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=-8.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 4AEC6C43613 for ; Thu, 20 Jun 2019 08:18:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 234232084A for ; Thu, 20 Jun 2019 08:18:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="JZIyrluG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730891AbfFTIST (ORCPT ); Thu, 20 Jun 2019 04:18:19 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:3266 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725877AbfFTIST (ORCPT ); Thu, 20 Jun 2019 04:18:19 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Thu, 20 Jun 2019 01:18:19 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Thu, 20 Jun 2019 01:18:18 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Thu, 20 Jun 2019 01:18:18 -0700 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 20 Jun 2019 08:18:18 +0000 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Thu, 20 Jun 2019 08:18:18 +0000 Received: from moonraker.nvidia.com (Not Verified[10.21.132.148]) by hqnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Thu, 20 Jun 2019 01:18:17 -0700 From: Jon Hunter To: Thierry Reding , Rob Herring , Mark Rutland CC: , , Jon Hunter , Subject: [PATCH 2/3] arm64: tegra: Update Jetson TX1 GPU regulator timings Date: Thu, 20 Jun 2019 09:17:01 +0100 Message-ID: <20190620081702.17209-3-jonathanh@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190620081702.17209-1-jonathanh@nvidia.com> References: <20190620081702.17209-1-jonathanh@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1561018699; bh=pWavaGbgye2Pi/FLNO2W87uDt3CkK2tN/NQb369yLbI=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=JZIyrluGqOYojjp+ukpvJS6N8MYunZyJVS8tBdjtdvQEY/9aapRJtiAHMQCG8sPl9 Xxwh5zXENvpIoy+2gRsZhMlgxVNxInFwcqiQwdF/Mn35zlnlN3d62PpAyCT6hzuKKM /kv9LOb6Yrrt1Bmvox1azyZkO+zfH4JU6bqB8lxeA53q8veT3GynRSisTVxdcyk6EW BzPMsN5dWin4yXsO3YmdlYEyrDIyHuLRY3cPlIxDnKmqKztTQylOOD1d0p27ahvVRg 3T+1P3V7/qCC0zRWvtLJoUlWxLd0wIqnd0J9ofevS+cCs7/YM9FBsPM/dQcEJWmqgq GoOulxpYJQ4Lg== Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The GPU regulator enable ramp delay for Jetson TX1 is set to 1ms which not sufficient because the enable ramp delay has been measured to be greater than 1ms. Furthermore, the downstream kernels released by NVIDIA for Jetson TX1 are using a enable ramp delay 2ms and a settling delay of 160us. Update the GPU regulator enable ramp delay for Jetson TX1 to be 2ms and add a settling delay of 160us. Cc: stable@vger.kernel.org Signed-off-by: Jon Hunter --- arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi index e8654061ce03..27723829d033 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi @@ -341,7 +341,8 @@ regulator-max-microvolt = <1320000>; enable-gpios = <&pmic 6 GPIO_ACTIVE_HIGH>; regulator-ramp-delay = <80>; - regulator-enable-ramp-delay = <1000>; + regulator-enable-ramp-delay = <2000>; + regulator-settling-time-us = <160>; }; }; }; -- 2.17.1