(cc'ing Ranjith)
Hi
On Fri, 16 Dec 2011, Ilya Yanok wrote:
> >>>>> + clk_add_alias(NULL, dev_name(&am35xx_emac_device.dev),
> >>>>> + "emac_clk", &am35xx_emac_device.dev);
> >>>>> + clk_add_alias(NULL, dev_name(&am35xx_mdio_device.dev),
> >>>>> + "phy_clk", &am35xx_emac_device.dev);
> >>>>
> >>>> Hmm after moving the code and should be a separate patch, don't
> >>>> we already have these clock aliases in cloc3xxx_data.c?
> >>>
> >>> No, we have
> >>> CLK("davinci_emac", "emac_clk"...) and
> >>> CLK("davinci_emac", "phy_clk"...)
> >>> while drivers want ("davinci_emac", NULL) and ("davinci_mdio", NULL).
> >>>
> >>> Probably we have to fix the clock definitions instead of adding the
> >>> aliases.
> >>>
> >>> So, should I post this as a separate patch?
> >>
> >> If it comes to that question, Cc Paul...
> >
> > Yes please do that as a separate patch.
>
> Ok, let's wait for Paul's answer and then I'll prepare a separate patch.
Unfortunately the AM3517 TRM (SPRUGR0) here doesn't really have the same
level of clock integration information that the WBU TRMs have, so it's
kind of hard to tell what's going on :-(
Looking at Figure 22-1 "EMAC and MDIO Block Diagram", it appears that what
we call "emac_fck" is really just an optional functional clock for the
MDIO PHY?
And it sounds like the AM35xx clock that we call "emac_ick" is actually a
combined interface and functional clock for the EMAC and MDIO IP blocks?
I guess a combined interface/functional clock would make sense, since the
EMAC seems to contain a DMA controller.
Maybe Ranjith can provide some more information; he's cc'ed.
In any case, your changes sound reasonable to me, so a patch to the clock
file sounds good. I'd suggest both changing the clkdev aliases and
renaming emac_fck - that's a confusing name and I don't think it's in the
TRM as such.
- Paul
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