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=-4.0 required=3.0 tests=BAYES_00,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 47D3FC433E6 for ; Sat, 6 Mar 2021 20:37:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21A3A64F56 for ; Sat, 6 Mar 2021 20:37:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231335AbhCFUg2 (ORCPT ); Sat, 6 Mar 2021 15:36:28 -0500 Received: from mail-pj1-f49.google.com ([209.85.216.49]:36544 "EHLO mail-pj1-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231183AbhCFUgY (ORCPT ); Sat, 6 Mar 2021 15:36:24 -0500 Received: by mail-pj1-f49.google.com with SMTP id f2-20020a17090a4a82b02900c67bf8dc69so957583pjh.1; Sat, 06 Mar 2021 12:36:23 -0800 (PST) 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=kxst1hG7ALyCmuPlQ7JFD7SMZloRyR6/yTfXMK8W7T0=; b=hF159ji8oR92LgUpHS4NKAf0lpQwhTmVLmn4LNokqwj9gXSjedaXnDxYuYlxPhdVEZ GaBerzJYExH2Ad41sPwa1e+Hwi/mVuOPL8jC1zpTSbg7Ayd67+HUQtvzZSbPondtJOlF NqiTWVJkfrJLnEcOAqEn/QCLBTnoPgwRA16YPgZbZFQpiEmLnXIreeIumzYGD99BU8yT NUPIcUD1RoIabQSMnrZN+QLyFB+d8OpgKT8cDMEuopo2RKmIS9EazDh1YPOWAfu5T9ka mGyXbcLc1FaX7EfSIhYjTn4S4cliTBVjD7Gj2kl2WAdfPGYbNfr4gsqUiyg/gyicYrPQ pPKg== X-Gm-Message-State: AOAM531Y4BRjSUqPq+/oiWJcZPXKCnyVu9mfVQhYwTzoSNQKzGlXCr+H 7t+n06r5dyJ/kY4MgJV09A== X-Google-Smtp-Source: ABdhPJz0P+6rkvVUSXxTrcwxqhCKO6b8X5k2tVKedc0iXxGFF8nD+HcxsXL0EuR95YHQZyqlJKMczg== X-Received: by 2002:a17:90b:809:: with SMTP id bk9mr16677761pjb.83.1615062983602; Sat, 06 Mar 2021 12:36:23 -0800 (PST) Received: from robh.at.kernel.org ([172.58.27.98]) by smtp.gmail.com with ESMTPSA id t22sm6300886pjw.54.2021.03.06.12.36.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Mar 2021 12:36:22 -0800 (PST) Received: (nullmailer pid 1172590 invoked by uid 1000); Sat, 06 Mar 2021 20:36:17 -0000 Date: Sat, 6 Mar 2021 13:36:17 -0700 From: Rob Herring To: Shengjiu Wang Cc: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, timur@kernel.org, nicoleotsuka@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org Subject: Re: [PATCH v3 7/7] ASoC: dt-bindings: imx-rpmsg: Add binding doc for rpmsg machine driver Message-ID: <20210306203617.GA1164939@robh.at.kernel.org> References: <1614221563-26822-1-git-send-email-shengjiu.wang@nxp.com> <1614221563-26822-8-git-send-email-shengjiu.wang@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1614221563-26822-8-git-send-email-shengjiu.wang@nxp.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Feb 25, 2021 at 10:52:43AM +0800, Shengjiu Wang wrote: > Imx-rpmsg is a new added machine driver for supporting audio on Cortex-M > core. The Cortex-M core will control the audio interface, DMA and audio > codec, setup the pipeline, the audio driver on Cortex-A core side is just > to communitcate with M core, it is a virtual sound card and don't touch > the hardware. This sounds like 1 h/w block (the interface to the cortex-M), your DT should be 1 node. If you need 2 drivers to satisfy the needs of the OS, then instantiate one device from the other device's driver. Rob