I noticed the latest BSP from Freescale has this patch: From: Chen Hongjun <hong-jun.c...@freecale.com> Date: Thu, 16 Apr 2009 20:22:52 +0800 Subject: [PATCH] Fixed FEC bug for bluestone board.
Signed-off-by: Chen Hongjun <hong-jun.c...@freecale.com> --- drivers/net/fs_enet/mii-fec.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/net/fs_enet/mii-fec.c b/drivers/net/fs_enet/mii-fec.c index 13a7d66..53d01a8 100644 --- a/drivers/net/fs_enet/mii-fec.c +++ b/drivers/net/fs_enet/mii-fec.c @@ -208,7 +208,7 @@ static int __devinit fs_enet_mdio_probe(struct of_device *ofdev, if (!fec->fecp) goto out_fec; - fec->mii_speed = ((ppc_proc_freq + 4999999) / 5000000) << 1; + fec->mii_speed = ((((ppc_proc_freq + 4999999) / 2500000) / 2) & 0x3F) << 1; setbits32(&fec->fecp->fec_r_cntrl, FEC_RCNTRL_MII_MODE); setbits32(&fec->fecp->fec_ecntrl, FEC_ECNTRL_PINMUX | -- 1.5.4 On Sat, Jun 6, 2009 at 4:16 PM, Wolfgang Denk <w...@denx.de> wrote: > Dear John, > > In message <4b73d43f0905071909v6e6e8b2el9eb6d4a1b9038...@mail.gmail.com> > you wrote: > > > > I think the fec's parent clock is the ipb clock not the ppc core clock. > > Could that be the problem? > > I don't think so. > > When debugging, I printed the actual clock frequencies, and they > looked as expected. And "arch/powerpc/platforms/512x/clock.c" has > this: > > 385 static struct clk fec_clk = { > 386 .name = "fec_clk", > 387 .flags = CLK_HAS_CTRL, > 388 .reg = 0, > 389 .bit = 13, > 390 .calc = unity_clk_calc, > 391 .parent = &ips_clk, > 392 }; > > which looks OK to me. > > Best regards, > > Wolfgang Denk > > -- > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de > The human mind ordinarily operates at only ten percent of its > capacity. The rest is overhead for the operating system. >
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