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=-5.6 required=3.0 tests=DATE_IN_PAST_06_12, 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 3E9BEC76194 for ; Thu, 25 Jul 2019 05:43:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 125B422BEB for ; Thu, 25 Jul 2019 05:43:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564033403; bh=G/DQK8s5QJEbsTYqppHaMwUnwF31mN6P3vDoCJ3I/m8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jat6l7KmODPOo7CHIecanGie0s1sS/Io4BpQmSzAvzTzvGYbeHYyEShWmVBcOs+su 62ZcMNSh2bXtOBVoGE0pslIKdVtw8DGLXrO8e1arjLvF7iq0kyMkiv/AAlN2yAEOWZ 0WoVpzWbK3iTm/a5zUvt3HL7Hzn0cCK3i2dRfapI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391009AbfGYFnW (ORCPT ); Thu, 25 Jul 2019 01:43:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:58248 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404910AbfGYFnS (ORCPT ); Thu, 25 Jul 2019 01:43:18 -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 D5CDE21850; Thu, 25 Jul 2019 05:43:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564033398; bh=G/DQK8s5QJEbsTYqppHaMwUnwF31mN6P3vDoCJ3I/m8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1Vi8BP/qoELAqLvJRRBG2vKN57hmETHhiiCjyNzmxrNJHzEERCDuG5y5JAnNk8VoK AAWYp/ZcOyofDkDVXM5AF0lcLRIlFnIjsF7nC6Elsmd07HvwevvurHISeMB/yofjaK OChjOrl+BgrWrCu/OyT4iKgDXnyQMEtEgDarf8bM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jon Hunter , Thierry Reding Subject: [PATCH 4.19 194/271] arm64: tegra: Update Jetson TX1 GPU regulator timings Date: Wed, 24 Jul 2019 21:21:03 +0200 Message-Id: <20190724191711.730835949@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190724191655.268628197@linuxfoundation.org> References: <20190724191655.268628197@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: 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 @@ -330,7 +330,8 @@ 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>; }; }; };