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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22107E7490C for ; Mon, 2 Oct 2023 19:40:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238881AbjJBTkE (ORCPT ); Mon, 2 Oct 2023 15:40:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229623AbjJBTkD (ORCPT ); Mon, 2 Oct 2023 15:40:03 -0400 Received: from wout5-smtp.messagingengine.com (wout5-smtp.messagingengine.com [64.147.123.21]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BDE78A9; Mon, 2 Oct 2023 12:40:00 -0700 (PDT) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.west.internal (Postfix) with ESMTP id 0096A3200938; Mon, 2 Oct 2023 15:39:58 -0400 (EDT) Received: from imap51 ([10.202.2.101]) by compute5.internal (MEProxy); Mon, 02 Oct 2023 15:40:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arndb.de; h=cc :cc:content-type:content-type:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm1; t=1696275598; x=1696361998; bh=cR 5FbbI1lqxiB+qg6Zn8X90jiVThNPnVu7FeZ8sfAZw=; b=fOSacZgYq/lloDMgcZ kmWlto4/kkhiERdf+7acBJj0SpSd8VTdwCLZS0dGW2xckckf0xkUTR3k2DrW982V hWM8l2M3lpwcpdZXhYHg3eAFHTtbIopR6/Hf8PrKoagTRtjIVkbOKEXVKBcSDADx NhxbgrhfLC6qoiAnYchZB0OuHHaWKDc5lJ122suYDuPdPZ9VL858jf2AWTcxJYU6 jipDeZDr8999ad5P6nZdojt01AyeArHpHCIE+lX+LF421EP+KfSv6Oz5rsaiveus krBCefEdv3YaVHDBGVtiKuboyry7MIEDZVFOEC0oQjpOWshiE60TzMu2c5jLssJB 2Otw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm2; t=1696275598; x=1696361998; bh=cR5FbbI1lqxiB +qg6Zn8X90jiVThNPnVu7FeZ8sfAZw=; b=p9qPWXMjmowPXbbtC3ETYwGHqutJA DprpZx1X6mXfVWnHjMUk9DmzFM9N/UiNj4CiRzjOJ1cTIBHQHnDRNJ8GTK+Ms2Y1 7lpZfOT7wV7HGvdL6BWyzFnXeSqfdV/P76d/o6cC9yWvbev0NwFC1Qs9egQchqtB rwpUx1T+NXZa6WUjYNhieAltn2ZY18pmT5RFndZsslF1UWZd7Ftghh+FG9fDnfHQ J6iOLjiIhYm8lMz9WLWYfh+XUt0rFy61eWk4IIN61eJ7R/QVHu8zg7T+wV/EKqGe fpdYJSTtlZDIHYL3ibu1/oMJJTfpYicYguTQaxS0wzUMtJp55vkG39FTA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvkedrfedtgddtlecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefofgggkfgjfhffhffvvefutgesthdtredtreertdenucfhrhhomhepfdetrhhn ugcuuegvrhhgmhgrnhhnfdcuoegrrhhnugesrghrnhgusgdruggvqeenucggtffrrghtth gvrhhnpeffheeugeetiefhgeethfejgfdtuefggeejleehjeeutefhfeeggefhkedtkeet ffenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpegrrh hnugesrghrnhgusgdruggv X-ME-Proxy: Feedback-ID: i56a14606:Fastmail Received: by mailuser.nyi.internal (Postfix, from userid 501) id 124A7B6008D; Mon, 2 Oct 2023 15:39:58 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.9.0-alpha0-958-g1b1b911df8-fm-20230927.002-g1b1b911d MIME-Version: 1.0 Message-Id: <77c827ac-06a3-44fc-97ff-45db82ac0206@app.fastmail.com> In-Reply-To: References: <20231002183750.552759-1-Frank.Li@nxp.com> <20231002183750.552759-2-Frank.Li@nxp.com> <7f39410a-72fc-463e-b41c-64674ab4f129@app.fastmail.com> Date: Mon, 02 Oct 2023 21:39:37 +0200 From: "Arnd Bergmann" To: "Frank Li" Cc: "Vinod Koul" , "Baoquan He" , dmaengine@vger.kernel.org, "Greg Kroah-Hartman" , imx@lists.linux.dev, linux-kernel@vger.kernel.org, "kernel test robot" , oe-kbuild-all@lists.linux.dev, "Rafael J . Wysocki" Subject: Re: [PATCH v5 1/3] debugfs_create_regset32() support 8/16 bit width registers Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org On Mon, Oct 2, 2023, at 21:07, Frank Li wrote: > On Mon, Oct 02, 2023 at 08:55:23PM +0200, Arnd Bergmann wrote: > >> A few other thoughts from my side, all of which could be ignored: >> >> - if the ioport access is not an important feature, we can instead >> support 64-bit readl() as I commented in a previous email. We just >> can't easily have both. > > We will get 64bit dma edma soon. So I can test and upstream it when I get > it. Ok, so if we already know this is going to be needed, then I would skip the PIO support and just use read{bwlq}() with the optional swab() instead of the ioread variants. Otherwise there is a risk that someone starts relying on the port I/O feature and make it harder to remove. Arnd