[U-Boot] [PATCH 1/2] spl: dm: Add SPL_DM_SEQ_ALIAS config option

[Stefan Roese]

On 11.12.2015 18:32, Marek Vasut wrote:
> On Friday, December 11, 2015 at 04:46:40 PM, Michal Simek wrote:
>> On 11.12.2015 16:07, Marek Vasut wrote:
>>> On Friday, December 11, 2015 at 03:48:09 PM, Nathan Rossi wrote:
>>>> The Device Model sequence alias feature is required by some Uclasses.
>>>> Instead of disabling the feature for all SPL targets allow it to be
>>>> configured.
>>>>
>>>> The config option is disabled by default to reduce code size for targets
>>>> that are not interested or do not require this feature.
>>>>
>>>> Signed-off-by: Nathan Rossi <nathan at nathanrossi.com>
>>>> Cc: Simon Glass <sjg at chromium.org>
>>>> Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
>>>> Cc: Linus Walleij <linus.walleij at linaro.org>
>>>> Cc: Marek Vasut <marex at denx.de>
>>>> Cc: Michal Simek <michal.simek at xilinx.com>
>>>> ---
>>>> Based on a small amount of inspection for the Zynq platform, enabling
>>>> this config option adds ~1KB of code size.
>>>>
>>>> Also on a side note, this might affect the socfpga target as it forcibly
>>>> overrides the #undef from config_uncmd_spl.h in its common header. I
>>>> have Cc'd the respective maintainer for this reason.
>>>
>>> The fix for SoCFPGA is easy -- enable the SPL_DM_SEQ_ALIAS in
>>> configs/socfpga*. It is needed for booting from QSPI NOR.
>>
>> That's probably not the best solution. But of course we can use it.
>> IRC Stefan had the same problem.
>
> So what is the solution ?

I added

#define CONFIG_DM_SEQ_ALIAS            1

to the common config header for MVEBU. If its possible to set this
via Kconfig in a way where its not #undef'ed by config_uncmd_spl.h,
that would be even better.

Thanks,
Stefan