linux-kernel - Re: [PATCH RFC v2 5/6] ARM: add Armada 1500 and Sony NSZ-GS7 device tree files

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Date:	Wed, 28 Aug 2013 14:23:56 +0200
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	Jason Cooper <jason@...edaemon.net>
CC:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	devicetree@...r.kernel.org, Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH RFC v2 5/6] ARM: add Armada 1500 and Sony NSZ-GS7 device
 tree files

On 08/28/13 14:14, Jason Cooper wrote:
> On Wed, Aug 28, 2013 at 02:14:33AM +0200, Sebastian Hesselbarth wrote:
>> This adds very basic device tree files for the Marvell Armada 1500 SoC
>> (88DE3100) and the Sony NSZ-GS7 GoogleTV board. Currently, SoC only has
>> nodes for cpus, some clocks, l2 cache controller, local timer, apb timers,
>> uart, and interrupt controllers. The Sony NSZ-GS7 is a GoogleTV consumer
>> device comprising the Armada 1500 SoC above.
>>
>> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
>> ---
>> Changelog:
>> v1->v2:
>> - add binding documentation (Reported by Jason Cooper)
>> - change l2cc from aurora to tauros3 (Reported by Thomas Petazzoni)
>> - add copyright reference
>> - adapt compatibles to mach-berlin instead of mach-mvebu
>>
>> Cc: Jason Cooper <jason@...edaemon.net>
>> Cc: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
>> Cc: Arnd Bergmann <arnd@...db.de>
>> Cc: Russell King <linux@....linux.org.uk>
>> Cc: devicetree@...r.kernel.org
>> Cc: linux-doc@...r.kernel.org
>> Cc: linux-arm-kernel@...ts.infradead.org
>> Cc: linux-kernel@...r.kernel.org
>> ---
>>   .../devicetree/bindings/arm/marvell,berlin.txt     |   23 ++
>>   arch/arm/boot/dts/Makefile                         |    2 +
>>   arch/arm/boot/dts/mv88de3100-sony-nsz-gs7.dts      |   29 +++
>>   arch/arm/boot/dts/mv88de3100.dtsi                  |  222 ++++++++++++++++++++
>>   4 files changed, 276 insertions(+), 0 deletions(-)
>>   create mode 100644 Documentation/devicetree/bindings/arm/marvell,berlin.txt
>>   create mode 100644 arch/arm/boot/dts/mv88de3100-sony-nsz-gs7.dts
>>   create mode 100644 arch/arm/boot/dts/mv88de3100.dtsi
>>
>> diff --git a/Documentation/devicetree/bindings/arm/marvell,berlin.txt b/Documentation/devicetree/bindings/arm/marvell,berlin.txt
>> new file mode 100644
>> index 0000000..a4c3056
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/arm/marvell,berlin.txt
>> @@ -0,0 +1,23 @@
>> +Marvell Berlin (88DE3xxx) family SoCs Device Tree Bindings
>> +---------------------------------------------------------------
>> +
>> +Boards with a SoC of the Marvell Berlin (88DE3xxx) family, e.g. Armada 1500
>> +shall have the following properties:
>> +
>> +* Required root node properties:
>> +compatible: must contain "marvell,berlin"
>> +
>> +In addition, the above compatible shall be extended with the specific
>> +SoC used, i.e.
>> +    "marvell,88de3100"	for Marvell 88DE3100 (Armada 1500),
>> +    "marvell,88de3010"	for Marvell 88DE3010 (Armada 1000),
>> +    "marvell,88de3005"	for Marvell 88DE3005 (Armada 1500-mini)
>> +
>> +* Example:
>> +
>> +/ {
>> +	model = "Sony NSZ-GS7";
>> +	compatible = "marvell,88de3100", "marvell,berlin";
>
> I would make this:
>
> 	compatible = "sony,nsz-gs7", "marvell,88de3100", "marvell,berlin";

Ok.

>> +
>> +	...
>> +}
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index d45058e..2989b51 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -43,6 +43,8 @@ dtb-$(CONFIG_ARCH_AT91)	+= sama5d35ek.dtb
>>
>>   dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb
>>   dtb-$(CONFIG_ARCH_BCM) += bcm11351-brt.dtb
>> +dtb-$(CONFIG_ARCH_BERLIN) += \
>> +	mv88de3100-sony-nsz-gs7.dtb
>>   dtb-$(CONFIG_ARCH_DAVINCI) += da850-enbw-cmc.dtb \
>>   	da850-evm.dtb
>>   dtb-$(CONFIG_ARCH_DOVE) += dove-cm-a510.dtb \
>> diff --git a/arch/arm/boot/dts/mv88de3100-sony-nsz-gs7.dts b/arch/arm/boot/dts/mv88de3100-sony-nsz-gs7.dts
>> new file mode 100644
>> index 0000000..1081bc1
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/mv88de3100-sony-nsz-gs7.dts
>> @@ -0,0 +1,29 @@
>> +/*
>> + * Device Tree file for Sony NSZ-GS7
>> + *
>> + * Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
>> + *
>> + * 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 "mv88de3100.dtsi"
>> +
>> +/ {
>> +	model = "Sony NSZ-GS7";
>> +	compatible = "sony,nsz-gs7", "marvell,88de3100", "marvell,berlin";
>> +
>> +	chosen {
>> +		bootargs = "console=ttyS0,115200 earlyprintk verbose debug";
>
> I would remove 'verbose debug' before official submission, no point to
> defaulting to log-spammer.

Agree.

Maybe, for the next patches, I'll add some I/O device drivers that
allow you to actually boot into some rootfs. All those fooHCI IP
shouldn't be that hard - hopefully some quirks only.

I also had a look at I2C and SPI, both DW IP with mainline drivers
available. SPI needs a little DT tweaking and I did not carry out any
functional tests, yet.

Thanks for the constant reviews!

Sebastian
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