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,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 A67A6C32750 for ; Fri, 2 Aug 2019 09:44:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E80E2087E for ; Fri, 2 Aug 2019 09:44:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564739072; bh=bvh+rZz4l1IFH8gR+xxGk8M2ZG7FO7wx8lJ/CZJaJ3U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kPszEQ5pLQEMm27EXh5tu46qf/6E5VDqiazLowCiVUxsLUknNxK1EP2oHwip6qTMH EoUz2Cpvoz2nRXuzFsvBjROd02gAiC1VPhCO+5Lyw5V6jTDq+PXJf3R98OuM0VjaVO WuL8XDN+NRA7ohfUbb8CGm4cUzgEX7HGxoIcSTF4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405251AbfHBJoa (ORCPT ); Fri, 2 Aug 2019 05:44:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:47840 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404270AbfHBJo2 (ORCPT ); Fri, 2 Aug 2019 05:44:28 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 2B4D12087E; Fri, 2 Aug 2019 09:44:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564739067; bh=bvh+rZz4l1IFH8gR+xxGk8M2ZG7FO7wx8lJ/CZJaJ3U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Kkug6PU6rSAJQirnpNq1sL/leuxlEsVDu6hxJ/kPb1JwVvIt7bkgEm0gZ1yXyuvpt 4a8d1JO2kZL322SRvj95wFd3YcsV3LmpzzMNbgMN63Qlhelk0YQMC8ziLyzznBuv/J mis4fZvDO20ghuJ7mKeAzS86b1x2mmJyhDxqF7EY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jon Hunter , Thierry Reding Subject: [PATCH 4.9 085/223] arm64: tegra: Update Jetson TX1 GPU regulator timings Date: Fri, 2 Aug 2019 11:35:10 +0200 Message-Id: <20190802092244.493486079@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802092238.692035242@linuxfoundation.org> References: <20190802092238.692035242@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: Jon Hunter commit ece6031ece2dd64d63708cfe1088016cee5b10c0 upstream. 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 Fixes: 5e6b9a89afce ("arm64: tegra: Add VDD_GPU regulator to Jetson TX1") Signed-off-by: Thierry Reding Signed-off-by: Greg Kroah-Hartman --- arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi @@ -306,7 +306,8 @@ 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>; }; }; };