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=-7.7 required=3.0 tests=DKIM_ADSP_ALL,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 2BF6EC43441 for ; Mon, 26 Nov 2018 15:28:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E75E820865 for ; Mon, 26 Nov 2018 15:28:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=plaes.org header.i=@plaes.org header.b="ijvUyNCm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E75E820865 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=plaes.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727091AbeK0CWp (ORCPT ); Mon, 26 Nov 2018 21:22:45 -0500 Received: from plaes.org ([188.166.43.21]:49978 "EHLO plaes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726224AbeK0CWm (ORCPT ); Mon, 26 Nov 2018 21:22:42 -0500 Received: from localhost (85.253.196.132.cable.starman.ee [85.253.196.132]) by plaes.org (Postfix) with ESMTPSA id 6440E41BE1; Mon, 26 Nov 2018 15:28:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=plaes.org; s=mail; t=1543246094; bh=Am9rnwVkIRMruDgJGJutI3eHepJo6vST87U9/F3qG7Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ijvUyNCmU5cW+nEuAmw8BOCRuMCHoAmgP6YO0PQGbO350bjO528YhDYzAOZfw3jES zM5u7t1XXAL2Z2giEU0XfTzoBahEfxjZLt0J0RXbaVBXuP7eDtty+uc2i8Y1vcpkMx XFM9fwaYUiUmAWpEyQUB9Yrt/mlFzWiCQYil353USzL+fwHkr8NjZ4CSzlyyOHfWe8 JwP5tHziDLiBqbNlF1LCXScLe0mLzMJFmYIgxf2BZbNgq0bH/6hssxsvGg+CSV6FEg 6sfeq5Ul1VOOdghwtzShKuysy0/QVztGYC6RDtyFMhpIb3DuQCTHjRsrjHWxw3Xou6 tWgUUiTjqk7Zw== From: Priit Laes To: Lee Jones , Rob Herring , Mark Rutland , Chen-Yu Tsai , Maxime Ripard , Sebastian Reichel , Hans de Goede , Liam Girdwood , Mark Brown , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org Cc: Priit Laes , Olliver Schinagl Subject: [PATCH 08/14] regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2 Date: Mon, 26 Nov 2018 17:27:49 +0200 Message-Id: <3fd79fcb96c8ead9fa5a3a85a080caf00f186e36.1543245984.git-series.plaes@plaes.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Olliver Schinagl The OLinuXino Lime2 has a big capacitor on its LDO3 output. It is actually too large, causing the PMIC to shutdown when toggling the LDO3. By enabling soft-start and ramp delay we increase the time for the capacitor to charge lowering the current drain on the power regulator. Signed-off-by: Olliver Schinagl Signed-off-by: Priit Laes --- arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts index b828677..ffafe97 100644 --- a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts +++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts @@ -245,6 +245,8 @@ regulator-min-microvolt = <2800000>; regulator-max-microvolt = <2800000>; regulator-name = "vddio-csi0"; + regulator-soft-start; + regulator-ramp-delay = <1600>; }; ®_ldo4 { -- git-series 0.9.1