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=ham 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 96E7BC352A3 for ; Mon, 10 Feb 2020 12:57:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6635920714 for ; Mon, 10 Feb 2020 12:57:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581339420; bh=nKPESEBBVbq7QRV44lN6GvJzwPK+HexaFyj4+anZu6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Lbf5I3d8MDY1liNl89Ma3I8QDBRmMnJQVk0Zy+aUAPjybWWqS+9oVVMYoF9clii6w JrWn8bwZDMQcqHYGX1P2lzS45/vpjQV5rYwdOXSJihNOiNEH04n03NeWpajptYzs0O zztUuDutn4qOHyMPG31dzSvJ/EY8BBcm5nCkMWL4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729364AbgBJMle (ORCPT ); Mon, 10 Feb 2020 07:41:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:34906 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728657AbgBJMit (ORCPT ); Mon, 10 Feb 2020 07:38:49 -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 1C96720838; Mon, 10 Feb 2020 12:38:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581338329; bh=nKPESEBBVbq7QRV44lN6GvJzwPK+HexaFyj4+anZu6o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H15gL98U2SiHMijiRwGW72Sng2ox8+FLmrIrp2cW4mtla1MlJB0DTH91w3AxPrURJ RwytkQletN2EYDtHUZJ4J1Eu8DHgPkmbX1aflUbGz0gBHqvip9lxCkIDDznMaOJea+ 1KShuv6jFi3pAjMwLlUI+3SwFBeS+gW6xAlNXKAE= 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 5.4 228/309] arm64: dts: qcom: qcs404-evb: Set vdd_apc regulator in high power mode Date: Mon, 10 Feb 2020 04:33:04 -0800 Message-Id: <20200210122428.445697373@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200210122406.106356946@linuxfoundation.org> References: <20200210122406.106356946@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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>; };