[U-Boot] [PATCH] kmp204x: set the ZL clk chips reset to power up only

York Sun yorksun at freescale.com
Tue Aug 12 19:54:44 CEST 2014


On 07/17/2014 05:22 AM, Valentin Longchamp wrote:
> There is the requirement on the chassis's backplane that when the clocks
> are enabled, they should not disappear. Resetting theses chips at unit

I guess here "they" means the "clocks".

> reset also has the side effect that their clocks disappear.

What does "their" point to? Whose clocks?

> 
> To avoid this side effect, both the ZL chips are reset only in the event
> of a power cycle.
> 

Do you mean "power up" here?

I suggest you rephrase your commit message. It sounds twisting.

> Signed-off-by: Valentin Longchamp <valentin.longchamp at keymile.com>
> ---
> 
>  board/keymile/kmp204x/kmp204x.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/board/keymile/kmp204x/kmp204x.c b/board/keymile/kmp204x/kmp204x.c
> index 6bc8eb8..638b2a3 100644
> --- a/board/keymile/kmp204x/kmp204x.c
> +++ b/board/keymile/kmp204x/kmp204x.c
> @@ -94,7 +94,7 @@ int board_early_init_f(void)
>  	qrio_wdmask(BFTIC4_RST, true);
>  
>  	/* set the ZL30138's prstcfg to reset at power-up and unit reset only */
> -	qrio_prstcfg(ZL30158_RST, PRSTCFG_POWUP_UNIT_RST);
> +	qrio_prstcfg(ZL30158_RST, PRSTCFG_POWUP_RST);
>  	/* and take it out of reset as soon as possible (needed for Hooper) */
>  	qrio_prst(ZL30158_RST, false, false);
>  
> @@ -144,7 +144,7 @@ int misc_init_f(void)
>  	qrio_prst(ETH_FRONT_PHY_RST, false, false);
>  
>  	/* set the ZL30343 prstcfg to reset at power-up and unit reset only */
> -	qrio_prstcfg(ZL30343_RST, PRSTCFG_POWUP_UNIT_RST);
> +	qrio_prstcfg(ZL30343_RST, PRSTCFG_POWUP_RST);
>  	/* and enable the WD on it */
>  	qrio_wdmask(ZL30343_RST, true);

You changed the macros here but not the comments.

York



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