linux-kernel - Re: [PATCH v4 02/12] [media] cxd2880-spi: Add support for CXD2880 SPI interface

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <eab5bd7b-d909-343d-7078-842e3d0d9ab9@sony.com>
Date:   Fri, 13 Oct 2017 18:10:31 +0900
From:   "Takiguchi, Yasunari" <Yasunari.Takiguchi@...y.com>
To:     Honza Petrouš <jpetrous@...il.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "tbird20d@...il.com" <tbird20d@...il.com>,
        "frowand.list@...il.com" <frowand.list@...il.com>,
        "Yamamoto, Masayuki" <Masayuki.Yamamoto@...y.com>,
        "Nozawa, Hideki (STWN)" <Hideki.Nozawa@...y.com>,
        "Yonezawa, Kota" <Kota.Yonezawa@...y.com>,
        "Matsumoto, Toshihiko" <Toshihiko.Matsumoto@...y.com>,
        "Watanabe, Satoshi (SSS)" <Satoshi.C.Watanabe@...y.com>,
        <yasunari.takiguchi@...y.com>
Subject: Re: [PATCH v4 02/12] [media] cxd2880-spi: Add support for CXD2880 SPI
 interface

Hi Honza

> If I understand it right, it uses SPI bus also for passing transport stream
> to the host system (also having some pid piltering inside!), isn't it?
> It would be interesting to know what is the max throughput of the CXD's SPI?

Yes, max clock rate of spi is written in sony-cxd2880.txt of [patch v4 01/12].

  spi-max-frequency = <55000000>; /* 55MHz */

Takiguchi