Message-ID: <56AFE492.5010703@arm.com>
Date:	Mon, 1 Feb 2016 23:04:50 +0000
From:	André Przywara <andre.przywara@....com>
To:	Karsten Merker <merker@...ian.org>
Cc:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Chen-Yu Tsai <wens@...e.org>, linux-sunxi@...glegroups.com,
	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org
Subject: Re: [linux-sunxi] [PATCH 11/11] arm64: dts: add Pine64 support

On 01/02/16 19:22, Karsten Merker wrote:

Hi,

> On Mon, Feb 01, 2016 at 05:39:30PM +0000, Andre Przywara wrote:
>> The Pine64 is a cost-efficient development board based on the
>> Allwinner A64 SoC.
>> There are three models: the basic version with Fast Ethernet and
>> 512 MB of DRAM (Pine64) and two Pine64+ versions, which both
>> feature Gigabit Ethernet and additional connectors for touchscreens
>> and a camera. Or as my son put it: "Those are smaller and these are
>> missing." ;-)
>> The two Pine64+ models just differ in the amount of DRAM
>> (1GB vs. 2GB). Since U-Boot will figure out the right size for us and
>> patches the DT accordingly we just need to provide one DT for the
>> Pine64+.
>>
>> Signed-off-by: Andre Przywara <andre.przywara@....com>
>> ---
>>  .../devicetree/bindings/vendor-prefixes.txt        |  1 +
>>  arch/arm64/boot/dts/Makefile                       |  1 +
>>  arch/arm64/boot/dts/allwinner/Makefile             |  5 ++
>>  arch/arm64/boot/dts/allwinner/pine64.dts           | 58 +++++++++++++++++
>>  arch/arm64/boot/dts/allwinner/pine64_common.dtsi   | 76 ++++++++++++++++++++++
>>  arch/arm64/boot/dts/allwinner/pine64_plus.dts      | 59 +++++++++++++++++
>>  6 files changed, 200 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/allwinner/Makefile
>>  create mode 100644 arch/arm64/boot/dts/allwinner/pine64.dts
>>  create mode 100644 arch/arm64/boot/dts/allwinner/pine64_common.dtsi
>>  create mode 100644 arch/arm64/boot/dts/allwinner/pine64_plus.dts
>>
>> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
>> index 72e2c5a..0c22fa9 100644
>> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
>> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
>> @@ -175,6 +175,7 @@ parade	Parade Technologies Inc.
>>  pericom	Pericom Technology Inc.
>>  phytec	PHYTEC Messtechnik GmbH
>>  picochip	Picochip Ltd
>> +pine64	Pine64
>>  plathome	Plat'Home Co., Ltd.
>>  plda	PLDA
>>  pixcir  PIXCIR MICROELECTRONICS Co., Ltd
>> diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
>> index f832b8a..3b7428a 100644
>> --- a/arch/arm64/boot/dts/Makefile
>> +++ b/arch/arm64/boot/dts/Makefile
>> @@ -1,3 +1,4 @@
>> +dts-dirs += allwinner
>>  dts-dirs += altera
>>  dts-dirs += amd
>>  dts-dirs += apm
>> diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
>> new file mode 100644
>> index 0000000..65f4e24
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/allwinner/Makefile
>> @@ -0,0 +1,5 @@
>> +dtb-$(CONFIG_ARCH_SUNXI) += pine64_plus.dtb pine64.dtb
>> +
>> +always		:= $(dtb-y)
>> +subdir-y	:= $(dts-dirs)
>> +clean-files	:= *.dtb
>> diff --git a/arch/arm64/boot/dts/allwinner/pine64.dts b/arch/arm64/boot/dts/allwinner/pine64.dts
> 
> Please see my followups to patch No. 5 and patch No. 10 in this series.
> s/pine64.dts/sun50i-pine64.dts/ ?

Really? Actually this should be more like pine64-pine64.dts, but since
the company name is identical to their (first?) product, I found it
rather weird to have this double naming.
The ARM DTs for instance are also just "juno.dts" and "juno-r1.dts".

> 
>> new file mode 100644
>> index 0000000..ebea5dd
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/allwinner/pine64.dts
>> @@ -0,0 +1,58 @@
>> +/*
>> + * Copyright (c) 2016 ARM Ltd.
>> + *
>> + * 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 library 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 library 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.
>> + *
>> + * 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 "pine64_common.dtsi"
> 
> see above
> 
> Also a minor spelling nitpick: the other *common* dts/dtsi files
> use dashes instead of underscores, so with regard to naming
> consistency I would like to propose doing it the same way here.

Good point, will fix it!

Repeated rationale for the below comments.

Cheers,
Andre.

> 
>> +
>> +/ {
>> +	model = "Pine64";
>> +	compatible = "pine64,pine64", "allwinner,a64", "allwinner,sunxi";
> 
> see above
> 
>> +
>> +	chosen {
>> +		stdout-path = "serial0:115200n8";
>> +	};
>> +
>> +	memory {
>> +		reg = <0x40000000 0x20000000>;
>> +	};
>> +};
>> diff --git a/arch/arm64/boot/dts/allwinner/pine64_common.dtsi b/arch/arm64/boot/dts/allwinner/pine64_common.dtsi
> 
> see above
> 
>> new file mode 100644
>> index 0000000..d968d76
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/allwinner/pine64_common.dtsi
>> @@ -0,0 +1,76 @@
>> +/*
>> + * Copyright (c) 2016 ARM Ltd.
>> + *
>> + * 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 library 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 library 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.
>> + *
>> + * 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.
>> + */
>> +
>> +#include "a64.dtsi"
> 
> see above
> 
>> +
>> +&mmc0 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&mmc0_pins>, <&mmc0_default_cd_pin>;
>> +	vmmc-supply = <&reg_vcc3v3>;
>> +	cd-gpios = <&pio 5 6 0>;
>> +	cd-inverted;
>> +	status = "okay";
>> +};
>> +
>> +&uart0 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&uart0_pins_a>;
>> +	status = "okay";
>> +};
>> +
>> +&uart2 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&uart2_pins>;
>> +	status = "okay";
>> +};
>> +
>> +&uart3 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&uart3_pins_a>;
>> +	status = "okay";
>> +};
>> +
>> +&uart4 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&uart4_pins>;
>> +	status = "okay";
>> +};
>> diff --git a/arch/arm64/boot/dts/allwinner/pine64_plus.dts b/arch/arm64/boot/dts/allwinner/pine64_plus.dts
>> new file mode 100644
>> index 0000000..344752e
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/allwinner/pine64_plus.dts
> 
> see above
> 
>> @@ -0,0 +1,59 @@
>> +/*
>> + * Copyright (c) 2016 ARM Ltd.
>> + *
>> + * 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 library 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 library 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.
>> + *
>> + * 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 "pine64_common.dtsi"
> 
> see above
> 
>> +
>> +/ {
>> +	model = "Pine64+";
>> +	compatible = "pine64,pine64_plus", "allwinner,a64", "allwinner,sunxi";
> 
> see above
> 
>> +
>> +	chosen {
>> +		stdout-path = "serial0:115200n8";
>> +	};
>> +
>> +	/* There is a model with 2GB of DRAM, but U-Boot fixes this for us. */
>> +	memory {
>> +		reg = <0x40000000 0x40000000>;
>> +	};
>> +};
>> -- 
>> 2.6.4
> 
> Regards,
> Karsten
> 

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