Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755222AbcCXIJq (ORCPT ); Thu, 24 Mar 2016 04:09:46 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:49321 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751454AbcCXIJe (ORCPT ); Thu, 24 Mar 2016 04:09:34 -0400 X-AuditID: cbfee68d-f79646d000001355-f2-56f3a0b753ae Message-id: <56F3A0B7.4050509@samsung.com> Date: Thu, 24 Mar 2016 17:09:27 +0900 From: Jaehoon Chung User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-version: 1.0 To: Jisheng Zhang , Krzysztof Kozlowski , Ulf Hansson , Adrian Hunter , ludovic.desroches@atmel.com Cc: "Ivan T. Ivanov" , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org Subject: Re: Warnings for invalid VDD (sdhci-s3c) References: <20160324155840.50474b98@xhacker> In-reply-to: <20160324155840.50474b98@xhacker> Content-type: text/plain; charset=windows-1252 Content-transfer-encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrPIsWRmVeSWpSXmKPExsWyRsSkUHfHgs9hBv/vMFmcfLKGzeLy/Jns Fu+O72axeP3C0OLyrjlsFkf+9zNazDi/j8ni0Mxki+Nrwx04PRb82srisXjPSyaPO9f2sHlM XniR2aNvyypGj8+b5ALYorhsUlJzMstSi/TtErgyrhx5x1pwgK2iZ/cFtgbGLtYuRg4OCQET id6vil2MnECmmMSFe+vZuhi5OIQEVjBKvHy2hBEiYSJx+vYjqMRSRonPe28wQzgPGCW2X5vP DlLFK6AlsX/JNSYQm0VAVWLlgWksIDabgI7E9m/HweKiAmESD9btZYWoF5T4MfkeC8ggEYET jBLn7pwHc5gFuhklth15B9YtLGAo0Tv9DtgdQgJlEq9/TACbxCmgJ/H1YBM7yA/MQPb9i1og YWYBeYnNa96CXSch8JJd4u4fmIsEJL5NPsQC8bOsxKYDzBCvSUocXHGDZQKj2CwkN81CmDoL ydQFjMyrGEVTC5ILipPSiwz1ihNzi0vz0vWS83M3MQLj8fS/Z707GG8fsD7EKMDBqMTD28Dx OUyINbGsuDL3EKMp0BETmaVEk/OBUZ9XEm9obGZkYWpiamxkbmmmJM6rKPUzWEggPbEkNTs1 tSC1KL6oNCe1+BAjEwenVAPj3b7G24va1j5fsEnjsI1AQ0XLcoawEpnV67/M0YvOaVl64PCH F+zCPPu27l1g8ehenfUSdiuepjcVx/at7H9ceaJKXu/R62lmFSaS3SdUOrtli5seNXbELZBg edmu3yVWNmln4DWJntpSVb4r7xWFixx0YvVmbhZ6dYJTOMPEd6/JiqsrVd8osRRnJBpqMRcV JwIAwNzTuMICAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrLIsWRmVeSWpSXmKPExsVy+t9jAd3tCz6HGSw/bmVx8skaNovL82ey W7w7vpvF4vULQ4vLu+awWRz5389oMeP8PiaLQzOTLY6vDXfg9FjwayuLx+I9L5k87lzbw+Yx eeFFZo++LasYPT5vkgtgi2pgtMlITUxJLVJIzUvOT8nMS7dV8g6Od443NTMw1DW0tDBXUshL zE21VXLxCdB1y8wBuklJoSwxpxQoFJBYXKykb4dpQmiIm64FTGOErm9IEFyPkQEaSFjDmHHl yDvWggNsFT27L7A1MHaxdjFyckgImEicvv2IDcIWk7hwbz2QzcUhJLCUUeLz3hvMEM4DRont 1+azg1TxCmhJ7F9yjQnEZhFQlVh5YBoLiM0moCOx/dtxsLioQJjEg3V7WSHqBSV+TL7HAjJI ROAEo8S5O+fBHGaBbkaJbUfegXULCxhK9E6/wwhiCwmUSbz+MQFsEqeAnsTXg01AmzmAGvQk 7l/UAgkzC8hLbF7zlnkCo8AsJDtmIVTNQlK1gJF5FaNEakFyQXFSeq5RXmq5XnFibnFpXrpe cn7uJkZw1D+T3sF4eJf7IUYBDkYlHt4bXJ/DhFgTy4orcw8xSnAwK4nw8tUBhXhTEiurUovy 44tKc1KLDzGaAgNhIrOUaHI+MCHllcQbGpuYGVkamRtaGBmbK4nzPv6/LkxIID2xJDU7NbUg tQimj4mDU6qBUSf29UlOozU8vvf2NmatDBQ//nbuju5J8bIbNEVcrux/n60d2Vri4CJ9YWbm gd9SjnYfgmy1Zq34eND79g/ZjIM7kgIvcrWLevDXdOocZRLM2i4ZVlwqrJ87canfwYzjOv8k vz0PrtBRqmNPulwpNEGMrdl6Q9VKD4lNNtfZzXfqGvZYfcxTYinOSDTUYi4qTgQABihpKBAD AAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 799 Lines: 31 Hi, On 03/24/2016 04:58 PM, Jisheng Zhang wrote: > 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? As i know, it's fixed-voltage with gpio on trats2. It's 2.8V. I didn't check this entirely..need to check ocr value. Best Regards, Jaehoon Chung > > Thanks, > Jisheng > >