[U-Boot] [PATCH 08/12] ARM: socfpga: use "select" instead of default value in defconfig

[Simon Glass]

On 7 April 2015 at 20:49, Simon Glass <sjg at chromium.org> wrote:
> On 7 April 2015 at 20:46, Simon Glass <sjg at chromium.org> wrote:
>> Hi Masahiro,
>>
>> On 5 April 2015 at 21:22, Masahiro Yamada <yamada.masahiro at socionext.com> wrote:
>>> Hi Pavel,
>>>
>>>
>>> 2015-04-02 21:47 GMT+09:00 Pavel Machek <pavel at denx.de>:
>>>> Hi!
>>>>
>>>>> >> Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>
>>>>> >> ---
>>>>> >>
>>>>> >>  arch/arm/Kconfig                   | 6 ++++++
>>>>> >>  configs/socfpga_arria5_defconfig   | 3 ---
>>>>> >>  configs/socfpga_cyclone5_defconfig | 3 ---
>>>>> >>  configs/socfpga_socrates_defconfig | 3 ---
>>>>> >>  4 files changed, 6 insertions(+), 9 deletions(-)
>>>>> >>
>>>>> >> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
>>>>> >> index b25a4a9..6ae48c6 100644
>>>>> >> --- a/arch/arm/Kconfig
>>>>> >> +++ b/arch/arm/Kconfig
>>>>> >> @@ -618,11 +618,17 @@ config TARGET_SOCFPGA_ARRIA5
>>>>> >>       bool "Support socfpga_arria5"
>>>>> >>       select CPU_V7
>>>>> >>       select SUPPORT_SPL
>>>>> >> +     select DM
>>>>> >> +     select DM_SPI_FLASH
>>>>> >> +     select DM_SPI
>>>>
>>>>> > Are you sure?
>>>>>
>>>>> Yes, I'm sure.
>>>>>
>>>>> > config DM_SPI_FLASH
>>>>> >         bool "Enable Driver Model for SPI flash"
>>>>> >         depends on DM && SPI
>>>>> >                 help
>>>>> >
>>>>> > DM_SPI_FLASH depends on SPI, you can't just select it...
>>>>> >
>>>>>
>>>>>
>>>>> This dependency is wrong.
>>>>> Before this patch, it must be fixed.
>>>>>
>>>>> Please see 01/12 of this series:
>>>>> http://patchwork.ozlabs.org/patch/456458/
>>>>
>>>> But I'm not sure.
>>>>
>>>> With this, you made CONFIG_DM_SPI_FLASH mandatory... even for users
>>>> that have no SPI flash. There must be better solution...?
>>>
>>> In my opinion,
>>>
>>> CONFIG_DM_* should be user-unconfigurable.
>>>
>>> CONFIG_DM_* should not enable/disable a feature,
>>> but should define how it is implemented.
>>>
>>> For example,
>>>
>>>
>>> !defined(CONFIG_SPI)   --> SPI is disabled
>>>
>>> defined(CONFIG_SPI) && defined(CONFIG_DM_SPI)  --> Driver Model SPI is enabled
>>>
>>> defined(CONFIG_SPI) && !defined(CONFIG_DM_SPI) --> ad-hoc SPI is enabled
>>>
>>>
>>> Likewise, I think CONFIG_SPI_FLASH should decide if the system has SPI flash.
>>
>> This sounds right to me. In fact it is important, since we want to
>> remove the CONFIG_DM options eventually. There are only there as a
>> migration aid.
>
> Acked-by: Simon Glass <sjg at chromium.org>

Applied to u-boot-dm/next, thanks!