From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34641C4740A for ; Sun, 6 Oct 2019 00:19:45 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E6086222C5 for ; Sun, 6 Oct 2019 00:19:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E6086222C5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=vt.edu Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=kernelnewbies-bounces@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.92.3) (envelope-from ) id 1iGuGc-0008Qb-9I; Sat, 05 Oct 2019 20:19:18 -0400 Received: from omr1.cc.ipv6.vt.edu ([2607:b400:92:8300:0:c6:2117:b0e] helo=omr1.cc.vt.edu) by shelob.surriel.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3) (envelope-from ) id 1iGuGa-0008QV-He for kernelnewbies@kernelnewbies.org; Sat, 05 Oct 2019 20:19:16 -0400 Received: from mr6.cc.vt.edu (mr6.cc.vt.edu [IPv6:2607:b400:92:8500:0:af:2d00:4488]) by omr1.cc.vt.edu (8.14.4/8.14.4) with ESMTP id x960JEaW011574 for ; Sat, 5 Oct 2019 20:19:14 -0400 Received: from mail-qk1-f200.google.com (mail-qk1-f200.google.com [209.85.222.200]) by mr6.cc.vt.edu (8.14.7/8.14.7) with ESMTP id x960J91t002736 for ; Sat, 5 Oct 2019 20:19:14 -0400 Received: by mail-qk1-f200.google.com with SMTP id n135so10834438qke.23 for ; Sat, 05 Oct 2019 17:19:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:in-reply-to:references :mime-version:content-transfer-encoding:date:message-id; bh=nAEGTNG8PGpNN/rFA3MhYJyJh8pizTM0FF7sa5GTD0U=; b=I9Worvzcfi0lm/dGNXvMo1427E13qBSXPhqUlFufCD3X1RiYLqS7ACjg2MpXZTB9h4 vpcZ+uoDwxWd0UQI3Rn7I2BeV99pyZWKTzl+fzf1M3F4MDgNpqFJxLmRzLJ67VUwbwwO EkeyT/zgOx7MKC+siDfLYe5sYUBs4t7pxc340VC9ekao8BuUpJtufcdEZPtszMyhxTJI mVjSzM3zSKRk+iII7jjMAlzbyWb5Vyidjjs0vhd2mMIKCGbR0pT4sCa2WINeiVWXvE6X x0V+/vhtNMBlX2SUuwQ5Uwk+EOw+Q76fiMSjqj+YEucSUoi5ELV7eQZkK7doD9bMAYDV +eoA== X-Gm-Message-State: APjAAAW8hLDCToSr256ma39E90iNMw3gVzrckxXlMdjUBzI/B4kJRYsu fflMAYas/UP10bkLXTFHWSjLVoGt9qgLYLcBgjGRC9wju0by4bJzI6lAMpwZz7yyP8/oU8s5xKK Lz/Yf5ie1jZlGHjQBtlL3K1T5mOZ8KNNmHCXEsSQ= X-Received: by 2002:ac8:5046:: with SMTP id h6mr23918699qtm.13.1570321149244; Sat, 05 Oct 2019 17:19:09 -0700 (PDT) X-Google-Smtp-Source: APXvYqz3VOLh66HBFk4d/1NjcEmHn8MX/18awgdp7WNDrNs0uOxsLli0hza0kcqFJhuYLJF+ovELZA== X-Received: by 2002:ac8:5046:: with SMTP id h6mr23918688qtm.13.1570321148993; Sat, 05 Oct 2019 17:19:08 -0700 (PDT) Received: from turing-police ([2601:5c0:c001:4341::9ca]) by smtp.gmail.com with ESMTPSA id o28sm4610507qkk.106.2019.10.05.17.19.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Oct 2019 17:19:07 -0700 (PDT) From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Google-Original-From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" X-Mailer: exmh version 2.9.0 11/07/2018 with nmh-1.7+dev To: Luca Ceresoli Subject: Re: Remote I/O bus In-Reply-To: <26e4a95a-8c1f-1fc3-47d3-d951e9fe503a@lucaceresoli.net> References: <20191004132210.GA714804@kroah.com> <9f619831-f27e-447e-42ea-69227f7a31d0@lucaceresoli.net> <20191004145435.GA758347@kroah.com> <442abb4b-3812-713c-67e9-9e76c45205e8@lucaceresoli.net> <154634.1570225877@turing-police> <26e4a95a-8c1f-1fc3-47d3-d951e9fe503a@lucaceresoli.net> Mime-Version: 1.0 Date: Sat, 05 Oct 2019 20:19:06 -0400 Message-ID: <220697.1570321146@turing-police> Cc: Greg KH , kernelnewbies@kernelnewbies.org X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============6395704187488473787==" Errors-To: kernelnewbies-bounces@kernelnewbies.org --===============6395704187488473787== Content-Type: multipart/signed; boundary="==_Exmh_1570321146_7127P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit --==_Exmh_1570321146_7127P Content-Type: text/plain; charset=us-ascii On Sun, 06 Oct 2019 00:29:18 +0200, Luca Ceresoli said: > BTW I guess having an FPGA external to the SoC connected via SPI or I2C > is not uncommon. Am I wrong? Look at it this way - as a practical matter, if you have an FPGA, it's probably going to be hanging off an SPI, I2C, or PCI. And if you're an SoC, especially at the low end, PCI may be too much silicon to bother with. Oddly enough, I've not seen any FPGA over USB. That of course doesn't mean that some maniac hasn't tried to do it.... :) --==_Exmh_1570321146_7127P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Comment: Exmh version 2.9.0 11/07/2018 iQIVAwUBXZky+gdmEQWDXROgAQIxmA//TOuNecg7TJhk6RBJ7U2FuSFr2HTpUObB dWE8x5d4yuRiKqT+3FG7JLhuZ4Ni+xu9bCSJ4fP39uP9PckRTJWkJ1ZJoXkcrWPE rmSUcUjL8ZwYn0hFxGigUZzfTqsiyuO7GcCMfOHke80l9Q210URU4NCuCuFJtOw0 XSvnq+6Z9ekSSDo83TIIxsNONt5L3k+tozGOefMUe9F5QspLRsIEHcB9H5GKyuoq 00Gx0pfuiGkv6jOmhf1phCHL+4RHR8lwXt16N+qs56KJU3v5h9WtrsZDMmOJes7N k0Sod3Ng6TuhQ5HHHvQqGEKl0jJDwdoywO8/oaCyRZInoePIekwIoflkP4nQCC+F bbWbP5GbDu5NmyonvpyTUSwnVi7JeFBCndJXFdyONrkSFS82KmTzBlwRfYePAAA6 LrBj2+YN3nx0YJSD49uE37eGL4AhJ0rHXHxxJBDw2FsFv9Dh1iWCdgJZxiCN/kTT 4/rJatBBqMr/NGjM4DuRjlMZYuLn5EIHoGYcnmwGGbZdDrjHO7M4qzT+sgjmGRXk GstNu0+/7ee07U5RgU4D1A4Y0DOEB0NK2z0pNrft/HvEqlAln8dAIstN7EtBRhW6 y59HEErGXAEgYV1IerH5XYqaO4LoAW4bFtRpcJFHbXkBh4CByBsfNgUMPuxzkC8K 3PPrKq1HnM0= =CSWn -----END PGP SIGNATURE----- --==_Exmh_1570321146_7127P-- --===============6395704187488473787== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies --===============6395704187488473787==--