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=-3.6 required=3.0 tests=BAYES_00,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=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 42BE4C433DF for ; Wed, 26 Aug 2020 21:07:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0759520737 for ; Wed, 26 Aug 2020 21:07:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PtFcrHvI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726968AbgHZVHD (ORCPT ); Wed, 26 Aug 2020 17:07:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726802AbgHZVHC (ORCPT ); Wed, 26 Aug 2020 17:07:02 -0400 Received: from mail-ed1-x543.google.com (mail-ed1-x543.google.com [IPv6:2a00:1450:4864:20::543]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07C7AC061574; Wed, 26 Aug 2020 14:07:02 -0700 (PDT) Received: by mail-ed1-x543.google.com with SMTP id q21so1804777edv.1; Wed, 26 Aug 2020 14:07:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=3Os1LN7Ue+Ms9CVeN7ASmdmMTYx1HCqAOOT3/+0mXhg=; b=PtFcrHvI6+V4VyHgf02ZQVEQf/Nbjj3TPaB0qAz/abmIAwiZ2ezYJ5lgCSAGzQUAox O8FEw5ZWgrVK5GXdTTtXj2jzNV5BchVbIsaDfmpuGAXeErGEb1LbI+7rhESOvCCAuEc4 UlOfXYO/G+Cj3Y6P2OXhC+N96u3CiacF7omuraKWHo7NH4ZTIeHReQJsArfygjJnYj4b eM3Sj2pXvju6R/vwgxDsBFjRecPy+8nZ/ijvXkExngPCLaTGkNY09jN5olxpvRjOg5vB XOwDSOaqwDjuGV2T1m/bb4NKsFkEv0ADJBl6py9SjSuNvcLB2/Xj74EBekm7RYo0Z2yr ITEg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=3Os1LN7Ue+Ms9CVeN7ASmdmMTYx1HCqAOOT3/+0mXhg=; b=EMG0BwzChp+zJ5fX55pvxCOLMyPpNSYUJ2LvwHaKcEI21rkRov0pBe2iBzChnFLFTm v9fwNCD0rEgRJXnaNtekWLqvQQRehh6mjXXOIO1wT3tbFbfIo/4t7LZr4dOEDZY1qqL/ w8WV7xaRPy+xM3JTmeWpBWQ3gjXu1zJoe1FTFjQKzmHCyZjl8aISvJdsmb+5HoIltS5L dSQRoxIaVRaE8d3LERNzypdJJl1DfeNoGvYwUk5r4kpvm+S3XoA3SkSDoa3N+QZiFMcw Ad6XrClb5ff/Z1mF2K6fdMdF+XSK6gLe7xEhsQMybXlW3nHDe3Vo0A05HUesrWOU4zn5 9spw== X-Gm-Message-State: AOAM532l3MZt0TRucqovk4HKkQC/2LyA+g5koK1x8/0jZCC2dC3zq2hu K8B1rFHxWK5mwm4P9xVyat2+fmdGvV4= X-Google-Smtp-Source: ABdhPJxiegS9IXlSGKx/12qlpIj+mvTmflGrxgGgaRzu0Q6o1wRNRQgOGRIVgaLIUSuqoAihTbBPJw== X-Received: by 2002:aa7:da02:: with SMTP id r2mr4198492eds.231.1598476019749; Wed, 26 Aug 2020 14:06:59 -0700 (PDT) Received: from skbuf ([86.126.22.216]) by smtp.gmail.com with ESMTPSA id o7sm2882960edq.53.2020.08.26.14.06.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Aug 2020 14:06:59 -0700 (PDT) Date: Thu, 27 Aug 2020 00:06:57 +0300 From: Vladimir Oltean To: Mark Brown Cc: Andy Shevchenko , kuldip dwivedi , linux-spi , Linux Kernel Mailing List , Qiang Zhao , Pankaj Bansal , Varun Sethi , tanveer , "Rafael J. Wysocki" , ACPI Devel Maling List Subject: Re: [PATCH] spi: spi-fsl-dspi: Add ACPI support Message-ID: <20200826210657.z526xjhhkq6vkxgr@skbuf> References: <20200821131029.11440-1-kuldip.dwivedi@puresoftware.com> <20200822183342.6sdhp6yq6i7yvdia@skbuf> <20200826204108.reuy7ieqabutwuwo@skbuf> <20200826204547.GU4965@sirena.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200826204547.GU4965@sirena.org.uk> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 26, 2020 at 09:45:47PM +0100, Mark Brown wrote: > On Wed, Aug 26, 2020 at 11:41:08PM +0300, Vladimir Oltean wrote: > > On Wed, Aug 26, 2020 at 10:34:04PM +0300, Andy Shevchenko wrote: > > > > Theoretically you may declare your HID in the same / similar way as > > > PRP0001 and use same compatible strings and all other DT properties > > > (when they make sense and not duplicate ACPI functionality). > > > But better if ACPI people can tell you (I Cc'ed Rafael and ACPI > > > mailing list) if it is gonna work. > > > Something doesn't look right about PRP0001, what's the catch? > > Microsoft decided not to implement support for it in Windows, it's > essentially there for embedded style x86 platforms running Linux so they > don't need to reimplement so many wheels and can just reuse existing DT > bindings but it causes problems if you want to run Windows (and possibly > some of the enterprise Linux distros, I can't remember if any of them > had concerns about it) on the platform. So if a silicon vendor doesn't care about Windows, what incentive does it have to even register an official ACPI/PNP ID for its devices?