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=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 CB524C433E0 for ; Fri, 15 May 2020 10:02:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A45942065C for ; Fri, 15 May 2020 10:02:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="r8YCpftd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727999AbgEOKCN (ORCPT ); Fri, 15 May 2020 06:02:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727927AbgEOKCM (ORCPT ); Fri, 15 May 2020 06:02:12 -0400 Received: from mail-qt1-x841.google.com (mail-qt1-x841.google.com [IPv6:2607:f8b0:4864:20::841]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 733C3C061A0C; Fri, 15 May 2020 03:02:12 -0700 (PDT) Received: by mail-qt1-x841.google.com with SMTP id t25so1453533qtc.0; Fri, 15 May 2020 03:02:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=IcUXaEpbXUpVL01oFB6hRlgR7PeeYt7QBRNoruvyCbY=; b=r8YCpftd/P5xTvlYz3ynLdKuAbb+OBjgoQ+380Hvgp8upI9U0p29w3r2M23HNeCgny McaR//XORw7nRXahwn89WFF8xUs69HoY61LqdifB+ntJhZBcgCEhRowcUg3hY3cYjKZ0 6F59Y/UK6GcZ4mbkdZLbEumgJq5MUdfRZhRLqfiwOq51Dbl3T7F8lYTDBhMspj1vAuvq nJydlHTEGiCKCqeftb0h7NchqDXRkBxaHSPSCfSS0nO5gwg6en13tc786ZnofttzAwsx pTizqaZb2nXkk1NFaVceiuZLCPW0zb3K6jE3itFdgovcgWjul7Fb0avWf1RtyBzW0gE8 lonw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=IcUXaEpbXUpVL01oFB6hRlgR7PeeYt7QBRNoruvyCbY=; b=BpG7OKdYIbKlUmLKp9XnUqim61O5CBNw5DLumEWAmoBLIY/TKGGYVkPHRMXV5U0BQW aXlKgHS+qz/mYmwax+UuANRLWclMz6YSfxyIqNbNShMdwKtsX45+bifr/FshAAWTdUOE lnxBGriQZ0RC4hvzOZ/ADXDpK2pCtWPrtwzBSO2gcfwzs1qQp1nhXytYxBZSxdih+b/g rZIw7u5iSLBHGpM5TxPcA3kgiefTP+BJm0tMOWryDAloW1ShK15hNmzKkHKBrpKS5WKn FX7O0EHCP3h9n1xXW/OjNK4lTBD7nqfoRCc3bfnIyy8CJfHgRIBkCOHmXrbAa+qtZFnq /wzA== X-Gm-Message-State: AOAM531TKXuipdQACI9bRgkNSmnwpHV39gd9IpE/MtP8G6wrfV0K7MXy PP6P1tcCeUzVSgjgO/t9cbrn7lEviTqrLsTh13M= X-Google-Smtp-Source: ABdhPJyznFMUdqKh5MEAtGN+Z5aVH5R/r5Mj4195QZGvA37EfsjjNUwLr+rQki1u4TDjULiTD0B2I6/8TxiO06OU3cA= X-Received: by 2002:ac8:302f:: with SMTP id f44mr2485555qte.121.1589536931527; Fri, 15 May 2020 03:02:11 -0700 (PDT) MIME-Version: 1.0 References: <20200501102158.GA5276@sirena.org.uk> <20200512123801.GG5110@sirena.org.uk> In-Reply-To: <20200512123801.GG5110@sirena.org.uk> From: Shengjiu Wang Date: Fri, 15 May 2020 18:01:57 +0800 Message-ID: Subject: Re: [PATCH 2/3] ASoC: fsl_esai: Add support for imx8qm To: Mark Brown Cc: Shengjiu Wang , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Linux-ALSA , Timur Tabi , Xiubo Li , Liam Girdwood , linuxppc-dev@lists.ozlabs.org, Takashi Iwai , Nicolin Chen , Rob Herring , Fabio Estevam , linux-kernel Content-Type: text/plain; charset="UTF-8" Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Tue, May 12, 2020 at 8:38 PM Mark Brown wrote: > > On Tue, May 12, 2020 at 10:48:41AM +0800, Shengjiu Wang wrote: > > On Wed, May 6, 2020 at 10:33 AM Shengjiu Wang wrote: > > > On Fri, May 1, 2020 at 6:23 PM Mark Brown wrote: > > > > > > EDMA requires the period size to be multiple of maxburst. Otherwise > > > > > the remaining bytes are not transferred and thus noise is produced. > > > > > If this constraint comes from the DMA controller then normally you'd > > > > expect the DMA controller integration to be enforcing this - is there no > > > > information in the DMA API that lets us know that this constraint is > > > > there? > > > > No, I can't find one API for this. > > > Do you have a recommendation? > > > could you please recommend which DMA API can I use? > > Not off-hand, you'd probably need to extend the API to export the > information. Thanks. I will think about if I can find a better solution. And I will drop this change and send v2 of this patch-set.