From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757539AbbA0EH6 (ORCPT ); Mon, 26 Jan 2015 23:07:58 -0500 Received: from bh-25.webhostbox.net ([208.91.199.152]:57476 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751579AbbA0EH4 (ORCPT ); Mon, 26 Jan 2015 23:07:56 -0500 Message-ID: <54C70F17.7070003@roeck-us.net> Date: Mon, 26 Jan 2015 20:07:51 -0800 From: Guenter Roeck User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Jisheng Zhang , Doug Anderson CC: Wim Van Sebroeck , Heiko Stuebner , Lunxue Dai , Dinh Nguyen , "linux-watchdog@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 1/2] watchdog: dw_wdt: pat the watchdog before enabling it References: <1421882243-3631-1-git-send-email-dianders@chromium.org> <20150122132200.4729d38b@xhacker> <20150126142210.4cd0b33f@xhacker> <20150127114403.71736c3f@xhacker> In-Reply-To: <20150127114403.71736c3f@xhacker> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated_sender: linux@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-CTCH-PVer: 0000001 X-CTCH-Spam: Unknown X-CTCH-VOD: Unknown X-CTCH-Flags: 0 X-CTCH-RefID: str=0001.0A020201.54C70F1B.0071,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-Score: 0.001 X-CTCH-ScoreCust: 0.000 X-CTCH-Rules: C_4847, X-CTCH-SenderID: linux@roeck-us.net X-CTCH-SenderID-Flags: 0 X-CTCH-SenderID-TotalMessages: 1 X-CTCH-SenderID-TotalSpam: 0 X-CTCH-SenderID-TotalSuspected: 0 X-CTCH-SenderID-TotalConfirmed: 0 X-CTCH-SenderID-TotalBulk: 0 X-CTCH-SenderID-TotalVirus: 0 X-CTCH-SenderID-TotalRecipients: 0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: mailgid no entry from get_relayhosts_entry X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/26/2015 07:44 PM, Jisheng Zhang wrote: > Dear Doug, > > On Mon, 26 Jan 2015 09:01:37 -0800 > Doug Anderson wrote: > >> Jisheng, >> >> On Sun, Jan 25, 2015 at 10:22 PM, Jisheng Zhang wrote: >>>> Specifically I see the register WDT_TORR that has an offset of 0x4. >>>> That's the RANGE_REG in your code. It shows bits 3:0 set the timeout >>>> period (0 = 0xffff and 15 = 0x7fffffff). It shows bits 31:4 as >>>> "reserved". >>> >>> Could you please dump registers' value at offset 0xf4 and 0xf8 if you >>> don't mind? >> >> Those are not documented in the user manual that I have, but: >> >>>>> r(0xff8000f4) >> 0x10000a02 >>>>> r(0xff8000f8) >> 0x3130332a > Hi Jisheng, This translates to ascii "103*". How does it translate to "1.02a" ? > Thanks. Now I got some information about your platform: > > wdt version: v1.02a > > WDT_DUAL_TOP is configured as false, so there's no TOP_INIT > WDT_DFLT_TOP is configured as 0, so it will timeout soon. > Any chance you can provide the bit map for the register reporting those flags ? Thanks, Guenter