From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754282AbdCTLjU (ORCPT ); Mon, 20 Mar 2017 07:39:20 -0400 Received: from mail.free-electrons.com ([62.4.15.54]:49363 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753075AbdCTLiz (ORCPT ); Mon, 20 Mar 2017 07:38:55 -0400 From: Quentin Schulz To: robh+dt@kernel.org, mark.rutland@arm.com, linux@armlinux.org.u, maxime.ripard@free-electrons.com, wens@csie.org, icenowy@aosc.xyz Cc: Quentin Schulz , linux-sunxi@googlegroups.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, thomas.petazzoni@free-electrons.com Subject: [PATCH] ARM: sun8i: a33: remove highest OPP to fix CPU crashes Date: Mon, 20 Mar 2017 12:25:51 +0100 Message-Id: <20170320112551.25825-1-quentin.schulz@free-electrons.com> X-Mailer: git-send-email 2.9.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The highest supported frequency (1.2GHz) requires to "overvolt" the CPU. However, some boards still do not have the cpu-supply DT property in the cpu DT node which means that the CPU will always run with the same input voltage but try to run at 1.2GHz frequency. This is the source of (experienced) CPU crashes. Remove the OPP which requires overvolting the CPU until all boards have a cpu-supply property. Fixes: 03749eb88e635ad67818827adde8e5eea7b64571 ("ARM: dts: sun8i: add opp-v2 table for A33") Signed-off-by: Quentin Schulz --- arch/arm/boot/dts/sun8i-a33.dtsi | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi index 9d82414..463b2b3 100644 --- a/arch/arm/boot/dts/sun8i-a33.dtsi +++ b/arch/arm/boot/dts/sun8i-a33.dtsi @@ -121,12 +121,6 @@ opp-microvolt = <1200000>; clock-latency-ns = <244144>; /* 8 32k periods */ }; - - opp@1200000000 { - opp-hz = /bits/ 64 <1200000000>; - opp-microvolt = <1320000>; - clock-latency-ns = <244144>; /* 8 32k periods */ - }; }; cpus { -- 2.9.3