From: Laurence Withers <lwithers@guralp.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/4] da830: emac: add support for RMII
Date: Mon, 3 Oct 2011 14:07:03 +0000 [thread overview]
Message-ID: <20111003140703.GE15470@lwithers.me.uk> (raw)
In-Reply-To: <201109301148.14676.vapier@gentoo.org>
On Fri, Sep 30, 2011 at 11:48:13AM -0400, Mike Frysinger wrote:
> On Friday, September 30, 2011 07:57:10 nagabhushana.netagunte at ti.com wrote:
> > --- a/drivers/net/davinci_emac.c
> > +++ b/drivers/net/davinci_emac.c
> > @@ -246,7 +246,7 @@ static int gen_get_link_speed(int phy_addr)
> > if (davinci_eth_phy_read(phy_addr, MII_STATUS_REG, &tmp) &&
> > (tmp & 0x04)) {
> > #if defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \
>
> there's a common CONFIG_RMII symbol already ...
>
> > - defined(CONFIG_MACH_DAVINCI_DA850_EVM)
> > + defined(CONFIG_MACH_DAVINCI_DA8XX_EVM)
>
> maybe it's just me, but board level defines in an emac driver make no sense
This led me to look a bit more closely at this code, and I think there is
something wrong with it. Under Linux, I am able to run in RMII mode at either
10BASE-T or 100BASE-TX, either by forcing it on the board with ethtool or by
forcing it on the managed switch.
However, the driver in U-Boot fails to work with 10BASE-T altogether. A
simple change to #if defined(CONFIG_SOC_DA8XX) doesn't seem to resolve the
situation so it would appear there are some bugs in the TI EMAC driver. I
also note it doesn't reset the PHY properly as if I reboot from Linux with
the PHY forced to 10BASE-T then U-Boot is no longer able to get the link up.
Bye for now,
--
Laurence Withers, <lwithers@guralp.com> http://www.guralp.com/
Direct tel:+447753988197 or tel:+443333408643 Software Engineer
General support queries: <support@guralp.com> CMG-DCM CMG-EAM CMG-NAM
next prev parent reply other threads:[~2011-10-03 14:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-30 11:57 [U-Boot] [PATCH 0/4] davinci: addition of emac features nagabhushana.netagunte at ti.com
2011-09-30 11:57 ` [U-Boot] [PATCH 1/4] davinci: emac: add new features to autonegotiate for EMAC nagabhushana.netagunte at ti.com
2011-09-30 21:07 ` Laurence Withers
2011-10-04 13:53 ` Netagunte, Nagabhushana
2011-10-11 7:00 ` Hadli, Manjunath
2011-09-30 11:57 ` [U-Boot] [PATCH 2/4] da830: emac: add support for RMII nagabhushana.netagunte at ti.com
2011-09-30 15:48 ` Mike Frysinger
2011-10-02 8:38 ` Igor Grinberg
2011-10-03 14:07 ` Laurence Withers [this message]
2011-09-30 11:57 ` [U-Boot] [PATCH 3/4] davinci: emac: add support for more than 1 PHYs nagabhushana.netagunte at ti.com
2011-09-30 20:29 ` Laurence Withers
2011-10-11 6:57 ` Hadli, Manjunath
2011-10-06 21:16 ` Wolfgang Denk
2011-09-30 11:57 ` [U-Boot] [PATCH 4/4] davinci: remove obsolete macro CONFIG_EMAC_MDIO_PHY_NUM nagabhushana.netagunte at ti.com
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20111003140703.GE15470@lwithers.me.uk \
--to=lwithers@guralp.com \
--cc=u-boot@lists.denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.