Received: by 2002:a25:d7c1:0:0:0:0:0 with SMTP id o184csp4047897ybg; Fri, 25 Oct 2019 12:33:46 -0700 (PDT) X-Google-Smtp-Source: APXvYqxn51lSvobgffhxMBgQXQAsvye2xnzSVPpvnvk7xSUW9phUCuxbO9E8N5ZrN886q1jJymvQ X-Received: by 2002:a17:906:58d:: with SMTP id 13mr5036204ejn.293.1572032026186; Fri, 25 Oct 2019 12:33:46 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1572032026; cv=none; d=google.com; s=arc-20160816; b=01Yzf45ySAYI9NpYTECOkY1wzeFZLa4OEy1ARQr9l7mpxABUj8C4tBhaAIG/tOKeuA JsDiZQY/TrhgZsqsGfrmcmwBTZ88wKX6lr7BIdrHtYKZAhpp2VCjkVg5SGd5CvglNAvD lYCZFuTWy3DyZqv4BAZEZPqSYTpGxODXPCJz3HjxEVaSFY++AotWD3RlQSIoYPfSK96A DSqFbdqgyehG+iUnQcyEjg3kVIZd3LLpLODMm/LSlhlBJ55oEylHzGHBLlvxpKycdrlZ Fuu9Fro6HOJa8HHhmElxQBAZpB6yqio6QVrEiHxDg17jNN4QtTgdclbaEB83ospwOIBE KBHw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=hoFRWJVPlo/HH1yL3Y+gka9eWAWuFkEbOvWnV5CB4iU=; b=dKkr09BrcVvEMul2As/4/lDaCrgGo9WHz2DKfzCUHk0m2gG2rMhKGM/7czysmmMVj+ AyUXOdfwZvYIO0qGkfj1SGuwoYl+3f/ojSMmEGReKmrKZF4YR0Un/o3Rcn8H0yCyrjtl ubKipQDiQBtVIFlljrKxgZmX6N9YXTqI52aHoRpfjj2ofmFyA1Gh9u/c4A4ckzu8XHXV RB+BzIEJhb4uP95Af2hDOZ48o8xrHS9fYFXcNSB2qKbS1fj9i4YF2JQoGJQ+873MHhbN lnplWgFVYgQdm228hYR1jZOybU85X0bJqfxXWmAS7TLx8DvG0qX3EepyEJ8zNWbY82tE h53A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b="FIQ/dERd"; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id qh2si1800713ejb.372.2019.10.25.12.33.22; Fri, 25 Oct 2019 12:33:46 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b="FIQ/dERd"; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2438073AbfJYIzg (ORCPT + 99 others); Fri, 25 Oct 2019 04:55:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:58440 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2437607AbfJYIze (ORCPT ); Fri, 25 Oct 2019 04:55:34 -0400 Received: from dragon (li937-157.members.linode.com [45.56.119.157]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 45D2521D7B; Fri, 25 Oct 2019 08:55:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1571993734; bh=5i3d+HY/V9+fI+uU7h1tX+fWD57IhBHMQfmMyo6jW0g=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=FIQ/dERdy5OkfSnkwC/QgV1xafO+vBptMDHo96N++fPAbjhSmlkAGTYvw3jNb1VFi S7bP4XDAcKBi1T5YIgLuBu8vztAbKdPBY4ZeZ2/wEoYtZJxRlqFZ3bdlB1F17+zKeE pfirmEbL1hEYAsGqA5dT8DKdV+kpfLy+KRJlkJdo= Date: Fri, 25 Oct 2019 16:55:17 +0800 From: Shawn Guo To: Lukasz Majewski Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Mark Rutland , Rob Herring , Stefan Agner , Pengutronix Kernel Team , Sascha Hauer , Robin Murphy Subject: Re: [PATCH v2] dts: Disable DMA support on the BK4 vf610 device's fsl_lpuart driver Message-ID: <20191025085515.GH3208@dragon> References: <20191010090802.16383-1-lukma@denx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191010090802.16383-1-lukma@denx.de> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 10, 2019 at 11:08:02AM +0200, Lukasz Majewski wrote: > This change disables the DMA support (RX/TX) on the NXP's fsl_lpuart > driver - the PIO mode is used instead. This change is necessary for better > robustness of BK4's device use cases with many potentially interrupted > short serial transfers. > > Without it the driver hangs when some distortion happens on UART lines. > > Signed-off-by: Lukasz Majewski > Suggested-by: Robin Murphy Subject prefix should be 'ARM: dts: ...'. I fixed it up and applied the patch. Shawn