Re: [PATCHv2 0/2] net: fec: Reset ethernet PHY whenever the enet_out clock is being enabled

From: Russell King - ARM Linux
Date: Tue Jan 12 2016 - 10:24:45 EST

On Tue, Jan 12, 2016 at 04:17:54PM +0100, Lothar Waßmann wrote:
> This patchset fixes a regression introduced by
> commit e8fcfcd5684a ("net: fec: optimize the clock management to save power")
> for ethernet PHYs that are using ENET_OUT as reference clock (on i.MX6 or i.MX28)
> Changes vs. v1:
> - fixed reference to the commit that introduced the regression.
> - dropped patch to use gpiod framework. This should be added later,
> after the affected DTBs have been updated to specify the correct
> gpio_flags.
> Patch overview:
> 1. cleanup patch to remove redundant NULL checks
> 2. call fec_reset_phy() after the ENET_OUT clock has been enabled

I definitely want to test these on my SolidRun boards before these get
merged: the AR8035 on there is configured via pin-straps, and then
further tweaked with PHY quirks. Resetting with the iMX6 in the
wrong state may result in the AR8035 being reconfigured (even jumping
to a different MDIO address) and certainly would need the PHY quirks

RMK's Patch system:
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to