target/linux/generic/backport-5.4/743-v5.5-net-sfp-add-some-quirks-for-GPON-modules.patch

   1 From ecaa542cfed078dbc356dadff0bad4b6a8e704a0 Mon Sep 17 00:00:00 2001
   2 From: Russell King <rmk+kernel@armlinux.org.uk>
   3 Date: Fri, 17 May 2019 10:14:45 +0100
   4 Subject: [PATCH 641/660] net: sfp: add some quirks for GPON modules
   5
   6 Marc Micalizzi reports that Huawei MA5671A and Alcatel/Lucent G-010S-P
   7 modules are capable of 2500base-X, but incorrectly report their
   8 capabilities in the EEPROM.  It seems rather common that GPON modules
   9 mis-report.
  10
  11 Let's fix these modules by adding some quirks.
  12
  13 Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
  14 ---
  15  drivers/net/phy/sfp-bus.c | 25 +++++++++++++++++++++++++
  16  1 file changed, 25 insertions(+)
  17
  18 --- a/drivers/net/phy/sfp-bus.c
  19 +++ b/drivers/net/phy/sfp-bus.c
  20 @@ -38,7 +38,32 @@ struct sfp_bus {
  21         bool started;
  22  };
  23
  24 +static void sfp_quirk_2500basex(const struct sfp_eeprom_id *id,
  25 +                               unsigned long *modes)
  26 +{
  27 +       phylink_set(modes, 2500baseX_Full);
  28 +}
  29 +
  30  static const struct sfp_quirk sfp_quirks[] = {
  31 +       {
  32 +               // Alcatel Lucent G-010S-P can operate at 2500base-X, but
  33 +               // incorrectly report 2500MBd NRZ in their EEPROM
  34 +               .vendor = "ALCATELLUCENT",
  35 +               .part = "G010SP",
  36 +               .modes = sfp_quirk_2500basex,
  37 +       }, {
  38 +               // Alcatel Lucent G-010S-A can operate at 2500base-X, but
  39 +               // report 3.2GBd NRZ in their EEPROM
  40 +               .vendor = "ALCATELLUCENT",
  41 +               .part = "3FE46541AA",
  42 +               .modes = sfp_quirk_2500basex,
  43 +       }, {
  44 +               // Huawei MA5671A can operate at 2500base-X, but report 1.2GBd
  45 +               // NRZ in their EEPROM
  46 +               .vendor = "HUAWEI",
  47 +               .part = "MA5671A",
  48 +               .modes = sfp_quirk_2500basex,
  49 +       },
  50  };
  51
  52  static size_t sfp_strlen(const char *str, size_t maxlen)