netdev - Re: [PATCH v5] can: xilinx CAN controller support.

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Date:	Wed, 12 Mar 2014 11:01:44 +0100
From:	Michal Simek <monstr@...str.eu>
To:	Marc Kleine-Budde <mkl@...gutronix.de>
CC:	Appana Durga Kedareswara Rao <appana.durga.rao@...inx.com>,
	"linux-can@...r.kernel.org" <linux-can@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	Michal Simek <michals@...inx.com>,
	"wg@...ndegger.com" <wg@...ndegger.com>,
	"fengguang.wu@...el.com" <fengguang.wu@...el.com>
Subject: Re: [PATCH v5] can: xilinx CAN controller support.

On 03/11/2014 01:48 PM, Marc Kleine-Budde wrote:
> On 03/11/2014 01:34 PM, Appana Durga Kedareswara Rao wrote:
> 
>>>> diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index
>>>> 9e7d95d..b180239 100644
>>>> --- a/drivers/net/can/Kconfig
>>>> +++ b/drivers/net/can/Kconfig
>>>> @@ -125,6 +125,13 @@ config CAN_GRCAN
>>>>       endian syntheses of the cores would need some modifications on
>>>>       the hardware level to work.
>>>>
>>>> +config CAN_XILINXCAN
>>>> +   tristate "Xilinx CAN"
>>>> +   depends on ARCH_ZYNQ || MICROBLAZE
>>>
>>> Is Zynq multiarch already?
>> Discussions are going on this
>> So the final thing that Fengguang ( fengguang.wu@...el.com)
>> Proposed is
>>         config CAN_XILINX
>>         tristate "Xilinx CAN"
>>         depends on ARCH_ZYNQ || MICROBLAZE || COMPILE_TEST
>>         depends on COMMON_CLK && HAS_MMIO  # whatever you need for other architectures
> 
>> Are you Ok for this?
> 
> You have to fill the 2nd depends on with some sane values, though.

This should be that one
config CAN_XILINX
         tristate "Xilinx CAN"
         depends on ARCH_ZYNQ || MICROBLAZE || COMPILE_TEST
         depends on COMMON_CLK && HAS_IOMEM


Is there any driver which is in CAN which not use MMIO accesses?
If not, maybe we should just add dependency to

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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