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authorRussell King <rmk+kernel@armlinux.org.uk>2020-12-09 11:22:54 +0000
committerDavid S. Miller <davem@davemloft.net>2020-12-09 19:38:10 -0800
commit7a77233ec6d114322e2c4f71b4e26dbecd9ea8a7 (patch)
treeeae267a9d4b2e668468b83b07a67dc30b10755ba /drivers/net/phy
parent0d035bed2a4a6c4878518749348be61bf082d12a (diff)
net: sfp: relax bitrate-derived mode check
Do not check the encoding when deriving 1000BASE-X from the bitrate when no other modes are discovered. Some GPON modules (VSOL V2801F and CarlitoxxPro CPGOS03-0490 v2.0) indicate NRZ encoding with a 1200Mbaud bitrate, but should be driven with 1000BASE-X on the host side. Tested-by: Pali Rohár <pali@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/sfp-bus.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index 58014feedf6c..20b91f5dfc6e 100644
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -334,14 +334,13 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
}
/* If we haven't discovered any modes that this module supports, try
- * the encoding and bitrate to determine supported modes. Some BiDi
- * modules (eg, 1310nm/1550nm) are not 1000BASE-BX compliant due to
- * the differing wavelengths, so do not set any transceiver bits.
+ * the bitrate to determine supported modes. Some BiDi modules (eg,
+ * 1310nm/1550nm) are not 1000BASE-BX compliant due to the differing
+ * wavelengths, so do not set any transceiver bits.
*/
if (bitmap_empty(modes, __ETHTOOL_LINK_MODE_MASK_NBITS)) {
- /* If the encoding and bit rate allows 1000baseX */
- if (id->base.encoding == SFF8024_ENCODING_8B10B && br_nom &&
- br_min <= 1300 && br_max >= 1200)
+ /* If the bit rate allows 1000baseX */
+ if (br_nom && br_min <= 1300 && br_max >= 1200)
phylink_set(modes, 1000baseX_Full);
}