[U-Boot] [PATCH 1/3] fdt: Add board specific dts inclusion

[Simon Glass <sjg@chromium.org>]

On Mon, Jul 9, 2012 at 12:42 AM, Michal Simek <monstr@monstr.eu> wrote:

> On 07/04/2012 10:25 PM, Stephan Linz wrote:
>
>> Some architectures, for example Microblaze, doesn't need a
>> splitted device tree because every Microblaze hw design is
>> different. The individuell Microblaze device tree will be
>> auto generated by FPGA design tools and could be used directly
>> with dtc.
>>
>> The auto generated dts for Microblaze can not processed by CPP.
>> Unfortunately that is the default procedure in U-Boot to merge
>> a splitted device tree (substitution of ARCH_CPU_DTS).
>>
>> Microblaze will never use the ARCH_CPU_DTS substitution and we
>> introduce the new board specific substitution variable BOARD_DTS
>> that points into vendor/board/dts subdir with the file name
>> of CONFIG_DEFAULT_DEVICE_TREE. The common dts file in vendor/dts
>> subdir (defined by CONFIG_DEFAULT_DEVICE_TREE) contain a single
>> include line that can processed by CPP:
>>
>>      /include/ BOARD_DTS
>>
>> Signed-off-by: Stephan Linz<linz@li-pro.net>
>> ---
>>   dts/Makefile |    3 ++-
>>   1 files changed, 2 insertions(+), 1 deletions(-)
>>
>> diff --git a/dts/Makefile b/dts/Makefile
>> index 914e479..b1f47a1 100644
>> --- a/dts/Makefile
>> +++ b/dts/Makefile
>> @@ -36,7 +36,8 @@ $(error Your architecture does not have device tree
>> support enabled. \
>>   Please define CONFIG_ARCH_DEVICE_TREE))
>>
>>   # We preprocess the device tree file provide a useful define
>> -DTS_CPPFLAGS := -DARCH_CPU_DTS=\"$(SRCTREE)/**arch/$(ARCH)/dts/$(CONFIG_
>> **ARCH_DEVICE_TREE).dtsi\"
>> +DTS_CPPFLAGS := -DARCH_CPU_DTS=\"$(SRCTREE)/**arch/$(ARCH)/dts/$(CONFIG_
>> **ARCH_DEVICE_TREE).dtsi\" \
>> +               -DBOARD_DTS=\"$(SRCTREE)/**board/$(VENDOR)/$(BOARD)/dts/$
>> **(DEVICE_TREE).dts\"
>>
>>   all:  $(obj).depend $(LIB)
>>
>>
> Ok. Have tested this.
> Simon can you give your ACK for this patch?
>

Weill I think for now it is reasonable.

Acked-by: Simon Glass <sjg@chromium.org>


>
> Tested-by: Michal Simek <monstr@monstr.eu>
>
> I think I can add this one to my microblaze custodian tree.
>
> Thanks,
> Michal
>
>
>
> --
> Michal Simek, Ing. (M.Eng)
> w: www.monstr.eu p: +42-0-721842854
> Maintainer of Linux kernel 2.6 Microblaze Linux -
> http://www.monstr.eu/fdt/
> Microblaze U-BOOT custodian
>