From: Andre Renaud <andre@bluewatersys.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2] at91: Add support for Bluewater Systems Snapper 9G45 module
Date: Wed, 02 Nov 2011 09:38:39 +1300 [thread overview]
Message-ID: <4EB058CF.6030609@bluewatersys.com> (raw)
In-Reply-To: <1320160968-3954-1-git-send-email-sglass@bluewatersys.com>
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
Phone: +64 3 3779127 Freecall: Australia 1800 148 751
Fax: +64 3 3779135 USA 1800 261 2934
next prev parent reply other threads:[~2011-11-01 20:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-23 3:09 [U-Boot] [PATCH] at91: Add support for Bluewater Systems Snapper 9G45 module Simon Glass
2011-10-23 3:57 ` Reinhard Meyer
2011-11-01 14:44 ` Simon Glass
2011-11-01 15:22 ` [U-Boot] [PATCH v2] " Simon Glass
2011-11-01 20:38 ` Andre Renaud [this message]
2011-11-02 9:32 ` Igor Grinberg
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