Hi Andrew,
On Tue, Apr 17, 2018 at 11:12 AM, Andrew Lunn <andrew@xxxxxxx> wrote:
On Tue, Apr 17, 2018 at 10:04:43AM +1200, Michael Schmitz wrote:
From: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
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 <kernel@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
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);
This should really be fixed in the PHY driver, not the MAC.
OK - do you want this separate, or as part of this series? Might have
a few side effects on more commonly used hardware, perhaps?
Cheers,
Michael
Andrew
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