From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=linux.intel.com (client-ip=134.134.136.24; helo=mga09.intel.com; envelope-from=yong.b.li@linux.intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 453md61hVYzDqSC for ; Wed, 15 May 2019 17:38:29 +1000 (AEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 May 2019 00:38:26 -0700 X-ExtLoop1: 1 Received: from yongli3-mobl.ccr.corp.intel.com (HELO yongli3MOBL) ([10.239.196.254]) by fmsmga005.fm.intel.com with ESMTP; 15 May 2019 00:38:25 -0700 From: "Yong Li" To: "'OpenBMC Maillist'" Cc: "Li, Yong B" Subject: Get the AST2500 SCUE0/E4 value using kernel device driver? Date: Wed, 15 May 2019 15:38:25 +0800 Message-ID: <000001d50af1$2e9f3700$8bdda500$@linux.intel.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01D50B34.3CCB9EC0" X-Mailer: Microsoft Outlook 16.0 Thread-Index: AdUK77AqM7Q1f1I/Rmq5dl/vVs/hUQ== Content-Language: en-us x-ctpclassification: CTP_NT x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiYzFhNjI3YTktOTZlNS00OTQ3LWEyMjItNGFkYzE2MDcwNGY2IiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoid2M3Q2F0KzdcL0lCOTBuUlhMTU5RM3FkUllSYncwU1dKT2pkcUhrY1pwNTVoUGhwN2JQdkJ5Q1krbGtcL1hpQjNSIn0= dlp-product: dlpe-windows dlp-version: 11.0.600.7 dlp-reaction: no-action X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 May 2019 07:38:35 -0000 This is a multipart message in MIME format. ------=_NextPart_000_0001_01D50B34.3CCB9EC0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi All, Just want to know if there is any existing device driver provides the interface to get the SCUE0/E4 register values on AST2500? If no, I would like to know if there is any examples/similar drivers for reference? By the way, the two registers are used for the uptime Thanks, Yong ------=_NextPart_000_0001_01D50B34.3CCB9EC0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi All,

Just want to = know if there is any existing device driver provides the interface to = get the SCUE0/E4 register values on AST2500?

If no, I = would like to know if there is any examples/similar drivers for = reference? By the way, the two registers are used for the = uptime

Thanks,

Yong

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Received: by mailuser.nyi.internal (Postfix, from userid 501) id 326957C3E9; Thu, 16 May 2019 19:17:11 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.1.6-549-ge400f56-fmstable-20190516v3 Mime-Version: 1.0 Message-Id: In-Reply-To: <000001d50af1$2e9f3700$8bdda500$@linux.intel.com> References: <000001d50af1$2e9f3700$8bdda500$@linux.intel.com> Date: Fri, 17 May 2019 08:47:10 +0930 From: "Andrew Jeffery" To: "Yong Li" , "'OpenBMC Maillist'" Cc: "Li, Yong B" Subject: Re: Get the AST2500 SCUE0/E4 value using kernel device driver? Content-Type: text/plain X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 May 2019 23:17:17 -0000 On Wed, 15 May 2019, at 17:12, Yong Li wrote: > Hi All, > > > Just want to know if there is any existing device driver provides the > interface to get the SCUE0/E4 register values on AST2500? > > > If no, I would like to know if there is any examples/similar drivers > for reference? By the way, the two registers are used for the uptime I'm not aware of any, but I'm interested in what you're trying to measure. Are you after something that can't be satisfied by CLOCK_MONOTONIC and friends for clock_gettime()? Or is that what you're wanting to drive? Andrew > > > Thanks, > > Yong > > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=linux.intel.com (client-ip=134.134.136.24; helo=mga09.intel.com; envelope-from=yong.b.li@linux.intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 454r8J12D7zDqNT for ; Fri, 17 May 2019 11:20:46 +1000 (AEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 May 2019 18:20:43 -0700 X-ExtLoop1: 1 Received: from yongli3-mobl.ccr.corp.intel.com (HELO yongli3MOBL) ([10.239.197.31]) by fmsmga005.fm.intel.com with ESMTP; 16 May 2019 18:20:42 -0700 From: "Yong Li" To: "'Andrew Jeffery'" , "Yong Li" , "'OpenBMC Maillist'" References: <000001d50af1$2e9f3700$8bdda500$@linux.intel.com> In-Reply-To: Subject: RE: Get the AST2500 SCUE0/E4 value using kernel device driver? Date: Fri, 17 May 2019 09:20:42 +0800 Message-ID: <001401d50c4e$bf32d660$3d988320$@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Thread-Index: AdUK77AqM7Q1f1I/Rmq5dl/vVs/hUQBCr5IAABTjjyA= Content-Language: en-us x-ctpclassification: CTP_NT x-titus-metadata-40: eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiZTIxN2I4ZjYtNDhlZC00YzllLWE3ZTEtY2I5ODBlZWU2NjYwIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoib2E2cW9KalRiaXNWeVZhUXExbEZpdm1cL0hhaWNiek51ZExLaEdHdkRsWjUyMmlpUUViM000ZkdKQzRSK3R1QmUifQ== dlp-product: dlpe-windows dlp-version: 11.0.600.7 dlp-reaction: no-action X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 May 2019 01:20:49 -0000 HI Andrew, Thanks for the reply. I want to get the time from the very beginning of the AC power on, including the time spent on u-boot. My understanding is that the clock_gettime only return the Linux up time, it cannot get the delay in bootloader(u-boot). For example, the time from power on to the console login is about 65 seconds, u-boot spends 25 seconds, and Linux boot needs another 40 seconds. I want to get the total time: 65 seconds. Thanks, Yong -----Original Message----- From: Andrew Jeffery Sent: Friday, May 17, 2019 7:17 AM To: Yong Li ; 'OpenBMC Maillist' Cc: Li, Yong B Subject: Re: Get the AST2500 SCUE0/E4 value using kernel device driver? On Wed, 15 May 2019, at 17:12, Yong Li wrote: > Hi All, > > > Just want to know if there is any existing device driver provides the > interface to get the SCUE0/E4 register values on AST2500? > > > If no, I would like to know if there is any examples/similar drivers > for reference? By the way, the two registers are used for the uptime I'm not aware of any, but I'm interested in what you're trying to measure. Are you after something that can't be satisfied by CLOCK_MONOTONIC and friends for clock_gettime()? Or is that what you're wanting to drive? Andrew > > > Thanks, > > Yong > >