target/linux/generic/backport-5.10/711-v5.12-sfp-add-support-for-100-base-x-SFPs.patch

   1 From 6e12f35cef6b8a458d7ecf507ae330e0bffaad8c Mon Sep 17 00:00:00 2001
   2 From: Bjarni Jonasson <bjarni.jonasson@microchip.com>
   3 Date: Wed, 13 Jan 2021 12:56:26 +0100
   4 Subject: [PATCH] sfp: add support for 100 base-x SFPs
   5
   6 Add support for 100Base-FX, 100Base-LX, 100Base-PX and 100Base-BX10 modules
   7 This is needed for Sparx-5 switch.
   8
   9 Signed-off-by: Bjarni Jonasson <bjarni.jonasson@microchip.com>
  10 Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
  11 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  12 ---
  13  drivers/net/phy/sfp-bus.c | 9 +++++++++
  14  1 file changed, 9 insertions(+)
  15
  16 --- a/drivers/net/phy/sfp-bus.c
  17 +++ b/drivers/net/phy/sfp-bus.c
  18 @@ -286,6 +286,12 @@ void sfp_parse_support(struct sfp_bus *b
  19             br_min <= 1300 && br_max >= 1200)
  20                 phylink_set(modes, 1000baseX_Full);
  21
  22 +       /* 100Base-FX, 100Base-LX, 100Base-PX, 100Base-BX10 */
  23 +       if (id->base.e100_base_fx || id->base.e100_base_lx)
  24 +               phylink_set(modes, 100baseFX_Full);
  25 +       if ((id->base.e_base_px || id->base.e_base_bx10) && br_nom == 100)
  26 +               phylink_set(modes, 100baseFX_Full);
  27 +
  28         /* For active or passive cables, select the link modes
  29          * based on the bit rates and the cable compliance bytes.
  30          */
  31 @@ -405,6 +411,9 @@ phy_interface_t sfp_select_interface(str
  32         if (phylink_test(link_modes, 1000baseX_Full))
  33                 return PHY_INTERFACE_MODE_1000BASEX;
  34
  35 +       if (phylink_test(link_modes, 100baseFX_Full))
  36 +               return PHY_INTERFACE_MODE_100BASEX;
  37 +
  38         dev_warn(bus->sfp_dev, "Unable to ascertain link mode\n");
  39
  40         return PHY_INTERFACE_MODE_NA;