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

Marek Vasut marex at denx.de
Wed Aug 29 03:17:45 CEST 2012


Dear Otavio Salvador,

> 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.

So, why dont you also align the default clockspeed of the spi flash attached to 
ssp2 in the config file within this patch?

Lemme answer myself after taking a look ... because that's already done.

Ok,

Acked-by: Marek Vasut <marex at denx.de>

> >> 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

Best regards,
Marek Vasut


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