From mboxrd@z Thu Jan 1 00:00:00 1970 From: pali.rohar@gmail.com (Pali =?utf-8?q?Roh=C3=A1r?=) Date: Fri, 6 Mar 2015 23:56:06 +0100 Subject: twl4030_charger: need changes to get probed? In-Reply-To: <20150306224034.GA20559@amd> References: <20150224043341.4243.23291.stgit@notabene.brown> <20150306224034.GA20559@amd> Message-ID: <201503062356.06110@pali> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Friday 06 March 2015 23:40:34 Pavel Machek wrote: > On Sat 2015-03-07 00:12:07, Grazvydas Ignotas wrote: > > On Fri, Mar 6, 2015 at 11:57 PM, Pali Roh?r > > wrote: > > > On Friday 06 March 2015 22:24:17 Pavel Machek wrote: > > >> Hi! > > >> > > >> According to n900 dts, twl4030-bci (aka charger) should > > >> be included. > > > > > > AFAIK it is not present on n900... > > > > Right, it uses twl5030 variant without the charger, charging > > on n900 is provided by separate chip and for a good reason > > as twl's charger is not that good. Forcing the driver to > > load just ends up with it accessing non-existent registers > > over i2c. > > Ok, but: > > 1) Why is the twl4030-bci enabled in n900's dts, then > maybe it is bug in n900 dts... Grazvydas, is there some runtime check if twl4030/twl5030 chip has charger or not? or do we need to explicitly disable device twl4030-bci in DT? > and > > 2) When it is enabled, why it does not load? > > (I guess there's no way to get to input voltage on n900...?) > > Pavel you can read voltage only from rx51_battery.ko (TWL ADC) or bq27x00_battery.ko look for Nokia_N900_RX-51_Schematics.pdf file where you can find information what is connected to ADC and bq27200 chip. -- Pali Roh?r pali.rohar at gmail.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: