On 07/06/2010 03:57 PM, Mikhail Matusov wrote:
Gary,
What sort of initialization does your PHY need? Most PHY devices are
quite useful/happy just being taken out of reset and talking to them...
I need to switch the PHY to the RGMII mode. By default it is in the GMII
mode. It involves a few writes to the PHY registers. Are you saying that
I have to be doing this in the platform driver? I don't think it belongs
there, but that's actually how I am doing it now... For some reason I
can't get ethernet working on this card. I know that hardware is OK
because I have another OS running on it happily. I can't find anything
wrong except for one MAC register reporting wrong RGMII status. This
made me think that perhaps the PHY is initialized too late... However,
the register in question doesn't seem to behave properly under another
OS either...
I agree that initializing the PHY device itself does not belong
in the platform driver. However, as you noted, there is no API
for the PHY driver to be initialized at reset. Also, switching
the PHY device into GMII or RGMII mode would seem to be a platform
specific anyway.
I don't understand your last comment 'the register in question doesn't seem
to behave properly under another OS either...' - what does this mean?
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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