On Tuesday, December 29, 2015 at 02:00:27 PM, Thomas Chou wrote:
> Hi Wills,
>
> On 2015年12月29日 19:17, Wills Wang wrote:
> > diff --git a/arch/mips/mach-ath79/Kconfig b/arch/mips/mach-ath79/Kconfig
> > index 1d92a5b..b5668e9 100644
> > --- a/arch/mips/mach-ath79/Kconfig
> > +++ b/arch/mips/mach-ath79/Kconfig
> > @@ -15,6 +15,7 @@ config SOC_AR933X
> >
> > select SYS_MIPS_CACHE_INIT_RAM_LOAD
> > select MIPS_TUNE_24KC
> > select AR933X_UART
> >
> > + select ATH79_SPI
>
> Both AR933X_UART and ATH79_SPI should not be selected with mach Kconfig.
> They should go with board defconfig.
>
> > diff --git a/drivers/spi/ath79_spi.c b/drivers/spi/ath79_spi.c
> >
> > +static inline void ath79_spi_delay(int max_hz)
> > +{
> > + uint64_t tick = get_tbclk();
> > +
> > + do_div(tick, max_hz);
> > + tick = get_ticks() + tick + 1; /* get current timestamp */
> > + while (get_ticks() < tick) /* loop till event */
> > + /*NOP*/;
> > +}
>
> Use udelay() instead.
You mean get_timer() based delay loop, yes ?
Best regards,
Marek Vasut
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