From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?utf-8?B?UGF3ZcWC?= Chmiel Subject: Re: [PATCH v2 3/3] dt-bindings: mfd: max8998: Add charger subnode binding Date: Mon, 16 Jul 2018 20:59:20 +0200 Message-ID: <2652044.7dgYAUSR2v@acerlaptop> References: <1531571213-30593-1-git-send-email-pawel.mikolaj.chmiel@gmail.com> <1531571213-30593-4-git-send-email-pawel.mikolaj.chmiel@gmail.com> <20180716180003.GA16037@rob-hp-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20180716180003.GA16037@rob-hp-laptop> Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring Cc: lgirdwood@gmail.com, broonie@kernel.org, sre@kernel.org, lee.jones@linaro.org, mark.rutland@arm.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org On Monday, July 16, 2018 12:00:03 PM CEST Rob Herring wrote: > On Sat, Jul 14, 2018 at 02:26:53PM +0200, Pawe=C5=82 Chmiel wrote: > > This patch adds devicetree bindings documentation for > > battery charging controller as the subnode of MAX8998 PMIC. > >=20 > > Signed-off-by: Pawe=C5=82 Chmiel > > --- > > Changes from v1: > > - Removed unneeded Fixes tag > > - Correct description of all charger values > > - Added missing property unit > > --- > > Documentation/devicetree/bindings/mfd/max8998.txt | 24 +++++++++++++++= ++++++++ > > 1 file changed, 24 insertions(+) > >=20 > > diff --git a/Documentation/devicetree/bindings/mfd/max8998.txt b/Docume= ntation/devicetree/bindings/mfd/max8998.txt > > index 23a3650ff2a2..196e50097a36 100644 > > --- a/Documentation/devicetree/bindings/mfd/max8998.txt > > +++ b/Documentation/devicetree/bindings/mfd/max8998.txt > > @@ -50,6 +50,23 @@ Additional properties required if max8998,pmic-buck2= =2Ddvs-gpio is defined: > > - max8998,pmic-buck2-dvs-voltage: An array of 2 voltage values in micr= ovolts > > for buck2 regulator that can be selected using dvs gpio. > > =20 > > +Charger: Configuration for battery charging controller should be added > > +inside a child node named 'charger'. > > + Required properties: > > + - max8998,charge-eoc-percent: Setup End of Charge Level. > > + If value equals 0, leave it unchanged. > > + Otherwise it should be value from 10 to 45 by 5 step. > > + > > + - max8998,charge-restart-level-microvolt: Setup Charge Restart Level. > > + If value equals 0, leave it unchanged. > > + If value equals -1, it will be disabled. >=20 > -1 is a bit strange. Why not 'not present' is disabled? I wanted to make it work the same way, as it was in case of using it from p= latform_data.=20 But this is good idea, to change it a bit. So we would have: =2D 0 -> leave unchanged =2D property not present in devicetree -> disabled (and set to -1 - driver = is expecting it) =2D value from 10-45 or (5,6,7 in case of second property) I'll update both documentation and driver parsing code (for both properties= - restart level and full timeout) and send v3 version. Thanks for suggestion. >=20 > > + Otherwise it should be one of following values: 100, 150, 200. > > + > > + - max8998,charge-timeout-hours: Setup Charge Full Timeout. > > + If value equals 0, leave it unchanged. > > + If value equals -1, it will be disabled. > > + Otherwise it should be one of following values: 5, 6, 7. > > + > > Regulators: All the regulators of MAX8998 to be instantiated shall be > > listed in a child node named 'regulators'. Each regulator is represent= ed > > by a child node of the 'regulators' node. > > @@ -99,6 +116,13 @@ Example: > > max8998,pmic-buck2-dvs-gpio =3D <&gpx0 0 3 0 0>; /* SET3 */ > > max8998,pmic-buck2-dvs-voltage =3D <1350000>, <1300000>; > > =20 > > + /* Charger configuration */ > > + charger { > > + max8998,charge-eoc-percent =3D <0>; > > + max8998,charge-restart-level-microvolt =3D <(-1)>; > > + max8998,charge-timeout-hours =3D <7>; > > + }; > > + > > /* Regulators to instantiate */ > > regulators { > > ldo2_reg: LDO2 { >=20