[U-Boot] [PATCH v5 4/5] mips: ath79: add spi driver
Thomas Chou
thomas at wytron.com.tw
Tue Dec 29 14:00:27 CET 2015
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.
Best regards,
Thomas
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