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Tue, 19 Mar 2019 06:51:32 -0700 Received: from [127.0.0.1] (helo=localhost) by xsj-pvapsmtp01 with smtp (Exim 4.63) (envelope-from ) id 1h6F9L-0005dQ-32; Tue, 19 Mar 2019 06:51:27 -0700 Received: from xsj-pvapsmtp01 (xsj-smtp1.xilinx.com [149.199.38.66]) by xsj-smtp-dlp1.xlnx.xilinx.com (8.13.8/8.13.1) with ESMTP id x2JDpQXI020604; Tue, 19 Mar 2019 06:51:26 -0700 Received: from [172.30.17.111] by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from ) id 1h6F9J-0005cu-PK; Tue, 19 Mar 2019 06:51:25 -0700 Subject: Re: [PATCH 00/12] misc: xilinx sd-fec driver To: Dragan Cvetic , "arnd@arndb.de" , "gregkh@linuxfoundation.org" , "linux-arm-kernel@lists.infradead.org" References: <1552997064-432700-1-git-send-email-dragan.cvetic@xilinx.com> <5f1d4915-27ad-0cdc-a174-98f88f36a762@xilinx.com> From: Michal Simek Message-ID: Date: Tue, 19 Mar 2019 14:51:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-RCIS-Action: ALLOW X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.100; 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Ip=[149.199.60.100]; Helo=[xsj-pvapsmtpgw02] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR02MB5916 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190319_065137_964412_F45927DA X-CRM114-Status: GOOD ( 15.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Derek Kiernan , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 19. 03. 19 14:44, Dragan Cvetic wrote: > > >> -----Original Message----- >> From: Michal Simek [mailto:michal.simek@xilinx.com] >> Sent: Tuesday 19 March 2019 12:18 >> To: Dragan Cvetic ; arnd@arndb.de; gregkh@linuxfoundation.org; Michal Simek ; linux- >> arm-kernel@lists.infradead.org >> Cc: linux-kernel@vger.kernel.org; Derek Kiernan >> Subject: Re: [PATCH 00/12] misc: xilinx sd-fec driver >> >> On 19. 03. 19 13:04, Dragan Cvetic wrote: >>> This patchset is adding the full Soft Decision Forward Error >>> Correction (SD-FEC) driver implementation, driver DT binding and >>> driver documentation. >>> >>> Forward Error Correction (FEC) codes such as Low Density Parity >>> Check (LDPC) and turbo codes provide a means to control errors in >>> data transmissions over unreliable or noisy communication >>> channels. The SD-FEC Integrated Block is an optimized block for >>> soft-decision decoding of these codes. Fixed turbo codes are >>> supported directly, whereas custom and standardized LDPC codes >>> are supported through the ability to specify the parity check >>> matrix through an AXI4-Lite bus or using the optional programmable >>> (PL)-based support logic. For the further information see >>> https://www.xilinx.com/support/documentation/ip_documentation/ >>> sd_fec/v1_1/pg256-sdfec-integrated-block.pdf >>> >>> This driver is a platform device driver which supports SDFEC16 >>> (16nm) IP. SD-FEC driver supports LDPC decoding and encoding and >>> Turbo code decoding. LDPC codes can be specified on >>> a codeword-by-codeword basis, also a custom LDPC code can be used. >>> >>> The SD-FEC driver exposes a char device interface and supports >>> file operations: open(), close(), poll() and ioctl(). The driver >>> allows only one usage of the device, open() limits the number of >>> driver instances. The driver also utilize Common Clock Framework >>> (CCF). >>> >>> The control and monitoring is supported over ioctl system call. >>> The features supported by ioctl(): >>> - enable or disable data pipes to/from device >>> - configure the FEC algorithm parameters >>> - set the order of data >>> - provide a control of a SDFEC bypass option >>> - activates/deactivates SD-FEC >>> - collect and provide statistical data >>> - enable/disable interrupt mode >>> >>> Poll can be utilized to detect errors on IRQ trigger rather than >>> using looping status and stats ioctl's. >>> >>> Reviewed-by: Michal Simek >> >> I am not using this tag a lot that's why I am curious where you got it >> from? I can't see it in Xilinx tree too. >> >> Thanks, >> Michal > > It is copied from the email address in Outlook. I'll correct this to michals@xilinx.com. It is not about email address. It is about meaning of that line. I have never done deep review of this driver that you can put here my tag that I have reviewed that. It means you should remove all these lines from all patches were you put it because I have never gave you this tag. Thanks, Michal _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel