Re: [PATCH 1/1] pmdomain: renesas: Adjust the waiting time to cover the worst case

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Hi

Sorry to bother you, but it seems original author mail address
was updated. I will post v2 patch.

> From: Dien Pham <dien.pham.ry@xxxxxxxxxxxxxxx>
> 
> Description in HWM rev0.51E, 9.4 Usage notes, page 455 tells
> 
> 	"It takes several hundreds of microseconds to shutting off and
> 	 resuming power domain. Because actual time required for
> 	 shutting off and resuming depends on the status of on-board
> 	 power line, shutoff/resume time is not guaranteed by
> 	 electrical specification"
> 
> Let's assume the safe value of waiting is about 1000us.
> 
> Signed-off-by: Dien Pham <dien.pham.ry@xxxxxxxxxxxxxxx>
> Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
> Signed-off-by: Tho Vu <tho.vu.wh@xxxxxxxxxxx>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
> ---
>  drivers/pmdomain/renesas/rcar-sysc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pmdomain/renesas/rcar-sysc.c b/drivers/pmdomain/renesas/rcar-sysc.c
> index eed47696e825..35d9aa0dfab8 100644
> --- a/drivers/pmdomain/renesas/rcar-sysc.c
> +++ b/drivers/pmdomain/renesas/rcar-sysc.c
> @@ -45,10 +45,10 @@
>  #define PWRER_OFFS		0x14	/* Power Shutoff/Resume Error */
>  
>  
> -#define SYSCSR_TIMEOUT		100
> +#define SYSCSR_TIMEOUT		1000
>  #define SYSCSR_DELAY_US		1
>  
> -#define PWRER_RETRIES		100
> +#define PWRER_RETRIES		1000
>  #define PWRER_DELAY_US		1
>  
>  #define SYSCISR_TIMEOUT		1000
> -- 
> 2.25.1
> 




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