| Date | Wed, 20 Nov 2013 17:15:25 -0500 (EST) | Subject | Re: [PATCH RFC v1 0/7] net: phy: Ethernet PHY powerdown optimization | From | David Miller <> |
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From: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Date: Wed, 20 Nov 2013 21:54:19 +0100
> Right, as far as I understand BMCR powerdown, i.e. what is called in > genphy_suspend/resume, powers down the PHY but _does_ retain PHY > config. > It is not resetting the device. > > I haven't checked a lot of datasheets but [1] notes that "registers > will > preserve their configuration". Even if we have PHYs that do not > preserve > it, they should have a device specific callback for suspend/resume > that > takes care of preserving it. > > [1] http://www.ti.com/lit/an/snoa463a/snoa463a.pdf
Thanks, that addresses my concerns.
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