Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756587AbcCXICo (ORCPT ); Thu, 24 Mar 2016 04:02:44 -0400 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:35321 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751419AbcCXICg (ORCPT ); Thu, 24 Mar 2016 04:02:36 -0400 Date: Thu, 24 Mar 2016 15:58:40 +0800 From: Jisheng Zhang To: Krzysztof Kozlowski , Ulf Hansson , Adrian Hunter , CC: "Ivan T. Ivanov" , , , , "Jaehoon Chung" Subject: Re: Warnings for invalid VDD (sdhci-s3c) Message-ID: <20160324155840.50474b98@xhacker> In-Reply-To: References: X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-03-24_04:,, signatures=0 X-Proofpoint-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1601100000 definitions=main-1603240125 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 568 Lines: 20 Hi, On Thu, 24 Mar 2016 16:28:56 +0900 Krzysztof Kozlowski wrote: > Hi, > > After 918f4cbd4340 ("mmc: sdhci: restore behavior when setting VDD via > external regulator") On Trats2 board I see warnings for invalid VDD > value (2.8V): > > [ 3.119656] ------------[ cut here ]------------ > [ 3.119666] WARNING: CPU: 3 PID: 90 at > ../drivers/mmc/host/sdhci.c:1234 sdhci_do_set_ios+0x4cc/0x5e0 > [ 3.119669] mmc0: Invalid vdd 0x10 Per my understanding, the wrong vdd indicates a wrong ocr, what's the voltage of this host's vmmc regulator? Thanks, Jisheng