From 1887023a5e96f98249574e0785b7aa2e5742ca68 Mon Sep 17 00:00:00 2001 From: Robert Hancock Date: Wed, 28 Oct 2020 11:15:40 -0600 Subject: net: phy: marvell: add special handling of Finisar modules with 88E1111 The Finisar FCLF8520P2BTL 1000BaseT SFP module uses a Marvel 88E1111 PHY with a modified PHY ID. Add support for this ID using the 88E1111 methods. By default these modules do not have 1000BaseX auto-negotiation enabled, which is not generally desirable with Linux networking drivers. Add handling to enable 1000BaseX auto-negotiation when these modules are used in 1000BaseX mode. Also, some special handling is required to ensure that 1000BaseT auto-negotiation is enabled properly when desired. Based on existing handling in the AMD xgbe driver and the information in the Finisar FAQ: https://www.finisar.com/sites/default/files/resources/an-2036_1000base-t_sfp_faqreve1.pdf Signed-off-by: Robert Hancock Reviewed-by: Russell King Link: https://lore.kernel.org/r/20201028171540.1700032-1-robert.hancock@calian.com Signed-off-by: Jakub Kicinski --- include/linux/marvell_phy.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/marvell_phy.h b/include/linux/marvell_phy.h index ff7b7607c8cf..52b1610eae68 100644 --- a/include/linux/marvell_phy.h +++ b/include/linux/marvell_phy.h @@ -25,6 +25,9 @@ #define MARVELL_PHY_ID_88X3310 0x002b09a0 #define MARVELL_PHY_ID_88E2110 0x002b09b0 +/* Marvel 88E1111 in Finisar SFP module with modified PHY ID */ +#define MARVELL_PHY_ID_88E1111_FINISAR 0x01ff0cc0 + /* The MV88e6390 Ethernet switch contains embedded PHYs. These PHYs do * not have a model ID. So the switch driver traps reads to the ID2 * register and returns the switch family ID -- cgit v1.2.3