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=-7.6 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,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 041F2C5CFFE for ; Tue, 11 Dec 2018 15:17:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD3322084E for ; Tue, 11 Dec 2018 15:17:39 +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="oHMqxd0F" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BD3322084E 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 S1726777AbeLKPR0 (ORCPT ); Tue, 11 Dec 2018 10:17:26 -0500 Received: from plaes.org ([188.166.43.21]:59638 "EHLO plaes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726722AbeLKPRX (ORCPT ); Tue, 11 Dec 2018 10:17:23 -0500 Received: from localhost (unknown [213.204.46.240]) by plaes.org (Postfix) with ESMTPSA id E114941803; Tue, 11 Dec 2018 15:17:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=plaes.org; s=mail; t=1544541442; bh=rL1R6deG8R4m86FOSDKOCU7rxrxi6SE5YJnbhqg7w48=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oHMqxd0F9qGE6lgVaPX/rL2H9UKd/k6bbS7ymcHjc1n7JVX3kqCHbGmzlW83zr657 dkrm6dF64Vlo4XbOQsiG36/hVic4zad+njeQUjQiAUGuvyJWPquVTrpZhZEICPQCAg 6aSKkGTjrhrlyUNT504HuGdfWQmyyCLZFchBlgJMPNf/Cw2TbqKelmNoeBOU3Ej8ZA PE3LSLfW5Ow/1p/1Txn6QpijEAUw5qnaMO2MFovGFwIfSeEsS2InhdRqGdIWpd6e4i wf7wsr3aIua+RmUic2vuC4sI3zDxG4ZKrMO8Qnj0oxawQ21LE9KmcewBRQwVjm0Lj+ IhqirIZyBLPlw== From: Priit Laes To: Lee Jones , Rob Herring , Mark Rutland , Chen-Yu Tsai , Maxime Ripard , Liam Girdwood , Mark Brown , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Olliver Schinagl , linux-sunxi Cc: Priit Laes Subject: [PATCH v2 6/8] regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2 Date: Tue, 11 Dec 2018 17:17:10 +0200 Message-Id: X-Mailer: git-send-email 2.19.2 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 55c9086..4e1c590 100644 --- a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts +++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts @@ -232,6 +232,8 @@ 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