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

[Joachim Eastwood]

On Sun, Oct 14, 2012 at 4:54 PM, Jean-Christophe PLAGNIOL-VILLARD
<plagnioj at jcrosoft.com> wrote:
> 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

okay. I'll make the necessary changes to the patch set.

I'll also include a fix for board-dt (select CONFIG_SOC_AT91SAM9) to
stop the build failure when it's enabled on a RM9200 only config.

Secondly I'll rebase on linux-next which includes your at91-pinctrl stuff.

regards
Joachim Eastwood


> Best Regards,
> J.