On Tue, Apr 17, 2018 at 10:04:43AM +1200, Michael Schmitz wrote:
> From: John Paul Adrian Glaubitz <glaub...@physik.fu-berlin.de>
>
> The AX88796B as installed on the X-Surf-100 does not recognize a MII reset
> request if the previous write to the MII control register also was a reset
> request. So a dummy write to the control register makes the soft reset in
> the PHY initialization code work.
>
> Signed-off-by: Michael Karcher <ker...@mkarcher.dialup.fu-berlin.de>
> ---
> drivers/net/ethernet/8390/ax88796.c | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/net/ethernet/8390/ax88796.c
> b/drivers/net/ethernet/8390/ax88796.c
> index 6af9aca..a2f9a09 100644
> --- a/drivers/net/ethernet/8390/ax88796.c
> +++ b/drivers/net/ethernet/8390/ax88796.c
> @@ -374,6 +374,10 @@ static int ax_mii_probe(struct net_device *dev)
> return -ENODEV;
> }
>
> + /* write a non-reset pattern to the control register to
> + * re-arm the reset request detection logic (needed on AX88796B)
> + */
> + phy_write(phy_dev, MII_BMCR, 0);
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This should really be fixed in the PHY driver, not the MAC.
Andrew
