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| author | Wong Vee Khee <vee.khee.wong@linux.intel.com> | 2021-10-05 11:45:21 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-10-05 13:10:24 +0100 |
| commit | e3cf002d5a4452f8adc5543df341cf96fd702fcf (patch) | |
| tree | a2c14c5c9bb546c0b3e959de7621fe3cf0f36ba0 /net | |
| parent | 25a9da6641f1f66006e93ddbefee13a437efa8c0 (diff) | |
| download | linux-stable-e3cf002d5a4452f8adc5543df341cf96fd702fcf.tar.gz linux-stable-e3cf002d5a4452f8adc5543df341cf96fd702fcf.tar.bz2 linux-stable-e3cf002d5a4452f8adc5543df341cf96fd702fcf.zip | |
net: pcs: xpcs: fix incorrect CL37 AN sequence
According to Synopsys DesignWare Cores Ethernet PCS databook, it is
required to disable Clause 37 auto-negotiation by programming bit-12
(AN_ENABLE) to 0 if it is already enabled, before programming various
fields of VR_MII_AN_CTRL registers.
After all these programming are done, it is then required to enable
Clause 37 auto-negotiation by programming bit-12 (AN_ENABLE) to 1.
Fixes: b97b5331b8ab ("net: pcs: add C37 SGMII AN support for intel mGbE controller")
Cc: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions