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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 5536BC4360C for ; Sun, 6 Oct 2019 09:20:27 +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 0D21A206C2 for ; Sun, 6 Oct 2019 09:20:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=kroah.com header.i=@kroah.com header.b="A0oNZFc6"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="U9r/diQ7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D21A206C2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kroah.com Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=kernelnewbies-bounces+kernelnewbies=archiver.kernel.org@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.92.3) (envelope-from ) id 1iH2iH-0000pp-N1 for kernelnewbies@archiver.kernel.org; Sun, 06 Oct 2019 05:20:25 -0400 Received: from out5-smtp.messagingengine.com ([66.111.4.29]) by shelob.surriel.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3) (envelope-from ) id 1iH2gX-00074a-EA for kernelnewbies@kernelnewbies.org; Sun, 06 Oct 2019 05:18:37 -0400 Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id ABE1720D2B; Sun, 6 Oct 2019 05:18:33 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute6.internal (MEProxy); Sun, 06 Oct 2019 05:18:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kroah.com; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=fm2; bh=HoGKjVmBcQ11dZ7GQpo3rErn11+ XMR9ZOVIlNrZFDsM=; b=A0oNZFc6IQJKJ7d5YHnDwVzOG4xg90D2fB361aMjVyT nrd4hsN8CdrEedWTf1LX8bUHbYvuPIE+sTaxQfCbk9s0q7epRPT22lMA25bIiwl9 fYMNNj7lg0fIlbP8Pn0EN15u40FFGKc9I4EDtbFOYKMcBUracro7Ted77Ikc7wHu l96KFUqx6oelpNmYrmVQq2WYyZaKwyz/bf6H8IQrF/+eFoUOpgN2KfgsXpIzOi8j L4qUui+4g3gJ3OuYX6o1LTi6QdQ3J9VgmKaLg3p90uvvDBhUfKhf2jGRxQJnlsVc /uvg6QNBM0grJ0cZKDFb0CGfsW8vjN0pEhoakMyflng== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=HoGKjV mBcQ11dZ7GQpo3rErn11+XMR9ZOVIlNrZFDsM=; b=U9r/diQ7atskQdnqq3YbKP c+WsViOuo41hXFXapx/WEp7cmQzARvEPiFwNVIOfRbzWlX+gxhky6jRKepdW2aze 04QHshoZNA+otd2Nn+PsyCdVrvieEi/OQ5Jf2EVqOhRt9axOPm/iPfXIBlT4e/zG 1B9aPlfVRMDX7YmOE6TNi7LCy0WoT2MZNs92MdMlvOEOsLoTfTY7Ol4QA/6zGAs1 CLOpZBJmfTLm/AWOB6Bs5FxuddbZFPGGuiICEmsij0fpn7PCY2RHCqmX0B12klfL 6zvheSUPLnfHHcqqrEK7B3JwseWw/U+abqcUci0/vb+fnnyyzpkYDXrnWghl/F0A == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedufedrheehgdduiecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpeffhffvuffkfhggtggujggfsehttdertddtredvnecuhfhrohhmpefirhgvghcu mffjuceoghhrvghgsehkrhhorghhrdgtohhmqeenucfkphepkeefrdekiedrkeelrddutd ejnecurfgrrhgrmhepmhgrihhlfhhrohhmpehgrhgvgheskhhrohgrhhdrtghomhenucev lhhushhtvghrufhiiigvpedt X-ME-Proxy: Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) by mail.messagingengine.com (Postfix) with ESMTPA id D50E980059; Sun, 6 Oct 2019 05:18:32 -0400 (EDT) Date: Sun, 6 Oct 2019 11:18:28 +0200 From: Greg KH To: Luca Ceresoli Subject: Re: Remote I/O bus Message-ID: <20191006091828.GA2746237@kroah.com> 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 Content-Disposition: inline In-Reply-To: <26e4a95a-8c1f-1fc3-47d3-d951e9fe503a@lucaceresoli.net> User-Agent: Mutt/1.12.2 (2019-09-21) Cc: Valdis =?utf-8?Q?Kl=C4=93tnieks?= , 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: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kernelnewbies-bounces+kernelnewbies=archiver.kernel.org@kernelnewbies.org On Sun, Oct 06, 2019 at 12:29:18AM +0200, Luca Ceresoli wrote: > BTW I guess having an FPGA external to the SoC connected via SPI or I2C > is not uncommon. Am I wrong? Not uncommon at all, look at the drivers/fpga/ subsystem for a standard way to access those types of chips with a standard api. greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies