From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751195AbdFBJXx (ORCPT ); Fri, 2 Jun 2017 05:23:53 -0400 Received: from lelnx194.ext.ti.com ([198.47.27.80]:34862 "EHLO lelnx194.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751128AbdFBJXv (ORCPT ); Fri, 2 Jun 2017 05:23:51 -0400 Subject: Re: [PATCH] ARM: dts: Remove min and max voltage values for dcdc3 To: References: <1496395308-29471-1-git-send-email-j-keerthy@ti.com> CC: , , , , , From: Keerthy Message-ID: <99d7bac7-164c-bc71-edff-6d3590a92298@ti.com> Date: Fri, 2 Jun 2017 14:53:19 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 MIME-Version: 1.0 In-Reply-To: <1496395308-29471-1-git-send-email-j-keerthy@ti.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday 02 June 2017 02:51 PM, Keerthy wrote: > dcdc3 supplies to DDR on AM43x series. When we set both > min and max values to the same value. The regulator framework > sets that particular voltage. This is bad as we are changing > the ddr voltage when executing from ddr. Hence remove the min and > max values. The ddr supply voltage shall be set from bootloader > when not executing from ddr and not while executing from kernel. Apologies for the $subject. I will send v2 with $Subject corrected. > > The previous discussion can be found here: > > http://www.spinics.net/lists/devicetree/msg56399.html > > Signed-off-by: Keerthy > --- > arch/arm/boot/dts/am437x-gp-evm.dts | 2 -- > arch/arm/boot/dts/am437x-sk-evm.dts | 2 -- > arch/arm/boot/dts/am43x-epos-evm.dts | 2 -- > 3 files changed, 6 deletions(-) > > diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts > index 397e98b..29a538e 100644 > --- a/arch/arm/boot/dts/am437x-gp-evm.dts > +++ b/arch/arm/boot/dts/am437x-gp-evm.dts > @@ -549,8 +549,6 @@ > > dcdc3: regulator-dcdc3 { > regulator-name = "vdcdc3"; > - regulator-min-microvolt = <1500000>; > - regulator-max-microvolt = <1500000>; > regulator-boot-on; > regulator-always-on; > regulator-state-mem { > diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts > index a62e158..2c6bf06 100644 > --- a/arch/arm/boot/dts/am437x-sk-evm.dts > +++ b/arch/arm/boot/dts/am437x-sk-evm.dts > @@ -451,8 +451,6 @@ > > dcdc3: regulator-dcdc3 { > regulator-name = "vdds_ddr"; > - regulator-min-microvolt = <1500000>; > - regulator-max-microvolt = <1500000>; > regulator-boot-on; > regulator-always-on; > regulator-state-mem { > diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts > index f6648ab..54f40f3 100644 > --- a/arch/arm/boot/dts/am43x-epos-evm.dts > +++ b/arch/arm/boot/dts/am43x-epos-evm.dts > @@ -442,8 +442,6 @@ > > dcdc3: regulator-dcdc3 { > regulator-name = "vdcdc3"; > - regulator-min-microvolt = <1500000>; > - regulator-max-microvolt = <1500000>; > regulator-boot-on; > regulator-always-on; > }; >