[U-Boot] [PATCH v2 1/2] MX28: mx28evk: Align SSP clock speed

Otavio Salvador otavio at ossystems.com.br
Tue Aug 28 23:47:23 CEST 2012


On Tue, Aug 28, 2012 at 7:18 AM, Marek Vasut <marek.vasut at gmail.com> wrote:
> Dear Otavio Salvador,
>
>> Align the SSP clock speed with oscilator to achieve higher transfer
>> stability.
>
> This change is still pointless, unless you have user for this!

As far as I know the SPI flash uses SSP2; so it is a user of it.

>> Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
>> ---
>> Changes in v2:
>> - reword commit log to match the change description done on m28evk.
>>
>>  board/freescale/mx28evk/mx28evk.c |    4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/board/freescale/mx28evk/mx28evk.c
>> b/board/freescale/mx28evk/mx28evk.c index 867d3c8..d782aea 100644
>> --- a/board/freescale/mx28evk/mx28evk.c
>> +++ b/board/freescale/mx28evk/mx28evk.c
>> @@ -49,8 +49,8 @@ int board_early_init_f(void)
>>
>>       /* SSP0 clock at 96MHz */
>>       mx28_set_sspclk(MXC_SSPCLK0, 96000, 0);
>> -     /* SSP2 clock at 96MHz */
>> -     mx28_set_sspclk(MXC_SSPCLK2, 96000, 0);
>> +     /* SSP2 clock at 160MHz */
>> +     mx28_set_sspclk(MXC_SSPCLK2, 160000, 0);
>>
>>  #ifdef       CONFIG_CMD_USB
>>       mxs_iomux_setup_pad(MX28_PAD_SSP2_SS1__USB1_OVERCURRENT);
>
> Best regards,
> Marek Vasut



-- 
Otavio Salvador                             O.S. Systems
E-mail: otavio at ossystems.com.br  http://www.ossystems.com.br
Mobile: +55 53 9981-7854              http://projetos.ossystems.com.br


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