Subject: [PATCH] ARM: shmobile: silk: initial device tree

From: [email-masked] (Sergei Shtylyov)
Date: Thu, 05 Feb 2015 01:46:59 +0300

On 02/02/2015 03:19 AM, Simon Horman wrote:

>>>> Add the initial device tree for the R8A7794 SoC based SILK low cost board.
>>>> SCIF2 serial port support is included, so that the serial console can work.

>>>> Signed-off-by: Sergei Shtylyov <[email-masked]>

>>>> ---
>>>> This patch is against the 'renesas-devel-20150129-v3.19-rc6' tag of Simon
>>>> Horman's 'renesas.git' repo.

>>>>   arch/arm/boot/dts/Makefile         |    1
>>>>   arch/arm/boot/dts/r8a7794-silk.dts |   41 +++++++++++++++++++++++++++++++++++++
>>>>   2 files changed, 42 insertions(+)

>> [...]
>>>> Index: renesas/arch/arm/boot/dts/r8a7794-silk.dts
>>>> ===================================================================
>>>> --- /dev/null
>>>> +++ renesas/arch/arm/boot/dts/r8a7794-silk.dts
>>>> @@ -0,0 +1,41 @@
>>>> +/*
>>>> + * Device Tree Source for the SILK board
>>>> + *
>>>> + * Copyright (C) 2014 Renesas Electronics Corporation
>>>> + * Copyright (C) 2014-2015 Renesas Solutions Corp.
>>>> + * Copyright (C) 2014-2015 Cogent Embedded, Inc.
>>>> + *
>>>> + * This file is licensed under the terms of the GNU General Public License
>>>> + * version 2.  This program is licensed "as is" without any warranty of any
>>>> + * kind, whether express or implied.
>>>> + */
>>>> +
>>>> +/dts-v1/;
>>>> +#include "r8a7794.dtsi"
>>>> +
>>>> +/ {
>>>> +	model = "SILK";
>>>> +	compatible = "renesas,silk", "renesas,r8a7794";
>>>> +
>>>> +	aliases {
>>>> +		serial0 = &scif2;
>>>> +	};
>>>> +
>>>> +	chosen {
>>>> +		bootargs = "console=ttySC0,38400 ignore_loglevel";

>>> Please remove console= for consistency with other boards
>>> based on Renesas SoCs.

>>     I can't, there will be no console at all.

> Its not clear to me why that should be the case when you also have:

> 		stdout-path = &scif2;

> Is this a baud issue?

    Don't think so, I would have seen at least some garbage on the console.
There was nothing. I'm still not sure what the problem was...

> If so is it possible to set uboot to 115200 bps?

    Possible with the new board.

WBR, Sergei