[U-Boot] [PATCH v2] at91: Add support for Bluewater Systems Snapper 9G45 module

Andre Renaud andre at bluewatersys.com
Tue Nov 1 21:38:39 CET 2011


Hi Simon,

On 02/11/11 04:22, Simon Glass wrote:
> +	/* Need to reset PHY -> 500ms reset */
> +	erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK;
> +	writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) |
> +	       AT91_RSTC_MR_URSTEN, &rstc->mr);
> +	writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr);

You don't actually need to reset the PHY for 500ms, only 100us, so the
AT91_RSTC_MR_ERSTL(13) can be replaced with AT91_RSTC_MR_ERSTL(0), which
give you the minimum delay (62ms I think).

Regards,
Andre

-- 
Bluewater Systems - An Aiotec Company

Andre Renaud        		
andre at bluewatersys.com          5 Amuri Park, 404 Barbadoes St
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