From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: Re: [PATCH] power: bq24261_charger: Add support for TI BQ24261 charger Date: Thu, 10 Sep 2015 08:49:26 +0900 Message-ID: <55F0C586.3010003@samsung.com> References: <1441560187-23611-1-git-send-email-ramakrishna.pallala@intel.com> <20150909022617.GA32255@beast> <55EFB2C7.30800@samsung.com> <20150909173147.GA9887@beast> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-reply-to: <20150909173147.GA9887@beast> Sender: linux-pm-owner@vger.kernel.org To: Andreas Dannenberg , laurentiu.palcu@intel.com Cc: Ramakrishna Pallala , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, Sebastian Reichel , Jenny TC List-Id: devicetree@vger.kernel.org On 10.09.2015 02:31, Andreas Dannenberg wrote: > On Wed, Sep 09, 2015 at 01:17:11PM +0900, Krzysztof Kozlowski wrote: >> On 09.09.2015 11:26, Andreas Dannenberg wrote: >>> Krzysztof, good observation! In bq2425x_charger.c (formerly known as >>> bq24257_charger.c :) that I worked on the unit used was uA. At that time >>> I did a quick check and there didn't seem to be a clear standard whether >>> to use the "micro" or "milli" units - different drivers use different >>> units. However there seems to be a tendency for the TI drivers to prefer >>> "milli" (bq2415x_charger.c, bq24735-charger.c) >>> >>> Personally I think "milli" units are more appropriate for chargers since >>> they provide sufficient granularity and the numbers don't become too big >>> (try typing a voltage in the Volt-range in uV, it's very easy to get the >>> number of 0s wrong). However since the driver was already there I left >>> that aspect alone to preserve compatibility. >> >> I am fine with both units but milli indeed seems easier to judge by fast >> looking and less error-prone. Whatever you choose - choose the same one. :) > > Ok sounds good. If so, I could go ahead and change the units in the > bq2425x_charger.c over to mA and mV? Wait, these are existing bindings (for bq24257). You cannot change existing binding. Best regards, Krzysztof > It would be a bit labor some and I > also want to see what Laurentiu thinks but this way we could have most > of those TI charger drivers use the same units (the new bq24261 driver > Ram posted also uses mA/mV). Except bq25890_charger.c.... that would > still use uA/uV.... > > Laurentiu -- what made you chose the "micro" units for bq24257_charger.c > and bq25890_charger.c?