> -----Original Message----- > From: Michal Simek [mailto:michal.si...@xilinx.com] > Sent: Tuesday 19 March 2019 12:18 > To: Dragan Cvetic <drag...@xilinx.com>; a...@arndb.de; > gre...@linuxfoundation.org; Michal Simek <mich...@xilinx.com>; linux- > arm-ker...@lists.infradead.org > Cc: linux-kernel@vger.kernel.org; Derek Kiernan <dkier...@xilinx.com> > 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 <michal.si...@xilinx.com> > > 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 mich...@xilinx.com. Thanks Dragan
