Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp4107865imu; Mon, 10 Dec 2018 13:16:29 -0800 (PST) X-Google-Smtp-Source: AFSGD/W5QiBMzrdVeXG/sg1XQsQONEfmsEiKJfNdfdj/iOE9oAq7kH9Rc4/cd9PKKUxEzNbl9epV X-Received: by 2002:a17:902:1122:: with SMTP id d31mr15146pla.246.1544476589169; Mon, 10 Dec 2018 13:16:29 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1544476589; cv=none; d=google.com; s=arc-20160816; b=B5Hbc4D+A4gPiWOcUU4CTzSHkd2JBGYT4a1vJO332YIJ4mG98iGB+r93Qqw81hg1WS 068nOnewnIuhuHXaOemIlNLFvewbFVbtalfjthFqP6Qmc7DLygNEZnWry6pBBX8QMXC+ mgofhM+4KVwRiIuvbXQewG7V7zeX1vjDSPo3IT/6fyzfmXxC6grr64dEU/iVdYGRjGA8 d2DT2INihYMm9XJ8MPZYeAYyPu/YEu4mUTa9GJ4b+TXH6oNryjOZqkvlevJG3oopWA5d IzpxRl8AZu+qwpoMsulm1eiMTG9QdUskxvM2o3n28F3ZCoDIhJfUhsTT9ag16ZaQnbSt JUrw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=R3vckfbKaGOFqre3VzpA++cmfXTh2HrU7ttVPE4Ted4=; b=Z4bUJBxCFpRObsFXtgwvOs0xJGtp1sdlD2yW+2PYCXfGSImsXeDoisu1Eut7yBQSbi poq604tZuTbU7iJQul4P8t/GurhEac6Y8Jka2yUBOTjslMfeq05/o4twE5Or1M++86dW rtIu6/MnI056EZD+nSMkyp9OtAjXphTR+j2vyMxk2N3XHOePOtXRqUDZk1d7m5i3+5f0 GFFtdxFcTBpUA6CHMyFyEdE+17rPCJneRmEB1aQkE77fOhMSv89vLllLZ2Rg+XZ1RbL+ KQO3KyR0uLR8aMrzHomclmVW4xOaPmMPyigKvv4k4MhD4DOYTY5RspDslTibVpJND8M+ pRiQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@plaes.org header.s=mail header.b=SyfUTFuc; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i2si11224746pfi.125.2018.12.10.13.16.13; Mon, 10 Dec 2018 13:16:29 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@plaes.org header.s=mail header.b=SyfUTFuc; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728676AbeLJSmc (ORCPT + 99 others); Mon, 10 Dec 2018 13:42:32 -0500 Received: from plaes.org ([188.166.43.21]:55170 "EHLO plaes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728562AbeLJSma (ORCPT ); Mon, 10 Dec 2018 13:42:30 -0500 Received: from localhost (unknown [213.204.46.240]) by plaes.org (Postfix) with ESMTPSA id 287604195C; Mon, 10 Dec 2018 18:42:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=plaes.org; s=mail; t=1544467348; bh=rL1R6deG8R4m86FOSDKOCU7rxrxi6SE5YJnbhqg7w48=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SyfUTFucZNxHfb6zdMH+nBz7AF5svNHDzNRiiTY4Sz9vRSBQlkK6da+gAnMUei6+B cllyP3Xlc1/FqQ48+2yGeUTubaVoVdaYtzN5pHc6tj0tBTxfMxpNjCnZ+C7OYihnSE 1MT30MRD2wWYTG6V2ZItqx89sUyQ09VTCSUub/CneifpKrNKeAfkVs7fRts3UbsmdQ Cn1cLj+vKMJVoaJrEh9sKz+68FFZqTnPrg/oq26QqG4p9Q+VNGCrMv/qaugKH0jajz aNPGZPw3QAoNsOwCg5z1UR64LBDTgvia75OP4haDR2ryy7fSWN4cQ1kqIO77dnb7Uo dM37smIMKCmhw== 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 6/8] regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2 Date: Mon, 10 Dec 2018 20:42:17 +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