[U-Boot] [PATCH v5 1/5] spi: cadence_qspi: move trigger base configuration in init

Vikas MANOCHA vikas.manocha at st.com
Thu Aug 27 17:46:12 CEST 2015


Hi,

> -----Original Message-----
> From: Marek Vasut [mailto:marex at denx.de]
> Sent: Thursday, August 27, 2015 1:36 AM
> To: Vikas MANOCHA
> Cc: u-boot at lists.denx.de; sr at denx.de; grmoore at opensource.altera.com;
> jteki at openedev.com
> Subject: Re: [PATCH v5 1/5] spi: cadence_qspi: move trigger base
> configuration in init
> 
> On Thursday, August 27, 2015 at 12:44:26 AM, Vikas Manocha wrote:
> > No need to configure indirect trigger address for every read/write.
> >
> > Signed-off-by: Vikas Manocha <vikas.manocha at st.com>
> > ---
> >
> > Changes in v5: fixed type cast compilation warnings.
> > Changes in v4: removed extra type casts.
> > Changes in v3: added commit message & removed extra bracket.
> > Changes in v2: Rebased to master
> >
> >  drivers/spi/cadence_qspi_apb.c |    9 ++-------
> >  1 file changed, 2 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/spi/cadence_qspi_apb.c
> > b/drivers/spi/cadence_qspi_apb.c index d053407..d377ad1 100644
> > --- a/drivers/spi/cadence_qspi_apb.c
> > +++ b/drivers/spi/cadence_qspi_apb.c
> > @@ -534,6 +534,8 @@ void cadence_qspi_apb_controller_init(struct
> > cadence_spi_platdata *plat)
> >
> >  	/* Indirect mode configurations */
> >  	writel((plat->sram_size/2), plat->regbase +
> > CQSPI_REG_SRAMPARTITION);
> > +	writel((u32)plat->ahbbase &
> CQSPI_INDIRECTTRIGGER_ADDR_MASK,
> 
> Why can't you just drop this masking and the cast ?

Masking is dropped in another patch in same series.
Casting is required as ahbbase is a pointer.

> 
> > +	       plat->regbase + CQSPI_REG_INDIRECTTRIGGER);
> >
> >  	/* Disable all interrupts */
> >  	writel(0, plat->regbase + CQSPI_REG_IRQMASK);
> 
> [...]
> 
> Best regards,
> Marek Vasut


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