[U-Boot] [PATCH v2 3/4] mmc: omap_hsmmc: make it possible to compile out ADMA support

[Jean-Jacques Hiblot]

On 23/02/2018 13:21, Tom Rini wrote:
> On Fri, Feb 23, 2018 at 10:40:18AM +0100, Jean-Jacques Hiblot wrote:
>> Some platforms don't have ADMA controllers. For those platforms, compiling
>> it out reduces the size of the binary by about 600 bytes.
>> Leaving the support in doesn't break things as the driver checks at runtime
>> if the ADMA2 controller is present.
>>
>> Signed-off-by: Jean-Jacques Hiblot <jjhiblot at ti.com>
>>
>> ---
>>
>> Changes in v2:
>> - Use a Kconfig option to compile out the ADMA support instead of relying
>>    on the platform architecture
>>
>>   drivers/mmc/Kconfig      |  9 +++++++++
>>   drivers/mmc/omap_hsmmc.c | 12 ++++++------
>>   2 files changed, 15 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
>> index f2d8256..88a1359 100644
>> --- a/drivers/mmc/Kconfig
>> +++ b/drivers/mmc/Kconfig
>> @@ -239,6 +239,15 @@ config MMC_OMAP_HS
>>   
>>   	  If unsure, say N.
>>   
>> +config MMC_OMAP_HS_ADMA
>> +	bool "ADMA support for OMAP HS MMC"
>> +	depends on MMC_OMAP_HS && !OMAP34XX
>> +	default y if !AM33XX
> Is this logic really the right restrictions?  Does it work on some
> AM33XX platforms (AM43xx?) and just never OMAP34XX?  Thanks!
Starting with platform am33xx there is a way to check if the ADMA 
controller is present or not by reading a register. This register is not 
available in OMAP34XX.
That being said I don't think that ADMA is available on any variant of 
am33xx.

JJ
>