From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@linaro.org>
Subject: Re: [PATCH] xen/serial: setup UART idle mode for OMAP
Date: Fri, 05 Dec 2014 14:20:37 +0000
Message-ID: <5481BF35.2060800@linaro.org>
References: <1417787196-3313-1-git-send-email-oleksandr.dmytryshyn@globallogic.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <1417787196-3313-1-git-send-email-oleksandr.dmytryshyn@globallogic.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Oleksandr Dmytryshyn <oleksandr.dmytryshyn@globallogic.com>, xen-devel@lists.xen.org
Cc: Stefano Stabellini <stefano.stabellini@citrix.com>, Daniel De Graaf <dgdegra@tycho.nsa.gov>, Tim Deegan <tim@xen.org>, Ian Campbell <ian.campbell@citrix.com>
List-Id: xen-devel@lists.xenproject.org

Hi Oleksandr,

On 05/12/14 13:46, Oleksandr Dmytryshyn wrote:
> UART is not able to receive bytes when idle mode is not
> configured properly. When we use Xen with old Linux
> Kernel (for example 3.8) this kernel configures UART
> idle mode even if the UART node in device tree is absent.

I don't understand how the kernel can configure the UART as the MMIO
range is not mapped. Is there another way to set the idle mode?

Regards,

-- 
Julien Grall