[U-Boot] [PATCH 1/2] imx: timer: don't clear the GPT control register multiple times

[Stefano Babic]

On 28/08/2017 17:46, Anatolij Gustschin wrote:
> There is no need to clear the control register 100 times in a
> loop, a single zero write clears the register. I didn't find any
> justification why clearing this register in a loop is needed
> (no info in i.MX6 errata or GPT timer linux driver, linux driver
> uses single write to clear this control register).
> 
> Signed-off-by: Anatolij Gustschin <agust at denx.de>
> ---
>  arch/arm/mach-imx/timer.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/arm/mach-imx/timer.c b/arch/arm/mach-imx/timer.c
> index 9b01114..69dbf3c 100644
> --- a/arch/arm/mach-imx/timer.c
> +++ b/arch/arm/mach-imx/timer.c
> @@ -74,8 +74,7 @@ int timer_init(void)
>  	__raw_writel(GPTCR_SWR, &cur_gpt->control);
>  
>  	/* We have no udelay by now */
> -	for (i = 0; i < 100; i++)
> -		__raw_writel(0, &cur_gpt->control);
> +	__raw_writel(0, &cur_gpt->control);
>  
>  	i = __raw_readl(&cur_gpt->control);
>  	i &= ~GPTCR_CLKSOURCE_MASK;
> 

Applied to u-boot-imx, -master, thanks !

Best regards,
Stefano Babic

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