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[209.132.180.67]) by mx.google.com with ESMTP id s20si3821677otq.28.2020.01.09.01.11.53; Thu, 09 Jan 2020 01:12:06 -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=pass header.i=@kernel.org header.s=default header.b="2v03/I4m"; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729000AbgAIJKC (ORCPT + 99 others); Thu, 9 Jan 2020 04:10:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:58308 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728605AbgAIJKB (ORCPT ); Thu, 9 Jan 2020 04:10:01 -0500 Received: from T480 (98.142.130.235.16clouds.com [98.142.130.235]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EEAF820673; Thu, 9 Jan 2020 09:09:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578561001; bh=haZEqFJpGZtGMsjVB13sXDjxCq2aK0w6Eef5tnBpYpQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=2v03/I4mCgexgzf5xwrck+WPVo8KiwMI2YiJmYh28wkaiogxsAYRtgA5mrhq46/0i dxgxlyrmYDXAwKeEbmGPIDf5i8YdPOD60zvADN+yhhszuD1dGr0YT6ndAAkbrlq3HB xUk/r87D8k6nhOtUgwmpDAQrIXlygmqjLN53Ro/s= Date: Thu, 9 Jan 2020 17:09:51 +0800 From: Shawn Guo To: Anson Huang Cc: "robh+dt@kernel.org" , "mark.rutland@arm.com" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "andreas@kemnade.info" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , dl-linux-imx Subject: Re: [PATCH 1/5] ARM: dts: imx6qdl-sabresd: Remove incorrect power supply assignment Message-ID: <20200109090950.GJ4456@T480> References: <1577670071-1322-1-git-send-email-Anson.Huang@nxp.com> <20200109080600.GH4456@T480> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 09, 2020 at 08:25:03AM +0000, Anson Huang wrote: > Hi, Shawn > > > Subject: Re: [PATCH 1/5] ARM: dts: imx6qdl-sabresd: Remove incorrect > > power supply assignment > > > > On Mon, Dec 30, 2019 at 09:41:07AM +0800, Anson Huang wrote: > > > The vdd3p0's input should be from external USB VBUS directly, NOT > > > > Shouldn't USB VBUS usually be 5V? It doesn't seem to match 3.0V which is > > suggested by vdd3p0 name. > > > > > PMIC's sw2, so remove the power supply assignment for vdd3p0. > > > > > > Fixes: 93385546ba36 ("ARM: dts: imx6qdl-sabresd: Assign corresponding > > > power supply for LDOs") > > > > Is it only a description correcting or is it fixing a real problem? I'm trying to > > understand it is a 5.5-rc material or can be applied for 5.6. > > > > It is fixing a real problem about USB LDO voltage, that is why we noticed this issue. Okay, please describe the problem a little bit in the commit log. Also squash the series into one patch, which is easier to be merged into -rc as a fix. My question above that USB VUBS is 5V which doesn't match 3.0V suggested by vdd3p0 name remains unaddressed though. Shawn