Subject: [linux-sunxi] Re: [PATCH] ARM: sun6i: dt: Add new Mele I7 device

From: [email-masked] (Hans de Goede)
Date: Tue, 03 Mar 2015 08:55:36 +0100

Hi,

On 03-03-15 08:16, Maxime Ripard wrote:
> On Sat, Feb 28, 2015 at 02:48:05PM +0100, codekipper at gmail.com wrote:
>> From: Marcus Cooper <[email-masked]>
>>
>> The Mele I7 is a Allwinner A31 based Android TV box, with 1G RAM,
>> 8GB NAND flash, a RTL8188etv wifi chip, 3 USB Host ports using
>> USB-A receptacles, a micro USB-B receptacle for USB OTG, HDMI out,
>> a TRS connector for A/V, SPDIF and IrDA.
>>
>> This patch adds basic support for the device, more information can
>> be found here (http://linux-sunxi.org/Mele_I7).
>>
>> Signed-off-by: Marcus Cooper <[email-masked]>
>> ---
>>   arch/arm/boot/dts/Makefile         |   1 +
>>   arch/arm/boot/dts/sun6i-a31-i7.dts | 150 +++++++++++++++++++++++++++++++++++++
>>   2 files changed, 151 insertions(+)
>>   create mode 100644 arch/arm/boot/dts/sun6i-a31-i7.dts
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index eae7706..8d9d5ea 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -532,6 +532,7 @@ dtb-$(CONFIG_MACH_SUN6I) += \
>>   	sun6i-a31-app4-evb1.dtb \
>>   	sun6i-a31-colombus.dtb \
>>   	sun6i-a31-hummingbird.dtb \
>> +	sun6i-a31-i7.dtb \
>>   	sun6i-a31-m9.dtb \
>>   	sun6i-a31s-cs908.dtb
>>   dtb-$(CONFIG_MACH_SUN7I) += \
>> diff --git a/arch/arm/boot/dts/sun6i-a31-i7.dts b/arch/arm/boot/dts/sun6i-a31-i7.dts
>> new file mode 100644
>> index 0000000..43fdcd5
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/sun6i-a31-i7.dts
>> @@ -0,0 +1,150 @@
>> +/*
>> + * Copyright 2015 Marcus Cooper <[email-masked]>
>> + *
>> + * This file is dual-licensed: you can use it either under the terms
>> + * of the GPL or the X11 license, at your option. Note that this dual
>> + * licensing only applies to this file, and not this project as a
>> + * whole.
>> + *
>> + *  a) This file is free software; you can redistribute it and/or
>> + *     modify it under the terms of the GNU General Public License as
>> + *     published by the Free Software Foundation; either version 2 of the
>> + *     License, or (at your option) any later version.
>> + *
>> + *     This file is distributed in the hope that it will be useful,
>> + *     but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> + *     GNU General Public License for more details.
>> + *
>> + *     You should have received a copy of the GNU General Public
>> + *     License along with this file; if not, write to the Free
>> + *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
>> + *     MA 02110-1301 USA
>> + *
>> + * Or, alternatively,
>> + *
>> + *  b) Permission is hereby granted, free of charge, to any person
>> + *     obtaining a copy of this software and associated documentation
>> + *     files (the "Software"), to deal in the Software without
>> + *     restriction, including without limitation the rights to use,
>> + *     copy, modify, merge, publish, distribute, sublicense, and/or
>> + *     sell copies of the Software, and to permit persons to whom the
>> + *     Software is furnished to do so, subject to the following
>> + *     conditions:
>> + *
>> + *     The above copyright notice and this permission notice shall be
>> + *     included in all copies or substantial portions of the Software.
>> + *
>> + *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> + *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
>> + *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>> + *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
>> + *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
>> + *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + *     OTHER DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +/dts-v1/;
>> +#include "sun6i-a31.dtsi"
>> +#include "sunxi-common-regulators.dtsi"
>> +
>> +#include <dt-bindings/gpio/gpio.h>
>> +#include <dt-bindings/pinctrl/sun4i-a10.h>
>> +
>> +/ {
>> +	model = "Mele I7 Quad top set box";
>> +	compatible = "mele,i7", "allwinner,sun6i-a31";
>> +
>> +	chosen {
>> +		bootargs = "earlyprintk console=ttyS0,115200";
>
> Using earlyprintk by default is a bad idea if the kernel is configured
> with DEBUG_LL support for another SoC.

While on this subject, u-boot now sets the chosen/stdout-path property
up by default, which means that the kernel will do the right thing by
default. So we we really do not need any bootargs= in our dts files.

Currently we've a random mix where we do have bootargs in some, but not
in most sunxi dts files. I believe we should simply remove it everywhere...

Regards,

Hans