[PATCH 3/4] ARM: AT91: Add AT91RM9200 support to DT board

Nicolas Ferre nicolas.ferre at atmel.com
Mon Oct 15 04:23:17 EDT 2012

On 10/14/2012 04:54 PM, Jean-Christophe PLAGNIOL-VILLARD :
> On 19:08 Fri 12 Oct     , Joachim Eastwood wrote:
>> On Fri, Oct 12, 2012 at 6:27 PM, Jean-Christophe PLAGNIOL-VILLARD
>> <plagnioj at jcrosoft.com> wrote:
>>> On 17:28 Fri 12 Oct     , ludovic.desroches wrote:
>>>> Le 10/12/2012 04:22 PM, Jean-Christophe PLAGNIOL-VILLARD a écrit :
>>>>> On 00:05 Fri 12 Oct     , Joachim Eastwood wrote:
>>>>>> Signed-off-by: Joachim Eastwood <manabian at gmail.com>
>>>>>> ---
>>>>>> Hi,
>>>>>> This patch has some potential issues.
>>>>>> Before this patch board-dt would fail building when only AT91RM9200 was enabled because at91sam926x_timer symbol would be missing. This patch uses the at91rm9200_timer which
>>>>>> will fail if AT91RM9200 is not enabled.
>>>>> this need work with ot wtihout rm9200
>> btw, to solve the build issue with board-dt in mainline now we need to
>> add a select CONFIG_SOC_AT91SAM9 to config MACH_AT91SAM_DT.
>>>>>> Any thoughts on solving this? As mention above this bug exists in mainline now.
>>>>> duplicate the board-dt with one for rm9200 only
>>>>> as rm9200 ans sam9 are 2 distict familly
>>>> Why not adding a new machine descriptor for rm9200 in order to
>>>> prevent file duplication?
>>> because the soc are different and can only be compile if the timer is enable
>>> and I do not want to enable the rm9200 timer on sam9 so instead of a ifdef i
>>> the board-dt create a new board is better as we have a 50 lines file
>>> with different board_compat and different machine descriptor
>> I am okey with either approach, but I would like to hear what Nicolas
>> Ferre has to say since he is the on the one that added board-dt. It
>> would be nice to have everything in one board DT file, but I
>> understand your concern with the RM9200 timer.
>> We will also bump into this again on AT91X40 I guess.
> simple on x40 forget about it the x40 is no MMU only SoC
> so you can not enable  it by default as the all other at91 are use with MMU
> I did the necessary to make the board-dt nearly empty and the same for all the
> sam9 but the board-dt is sam9 only and need to be keeped this way
> Nico will tell you the same

Please, do not speak instead of me!

And even if I often agree with you, it is far from being automatic ;-)

Nicolas Ferre

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