[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
www.bluewatersys.com PO Box 13 889, Christchurch 8013
www.aiotec.co.nz New Zealand
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