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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 E3A63C31E51 for ; Tue, 18 Jun 2019 12:01:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B7A7F20B1F for ; Tue, 18 Jun 2019 12:01:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="EZbHQj3x" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729216AbfFRMBp (ORCPT ); Tue, 18 Jun 2019 08:01:45 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:55798 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726091AbfFRMBo (ORCPT ); Tue, 18 Jun 2019 08:01:44 -0400 Received: by mail-wm1-f66.google.com with SMTP id a15so2943306wmj.5; Tue, 18 Jun 2019 05:01:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:openpgp:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=oj9R2h7PLbPIbssfUEZGisJttd/OMEPsCeLkAVDP4/k=; b=EZbHQj3xMGBqj9Q9GX/wU+YiLHLfXk+cdZg7gRWU9n/Y8XEhWmFdCUR+bTHZJ5cSvc KUzll32D21EfZi+MHAOH8vq6rbY/m6fHvYeohptFvTxOqEC386rTUHlyh0nKeIiNS4Wl friRRybP9vG4hZB0omRydPP9Df6NCF/z8lJ6CQI0q0ic5hPulqLbxUA9E/iHUvRnx8Jc Sw0myf5f4DlMTs4nLW166v7sL6iQKANBux9MRMDV7Sp1REbzRVLEOiXzF5vPZc3paY8z VmxE9Pz38snaHNywmkwY+N9aNhb+KCistFLoqqkBjRZoe+xNrX0XRa6FcexZ8mcB2SjF tEWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=oj9R2h7PLbPIbssfUEZGisJttd/OMEPsCeLkAVDP4/k=; b=OE+BbU1k7+YIRLQSSeMZE3QJmiSFVsb7MewbmYBEjmcjmQgzGPXcgqazvs8AB1KoQw ZzxDFll1pLan/Sc8rCyvEsoFjpI+H2bpNXg64p+4PTblRSyV7WU7I6my1g0D/IH1WKHi Ycwa4M51aneIHWJKqUdb+d2yx5fbxC50WFbs/g4eq7WO05ShWkLpAQ8OC9ndIWer3+c6 d3j9ursqgMmLxdxwqyk09PZ+YrPOZI6lofPgWSJpA6a2OspGsQ9SzcZ1WOqlE3I0UhkC tqDcy+4PFZSg8ZrCo99YBKPJXcNPM9e4P2M8qkJCIVeTpAM/fk7zpuxckIAB2XfMwFes VBbg== X-Gm-Message-State: APjAAAUIQpRk2w2WCYlMeElGbbLZfE+wkj7RYgShfHF1fctMYnEZnCIo CINaYov5qCQEphfquSchA2s= X-Google-Smtp-Source: APXvYqzsfBn5Vi+/8ppaMw0HGNWkGiV0h3v4+fwxzpiUXMBe6NlmaVTpFJobraD+wboFQBeWNXiMJQ== X-Received: by 2002:a1c:3c8a:: with SMTP id j132mr3279580wma.172.1560859301896; Tue, 18 Jun 2019 05:01:41 -0700 (PDT) Received: from [192.168.1.4] (ip-86-49-110-70.net.upcbroadband.cz. [86.49.110.70]) by smtp.gmail.com with ESMTPSA id r12sm21413531wrt.95.2019.06.18.05.01.40 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Tue, 18 Jun 2019 05:01:41 -0700 (PDT) Subject: Re: [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings To: masonccyang@mxic.com.tw, Lee Jones Cc: bbrezillon@kernel.org, broonie@kernel.org, devicetree@vger.kernel.org, Geert Uytterhoeven , Simon Horman , juliensu@mxic.com.tw, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-spi@vger.kernel.org, mark.rutland@arm.com, miquel.raynal@bootlin.com, robh+dt@kernel.org, Sergei Shtylyov References: <1558423174-10748-1-git-send-email-masonccyang@mxic.com.tw> <1558423174-10748-4-git-send-email-masonccyang@mxic.com.tw> <0e2994d6-6efc-9f36-f681-609199f20b9f@cogentembedded.com> <20190603130428.GX4797@dell> <02addf64-9f6e-ccc1-2f94-8983456e3ebc@cogentembedded.com> From: Marek Vasut Openpgp: preference=signencrypt Message-ID: <2671d488-82a1-8720-d9a1-03554d955a38@gmail.com> Date: Tue, 18 Jun 2019 14:01:40 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/6/19 9:40 AM, masonccyang@mxic.com.tw wrote: [...] > RPC-IF works either in SPI or HyperFlash is decided by external hardware > pins > configuration and it can NOT switch it's operation mode in the run time. > This is not like my understanding of MFD. Which external hardware pins decide the RPC configuration ? It seems to me like PHYCNT register, PHYMEM bitfield, selects what device is connected, and then a couple of other bits control the communication, but I see nothing which would be tied to any external configuration pins. [...] -- Best regards, Marek Vasut