linux-kernel - Re: [PATCH] arm: dt: zynq: Add support for the zc706 platform

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Message-ID: <51B82755.4080701@monstr.eu>
Date:	Wed, 12 Jun 2013 09:46:29 +0200
From:	Michal Simek <monstr@...str.eu>
To:	Sören Brinkmann <soren.brinkmann@...inx.com>
CC:	Dinh Nguyen <dinguyen@...era.com>,
	Michal Simek <michal.simek@...inx.com>,
	Russell King <linux@....linux.org.uk>,
	Olof Johansson <olof@...om.net>,
	Shawn Guo <shawn.guo@...aro.org>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm: dt: zynq: Add support for the zc706 platform

On 06/11/2013 11:28 PM, Sören Brinkmann wrote:
> On Tue, Jun 11, 2013 at 04:24:48PM -0500, Dinh Nguyen wrote:
>> Hi Soren,
>>
>> On Mon, 2013-06-10 at 10:10 -0700, Soren Brinkmann wrote:
>>> Add a DT fragment for the zc706 Zynq platform. Also, adding a
>>> corresponding target to the Makefile and adding an appropriate
>>> compatibility string in the BSP.
>>>
>>> Signed-off-by: Soren Brinkmann <soren.brinkmann@...inx.com>
>>> ---
>>>  arch/arm/boot/dts/Makefile       |  3 ++-
>>>  arch/arm/boot/dts/zynq-zc706.dts | 31 +++++++++++++++++++++++++++++++
>>>  arch/arm/mach-zynq/common.c      |  1 +
>>>  3 files changed, 34 insertions(+), 1 deletion(-)
>>>  create mode 100644 arch/arm/boot/dts/zynq-zc706.dts
>>>
>>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>>> index b9f7121..2aecf7e 100644
>>> --- a/arch/arm/boot/dts/Makefile
>>> +++ b/arch/arm/boot/dts/Makefile
>>> @@ -206,7 +206,8 @@ dtb-$(CONFIG_ARCH_VT8500) += vt8500-bv07.dtb \
>>>  	wm8505-ref.dtb \
>>>  	wm8650-mid.dtb \
>>>  	wm8850-w70v2.dtb
>>> -dtb-$(CONFIG_ARCH_ZYNQ) += zynq-zc702.dtb
>>> +dtb-$(CONFIG_ARCH_ZYNQ) += zynq-zc702.dtb \
>>> +	zynq-zc706.dtb
>>>  
>>>  targets += dtbs
>>>  targets += $(dtb-y)
>>> diff --git a/arch/arm/boot/dts/zynq-zc706.dts b/arch/arm/boot/dts/zynq-zc706.dts
>>> new file mode 100644
>>> index 0000000..a8a1d7d
>>> --- /dev/null
>>> +++ b/arch/arm/boot/dts/zynq-zc706.dts
>>> @@ -0,0 +1,31 @@
>>> +/*
>>> + *  Copyright (C) 2011 Xilinx
>>> + *  Copyright (C) 2012 National Instruments Corp.
>>> + *  Copyright (C) 2013 Xilinx
>>> + *
>>> + * This software is licensed under the terms of the GNU General Public
>>> + * License version 2, as published by the Free Software Foundation, and
>>> + * may be copied, distributed, and modified under those terms.
>>> + *
>>> + * This program 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.
>>> + */
>>> +/dts-v1/;
>>> +/include/ "zynq-7000.dtsi"
>>> +
>>> +/ {
>>> +	model = "Zynq ZC706 Development Board";
>>> +	compatible = "xlnx,zynq-zc706", "xlnx,zynq-7000";
>>> +
>>> +	memory {
>>> +		device_type = "memory";
>>> +		reg = <0x0 0x40000000>;
>>> +	};
>>> +
>>> +	chosen {
>>> +		bootargs = "console=ttyPS1,115200 earlyprintk";
>>> +	};
>>> +
>>> +};
>>> diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
>>> index 5bfe703..221694b 100644
>>> --- a/arch/arm/mach-zynq/common.c
>>> +++ b/arch/arm/mach-zynq/common.c
>>> @@ -99,6 +99,7 @@ static void zynq_system_reset(char mode, const char *cmd)
>>>  
>>>  static const char * const zynq_dt_match[] = {
>>>  	"xlnx,zynq-zc702",
>>> +	"xlnx,zynq-zc706",
>>
>> You really don't need to add zc706 here if it is already compatable with
>> zynq-7000.
> I actually thought about this and decided to add it, since there already
> was an entry for the zc702. What is the best methord for this cases?
> Rather remove the specific ones and migrate all to the zynq-7000
> compatibility string?

Please remove zc702 compatibility string from common.c and
don't add zc706.

Thanks,
Michal

-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform



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