From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6376EC3B186 for ; Mon, 10 Feb 2020 12:57:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 338C120733 for ; Mon, 10 Feb 2020 12:57:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581339477; bh=nKPESEBBVbq7QRV44lN6GvJzwPK+HexaFyj4+anZu6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=gIu9tUyp4LJyF88oHJ7X/wobKqoGR97TVCUYMAo8Sp528PiEg5ucPO6ZO7R3Gtbcs 1e6/cTHJ5BqfmFbbhjcQjVfjcjvdWb2TZX5688b608IboZt2EqPlwd7aDmZ+W20uE7 g1fBYgqV2HSlZEyxW+AUl5Jzn3WnZGZoncywL0pU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729761AbgBJM5q (ORCPT ); Mon, 10 Feb 2020 07:57:46 -0500 Received: from mail.kernel.org ([198.145.29.99]:43596 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728168AbgBJMlY (ORCPT ); Mon, 10 Feb 2020 07:41:24 -0500 Received: from localhost (unknown [209.37.97.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 08AAB20873; Mon, 10 Feb 2020 12:41:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581338484; bh=nKPESEBBVbq7QRV44lN6GvJzwPK+HexaFyj4+anZu6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ofBA8MTo6S8kM9zCveCoyFLWIfY4JaJkMux8jLd4WOeUwhjNg2WzpFWsWEjnq3ff0 Oo4ISw1YQWK382VW1CtAzwglHFRLbQtpBLYPub08tu0P0PSx2Y/fz5OhJ7MRluA8Qd yFniAua8XCrWbGjtWD+RS0CAlAajWu/lPVLNjsZY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bjorn Andersson , Niklas Cassel , Vinod Koul Subject: [PATCH 5.5 263/367] arm64: dts: qcom: qcs404-evb: Set vdd_apc regulator in high power mode Date: Mon, 10 Feb 2020 04:32:56 -0800 Message-Id: <20200210122448.776944453@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200210122423.695146547@linuxfoundation.org> References: <20200210122423.695146547@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Niklas Cassel commit eac8ce86cb90ba96cb4bcbf2549d7a8b6938aa30 upstream. vdd_apc is the regulator that supplies the main CPU cluster. At sudden CPU load changes, we have noticed invalid page faults on addresses with all bits shifted, as well as on addresses with individual bits flipped. By putting the vdd_apc regulator in high power mode, the voltage drops during sudden load changes will be less severe, and we have not been able to reproduce the invalid page faults with the regulator in this mode. Fixes: 8faea8edbb35 ("arm64: dts: qcom: qcs404-evb: add spmi regulators") Cc: stable@vger.kernel.org Suggested-by: Bjorn Andersson Signed-off-by: Niklas Cassel Reviewed-by: Vinod Koul Link: https://lore.kernel.org/r/20191014120920.12691-1-niklas.cassel@linaro.org Signed-off-by: Bjorn Andersson Signed-off-by: Greg Kroah-Hartman --- arch/arm64/boot/dts/qcom/qcs404-evb.dtsi | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi +++ b/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi @@ -73,6 +73,7 @@ regulator-always-on; regulator-boot-on; regulator-name = "vdd_apc"; + regulator-initial-mode = <1>; regulator-min-microvolt = <1048000>; regulator-max-microvolt = <1384000>; };