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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 291C0C43381 for ; Wed, 6 Mar 2019 14:04:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E88F020661 for ; Wed, 6 Mar 2019 14:04:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="mL0APZsa" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727019AbfCFOEa (ORCPT ); Wed, 6 Mar 2019 09:04:30 -0500 Received: from mail-yw1-f66.google.com ([209.85.161.66]:46901 "EHLO mail-yw1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725788AbfCFOEZ (ORCPT ); Wed, 6 Mar 2019 09:04:25 -0500 Received: by mail-yw1-f66.google.com with SMTP id n12so9978712ywn.13; Wed, 06 Mar 2019 06:04:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=rEf4ejbpthV1S86dVzs0RdnPSjp5YJYxDnpkYt7WdcQ=; b=mL0APZsafGKKrdJcMuvUcvABwk2reRhCRKMV92Xxy0iM1+/crnUVRw1gsG9Y3DcpOk nmoVh2pDvDxh1YzwRgstQVyfVTNwV0yWzeu7FtuQMYXArm2At8mHspbInWUHBAI+DMnm wIUFxRrVlzo9BLTP6uxVUIk0XEiDs0IOk5lJaPL2Aw9B6QJLdnsvPDTR7CS7Z6elFngD b3akg01MprlaM6jGuU9o73oIEuqmC5fBFQjZ4Sqjf4QN7Nm0Iv+Sl7O55YwFUru9A5lO J43+nFq4F45gK6l1CHESBuDKhNcuoKe12aEC79gtFA3pgKPyTuscwN96cSZeXPlnL8R0 Qq9A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=rEf4ejbpthV1S86dVzs0RdnPSjp5YJYxDnpkYt7WdcQ=; b=JIvJ9MuIoK80LpW3mZEfRI4U6+pEsDB8hu5hhsO9eInqstfzuX45RtbrAZiMwx4eA9 DCk9sHb8+5I/42xbd4aKx+ig0SE0Iteao9uZPYe9Y08U57MF9io3u5QAyXZQVV4Av56M 4juIgjduOib7GlrBS2e7oFOpTH2BQpgrr/CJpCT7aAjuvQWPp6rgEeg84QFQgHjZn6lo jnnxs+2pgp4y4Svj/lC8QHTompwNv1UUJqy7o/Em/ipXRZLUWUIjrpPyXKQ9fyHPbGW2 GEqVJDIMcjO9ztGtPuP+UvuSigL2RRy4n0CQUqJVEt0hsqopAOctgOQO6gww0DQTUHMy TL2A== X-Gm-Message-State: APjAAAXb5WFRMkP+oUpWmAB6qU1pETrwZSOhdnL6JH+DiRNyDDLMAP5d yKoojNHU15A5YtfQDgEbvBuPVW+bBzE= X-Google-Smtp-Source: APXvYqxd3A1zohMnp5iXK9hyMunRMIlDZRi3uS77Qs5hyFktGAxSMTQr+8Gc7CtUeSWa3xgZqH7adA== X-Received: by 2002:a0d:df44:: with SMTP id i65mr5462835ywe.180.1551881064322; Wed, 06 Mar 2019 06:04:24 -0800 (PST) Received: from localhost.localdomain (c-73-37-219-234.hsd1.mn.comcast.net. [73.37.219.234]) by smtp.gmail.com with ESMTPSA id r205sm859112ywb.70.2019.03.06.06.04.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 06 Mar 2019 06:04:23 -0800 (PST) From: Adam Ford To: linux-arm-kernel@lists.infradead.org Cc: Adam Ford , Rob Herring , Mark Rutland , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] ARM: DTS: imx6q-logicpd: Reduce inrush current on start Date: Wed, 6 Mar 2019 08:04:00 -0600 Message-Id: <20190306140402.17122-2-aford173@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190306140402.17122-1-aford173@gmail.com> References: <20190306140402.17122-1-aford173@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The main 3.3V regulator sources a series of additional regulators. This patch adds a small delay, so when the 3.3V regulator comes on it delays a bit before the subsequent regulators can come on. This reduces the inrush current a bit on the external DC power supply. Fixes: 1c207f911fe9 ("ARM: dts: imx: Add support for Logic PD i.MX6QD EVM") Signed-off-by: Adam Ford diff --git a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi index fb01fa6e4224..e31b6923cb72 100644 --- a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi +++ b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi @@ -99,6 +99,7 @@ regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; gpio = <&gpio1 26 GPIO_ACTIVE_HIGH>; + startup-delay-us = <70000>; enable-active-high; regulator-always-on; }; -- 2.17.1