[U-Boot] [PATCH 1/2] EXYNOS: Export timer_get_us() to get microsecond timer

Simon Glass sjg at chromium.org
Sat Mar 23 01:45:50 CET 2013


Hi Rajeshwari,

On Fri, Mar 22, 2013 at 5:28 AM, Rajeshwari Shinde
<rajeshwari.s at samsung.com> wrote:
> This function, if implemented by the board, provides a microsecond
> timer. The granularity may be larger than 1us if hardware does not
> support this.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Signed-off-by: Rajeshwari Shinde <rajeshwari.s at samsung.com>
> ---
>  include/common.h |    8 ++++++++
>  1 files changed, 8 insertions(+), 0 deletions(-)
>
> diff --git a/include/common.h b/include/common.h
> index 4ad17ea..0c21edc 100644
> --- a/include/common.h
> +++ b/include/common.h
> @@ -558,6 +558,14 @@ void ddr_enable_ecc(unsigned int dram_size);
>  #endif
>  #endif
>
> +#if defined CONFIG_EXYNOS5

I don't think we need the #ifdef. If some boards don't have then that is OK.

> +/*
> + * Return the current value of a monotonically increasing microsecond timer.
> + * Granularity may be larger than 1us if hardware does not support this.
> + */
> +ulong timer_get_us(void);
> +#endif
> +
>  /* $(CPU)/cpu.c */
>  static inline int cpumask_next(int cpu, unsigned int mask)
>  {
> --
> 1.7.4.4
>

Regards,
Simon


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