Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752820AbbHIW7B (ORCPT ); Sun, 9 Aug 2015 18:59:01 -0400 Received: from mail-wi0-f169.google.com ([209.85.212.169]:37634 "EHLO mail-wi0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751248AbbHIW66 (ORCPT ); Sun, 9 Aug 2015 18:58:58 -0400 Message-ID: <55C7DB2F.5080907@gmail.com> Date: Sun, 09 Aug 2015 23:58:55 +0100 From: Iain Paton User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: public_timo.s@silentcreek.de CC: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linux@arm.linux.org.uk, maxime.ripard@free-electrons.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, wens@csie.org Subject: Re: [linux-sunxi] [PATCH v2] ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to meet SoC specifications References: <1438722481-2302-1-git-send-email-public_timo.s@silentcreek.de> In-Reply-To: <1438722481-2302-1-git-send-email-public_timo.s@silentcreek.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1436 Lines: 39 Acked-by: Iain Paton On 04/08/15 22:08, Timo Sigurdsson wrote: > sun7i-a20.dtsi contains a cpufreq operating point at 0.9 volts. The minimum > CPU voltage for the Allwinner A20 SoC, however, is 1.0 volts. Thus, raise > the voltage for the lowest operating point to 1.0 volts in order to stay > within the SoC specifications. It is an undervolted setting that isn't > stable across all SoCs and boards out there. > > Signed-off-by: Timo Sigurdsson > --- > Changes since v1: > > - Fixed checkpatch warnings > - Changed the commit message and title to clarify that this is not a board-specific issue, but rather a limitation by the SoC > --- > arch/arm/boot/dts/sun7i-a20.dtsi | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi > index 6a63f30..f5f384c 100644 > --- a/arch/arm/boot/dts/sun7i-a20.dtsi > +++ b/arch/arm/boot/dts/sun7i-a20.dtsi > @@ -107,7 +107,7 @@ > 720000 1200000 > 528000 1100000 > 312000 1000000 > - 144000 900000 > + 144000 1000000 > >; > #cooling-cells = <2>; > cooling-min-level = <0>; > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/