" List-Id: linux-pm@vger.kernel.org --W4pDZ/VvazBYHhxQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Apr 22, 2013 at 06:11:12AM +0000, Bedia, Vaibhav wrote: > On Sat, Apr 20, 2013 at 05:54:10, Kondratiuk, Taras wrote: > that the PMIC outputs can come is either 1.25V or 1.275V. Now i think there's > been some confusion in the implementation phase due to things like board level > IR drops and variations mentioned in the PMIC datasheets which has resulted in > the tolerance being used both in am33xx.dtsi and then again in the cpufreq driver. Note that there is support in the regulator API for putting information in about voltage drops from the board to help compensate for things like this. It's just a straight linear offset but it should be OK for most uses. --W4pDZ/VvazBYHhxQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJRdTpWAAoJELSic+t+oim99AIP/2A3/88H1j0WU+/4HOgwMQFb 5oS22ytwV9VBQZURzTB0goQW7b59lkU5T+Rk2XPTnxgPzKa4awsgBGS5FPTqLb0n hlsjYXTCRhpdzhx0XAYE5l6iboSDc26IXogfcF9aftFUULo87mh33FRgyo9Ptf8z 5WqRaf0WdZtYRPzdkXZYFzwXmXFV7bFmDY7BumbGvCWa9NBwZYN8Ar3SnX24j8BH 9p0vDlddjrM1qWgze1sE3r4qwml8UKdpPm4hAQBCuXwdcevfJEVOzso6FaHndcTK 15pT8bbOtEBrlxa55uRMTD6Z3chwGzEuHTcspeFRUT4hNSlcJGeqlxx9TDgj9iFn SHv9aDXNO5Xl88MAyfxTjkmgnuT4C7tMkwb+FLS4fu7+aPNkFJD61jDoxeQItsr1 WTxCf445IwVFKt1gwZa/DyRn1nkXC+k//JRhDeZKVN2eZCI9+UkUWuPhSe3YyNoh 6+tABmHUMCDsGG0/Qm5inbtNT3OYfUg7qYeUmAu/JIE09fepeioBEiacV3BVwslc a5xaaPFRXIJ/OJtlp1gntWaGRukJe4e/lNHS/YJb/xWuD2co/mgjNbLbv9Rqwi6o iB2UPAtlAdobIg+MIzsU8aDmPKqxI9msLCsU90zh3pwRfFqgbBFatZHCXRwqXYBT jTZZgdw01Ld2lQRd6/5e =bY67 -----END PGP SIGNATURE----- --W4pDZ/VvazBYHhxQ--