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=-8.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 588FEC433E0 for ; Sun, 5 Jul 2020 18:24:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2721620739 for ; Sun, 5 Jul 2020 18:24:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="n0lkTyHt" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2721620739 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=po+5lXP3/MUVzphtn1Kx3GEEBnF9od3RaAA3VENxyKM=; b=n0lkTyHtR2bWP7ZqP7w5pGEKN 7SSa19Uw+OQdzpkwd+q8V3dv5xXIWvPrbVmnFCgZdorO6/rP2UaJeSzfrGm0ANKP92jarApAjufgI WE8L5hRfYvrd5GCLHSwQI+2XECtyWGBIy/HpOd61oM6JU0b6k1ui1giBkzsAFGFgafdDAdniZyRf+ 7rtHC8K8T00isMxhLCgJ2w+KzYdu1FPN9AY+OCjknWfa/cyE4mQovxy1YWSdyj760h0mqtrbQuVIm R63Xg7Syu5ALxdNctmlAz1F0TU6I5V0KpB3JdgRk0+VrW3k7M6FmGO+DqPTCQT+1yjZd5wT3KPqHf 8iYTkgNpg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1js9IF-0003hX-UX; Sun, 05 Jul 2020 18:23:11 +0000 Received: from mail-wm1-f67.google.com ([209.85.128.67]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1js9IE-0003hD-JS for linux-arm-kernel@lists.infradead.org; Sun, 05 Jul 2020 18:23:11 +0000 Received: by mail-wm1-f67.google.com with SMTP id f18so39315802wml.3 for ; Sun, 05 Jul 2020 11:23:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=3ewSbHGUAYFQOAlLNlmtHPlZwLMl/ZdY7qWT4Kwd5Vw=; b=f3FP2gQ3rVFDqIADn23MNEI7veQSvw/Ek2RMUZyInJRhIB//I8N+hEC0C0T/QT0eNR 9/zT4Lly1P7tzL0dU06CO9HLFKLw6t1IYWsEcHut9uj+0g4Wn8WoDiqN7teVb3SoCL2F HW7lM6ru4DoKBp0GjpH7nWPzaDN/pzBifS4YmpHN9XuK5biQomolSMouLmETqMlTK4sC O++tDM2LLPO2B/f0/xPsCzrnunnRoq8zzsAFLS8MY3We7p4b+0Vg4KWK5+Xv23KFVv8l cB1opQqyiNZ+O0jGe1MM1ETOh4cXT2Fzv6o6MUGVC2WZc1EJCwVLNA6UXVFYE4k78j6i HTiw== X-Gm-Message-State: AOAM533hPDX5qslidByDE1VPLwRDMiG/Q4jDDvC+cft6A04dVmc5mXVp +gS90hm30mPOdb5BRv+HC/8= X-Google-Smtp-Source: ABdhPJxf+h2deTZ0d1sNxH1w2pDDNt/UiEgEEdWTSth3T5lJVshwp5A+S2mwSPC8Fv2zMDbUvcbUIg== X-Received: by 2002:a1c:7216:: with SMTP id n22mr40486802wmc.189.1593973389531; Sun, 05 Jul 2020 11:23:09 -0700 (PDT) Received: from kozik-lap ([194.230.155.195]) by smtp.googlemail.com with ESMTPSA id v11sm57523694wmb.3.2020.07.05.11.23.08 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sun, 05 Jul 2020 11:23:08 -0700 (PDT) Date: Sun, 5 Jul 2020 20:23:06 +0200 From: Krzysztof Kozlowski To: Alim Akhtar Subject: Re: [PATCH v1 2/2] arm64: dts: exynos: keep LDO12 always-on Message-ID: <20200705182306.GA13827@kozik-lap> References: <20200705070918.63531-1-alim.akhtar@samsung.com> <20200705070918.63531-2-alim.akhtar@samsung.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200705070918.63531-2-alim.akhtar@samsung.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200705_142310_676791_579603D1 X-CRM114-Status: GOOD ( 16.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: robh+dt@kernel.org, devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sun, Jul 05, 2020 at 12:39:18PM +0530, Alim Akhtar wrote: > LDO12 on exynos7 supply power to VDDQ_UFS20_RESET, > in case this regulator is OFF, UFS host controller > can not send command to UFS device. To keep this supply > ON, set regulator-always-on property for this ldo. Why UFS does not take any supplies? This looks like a workaround for the case of not implementing any consumer. Best regards, Krzysztof > > Signed-off-by: Alim Akhtar > --- > arch/arm64/boot/dts/exynos/exynos7-espresso.dts | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts > index bb86950032d3..92fecc539c6c 100644 > --- a/arch/arm64/boot/dts/exynos/exynos7-espresso.dts > +++ b/arch/arm64/boot/dts/exynos/exynos7-espresso.dts > @@ -194,6 +194,7 @@ > regulator-min-microvolt = <1000000>; > regulator-max-microvolt = <1300000>; > regulator-enable-ramp-delay = <125>; > + regulator-always-on; > }; > > ldo13_reg: LDO13 { > -- > 2.17.1 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel