From mboxrd@z Thu Jan  1 00:00:00 1970
From: radu.pirea@microchip.com (Radu Pirea)
Date: Fri, 25 May 2018 15:17:39 +0300
Subject: [PATCH v3 6/6] tty/serial: atmel: changed the driver to work
 under at91-usart mfd
In-Reply-To: <4d70c73e-9db7-bdff-7414-04a4843acae3@sorico.fr>
References: <20180511103822.31698-1-radu.pirea@microchip.com>
 <20180511103822.31698-7-radu.pirea@microchip.com>
 <4a75568e-a52e-3872-f465-d707372a5c12@sorico.fr>
 <95a51c6c69bf1a2422f545ac1f06846ebcdb186a.camel@microchip.com>
 <4d70c73e-9db7-bdff-7414-04a4843acae3@sorico.fr>
Message-ID: <391de5c1-45d7-4773-fe57-7f2bc747214b@microchip.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org



On 05/15/2018 04:14 PM, Richard Genoud wrote:
> On 15/05/2018 14:47, Radu Pirea wrote:
>> On Mon, 2018-05-14 at 12:57 +0200, Richard Genoud wrote:
>>> After your patch, the DMA is not selected anymore:
>>> atmel_usart_serial atmel_usart_serial.0.auto: TX channel not
>>> available, switch to pio
>>> instead of:
>>> atmel_usart fffff200.serial: using dma1chan2 for tx DMA transfers
>>>
>> Fixed.
>>> And the kernel doesn't log anymore on the serial console, despite the
>>> loglevel=8
>>> (after reverting this series, the kernel logs reappears on the serial
>>> console)
>>>
>> Which serial are you using as console?
> fffff200.serial (sam9g35-cm)
> ( stdout-path = "serial0:115200n8"; in the DTS )
> 
> With this series applied, all the kernel log goes on the screen.
> Without, it goes on the serial debug.
> 
I tested again with archlinux arm and poky-linux4sam release as distros 
and kernel log goes on the serial debug. Can you give me more details 
like cmdline?
>>> (tests done on sam9g35)
>>>
>> I will consider the rest of suggestions.
>>> regards,
>>> Richard
>