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authorVladimir Oltean <vladimir.oltean@nxp.com>2021-06-11 23:05:25 +0300
committerDavid S. Miller <davem@davemloft.net>2021-06-11 23:43:56 +0300
commitdd0721ea4c7a6c2ec8b309ff57d74d88f08d4c23 (patch)
tree1b71de6869d88e0bd1ddfdebb0465ade16890b3b /MAINTAINERS
parent36641b045c839797739f9863e86e4dae2370e24f (diff)
downloadlinux-dd0721ea4c7a6c2ec8b309ff57d74d88f08d4c23.tar.xz
net: pcs: xpcs: add support for NXP SJA1105
The NXP SJA1105 DSA switch integrates a Synopsys SGMII XPCS on port 4. The generic code works fine, except there is an integration issue which needs to be dealt with: in this switch, the XPCS is integrated with a PMA that has the TX lane polarity inverted by default (PLUS is MINUS, MINUS is PLUS). To obtain normal non-inverted behavior, the TX lane polarity must be inverted in the PCS, via the DIGITAL_CONTROL_2 register. We introduce a pma_config() method in xpcs_compat which is called by the phylink_pcs_config() implementation. Also, the NXP SJA1105 returns all zeroes in the PHY ID registers 2 and 3. We need to hack up an ad-hoc PHY ID (OUI is zero, device ID is 1) in order for the XPCS driver to recognize it. This PHY ID is added to the public include/linux/pcs/pcs-xpcs.h for that reason (for the sja1105 driver to be able to use it in a later patch). Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'MAINTAINERS')
-rw-r--r--MAINTAINERS1
1 files changed, 1 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index c8214235380e..349a87b42d3c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13203,6 +13203,7 @@ M: Vladimir Oltean <olteanv@gmail.com>
L: linux-kernel@vger.kernel.org
S: Maintained
F: drivers/net/dsa/sja1105
+F: drivers/net/pcs/pcs-xpcs-nxp.c
NXP TDA998X DRM DRIVER
M: Russell King <linux@armlinux.org.uk>